Breast and Ovarian Cancer Essay - 1226 Words

Persuasive Speech Title: Breast and Ovarian Cancer Purpose Statement: This speech has a primary goal of educating the audience and to give a better understanding of what breast cancer is and how it can be treated with detection by a vast variety of methods. It will also give better understanding that not only women but men also are susceptible to breast cancer. Introduction I. Attention: There are a number of researches done about breast and ovarian cancer. Breast cancer is the second largest cause of death in women. Ovarian cancer is the fourth largest cause of death in women, but there isn’t a lot of attention brought to the public by the media. There needs to be more awareness about these types of cancers for better†¦show more content†¦D. Approximately less than 1% of breast cancer occurs in men. [Transition: Now that we have talked about what breast cancer is, let’s talk about what age it could develop.] II. What age is breast and ovarian cancer usually developed? A. The average age for breast cancer is over 50 and the average age for ovarian cancer is 65 or older. B. If you have a strong history of these cancers in your family there is a chance that you could test positive for a genetic mutation gene. 1. A genetic mutation gene is a gene that is passed from family member to family member; There are two types of these genes and one is called BRACA Braca 1 is a mutation for breast cancer, which brings the percentage to a higher rate of getting the disease and getting it at a much younger age for men and women. 2. The other gene is called BRACA 2. Braca 2 is a mutation for breast and ovarian cancer, which means not only is there higher risk of getting breast cancer but ovarian cancer also at a much younger age and for men this gene presents its self in the form of breast cancer and prostate cancer. [Transition: Now that we know the age cancer could develop let’s talk about prevention.] III. What are the preventions for breast and ovarian cancers? A. The first prevention you can do is communication; Talking to your family and children lets them know what the family history is and what to be awareShow MoreRelatedBreast Cancer : Ovarian Cancer1359 Words   |  6 PagesOvarian cancer occurs in the ovaries but is hard to detect when the cancer is still in the first stage. There are many ways of treatment to cure ovarian cancer but is also costly. AJ is a young women who have ovarian cancer. She will undergo tests if she is positive for ovarian cancer. Survival rate are high so AJ might have a chance to be a survivor of ovarian cancer just like her mom. In this case will showing how a young girl found out that she have ovarian cancer and the treatments that sheRead MoreThe Effect Of Breastfeeding On Ovarian And Breast Cancer Risks1298 Words   |  6 Pages The research that has been done in this area offers strong evidence that human milk feeding decreases the severity and incidence of a vast range of infectious diseases (Garner 1997). There are many benefits of breastfeeding reduces the ovarian and breast cancer risks and a reduction in other types of systemic health such as obesity, overweight, asthma and morbidity. In this way breastfeeding also becomes one of the main causes of benefits for the mothers (Horta 2013). In their report, WHO also recommendsRead MoreOvarian Cancer : Cancer And Cancer1577 Words   |  7 PagesOvarian cancer is also one of the cancer that is affecting millions of women in today’s world. The previous researches were claiming that ovarian cancer comes from ovary cells. However, studies have found that ovarian cancer could be coming from fallopian tube. Dr. Burdette’s lab researched how fallopian tube can be contributing to ovarian cancer, and her research shows strong evidence of how does it occurs. It is very important to find a cure for ovarian cancer, otherwise deaths due to ovarian cancerRead MoreOvarian Cancer1201 Words   |  5 PagesBRCA gene may also predict drug resistance in ovarian cancers BRCA 1 and BRCA 2 are gene mutations long associated with high risk for breast and ovarian cancer. Now, researchers at the University of Pennsylvania have found new evidence that it might also predict treatment resistance in ovarian cancers. Why do we care about resistant ovarian tumors? Breast cancer and ovarian cancer are both very serious and devastating diseases. The National Cancer Institute estimates that more than 250 thousandRead MoreCase Study : Driftwood Essay1053 Words   |  5 Pagesweight gain despite loss of appetite.   Upon her assessment she has had a long length of family history (maternal side) of cancer which included breast, cervical, and ovarian cancer. She was diagnosed with endometriosis at the age of thirty and reached menopause at fifty-four. With this initial assessment, her symptoms, and lab results she has been diagnosed with ovarian cancer.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Upon arrival to the emergency department Kristin complains of acute abdominal pain lasting three days with anRead MoreIn The 21St Century, The Advancement In Medical Technology1143 Words   |  5 Pagesscreening for breast cancer is one of the most widely tested for the disease in the U.S. (Gail and Mai, 2010:666). Other pop culture factors have increased the awareness of this type of DNA counseling. In 2013 actress Angelina Jolie wrote a piece for the New York Times where she very publicly discussed her experience with BRCA testing and her decision to have a preventative mastectomy and reconstructive breast surgery as a form of prevention. With her mother dying of breast and ovarian cancer, Jolie wasRead MoreA New York Times Op Ed Article1443 Words   |  6 PagesTimes op-ed article on May 14, 2013 revealed that Angelina Jolie underwent a double mastectomy (Jolie). She did not have cancer. What would prompt a healthy individual to perform such drastic and disfiguring surgery if her life were not in danger? It turns out that she carries a breast cancer gene mutation, BRCA1, which increases the chances of developing breast and ovarian cancer. The availability of genetic testing has caused prophylactic double mastectomy rates to increase dramatically. CelebritiesRead MoreEssay on Breast Cancer 847 Words   |  4 PagesBreast Cancer Chromosome 17 and BRCA1 Among the most common diseases affecting the female population, breast cancer develops in one of every eight American women. This means that almost 200,000 women suffer from the disease each year. Doctors would advise women to take necessary precautions, such as routine surveillance, in order to ensure a life without obtaining this disease prior to understanding any genetic linkage of breast cancer. Although many external factors contribute to breastRead MoreThe Issue Of Breast Cancer830 Words   |  4 PagesThe issue of breast cancer affecting many individuals is a growing one. At the present time period it is now found that one in every eight women will be told they have breast cancer (â€Å"National Breast Cancer Foundation†, 2012). Therefore there is a significant amount of research going into this area. In addition, to the large amount of women and smaller amount of men who will be potentially diagnosed with breast cancer has become a global burden because those with me tastatic cancer will eventuallyRead MoreA Brief Note On Breast Cancer Research Paper863 Words   |  4 PagesGabriela Rolon November 3, 2014 Biology 101 Section-13 Melissa Romero Breast Cancer Research Paper Proto-oncogenes can become mutated and become known as oncogenes, which are also known as cancer cells. The main purpose for proto-oncogenes is to divide the cell, prevent cell differentiation, and to stop cell death. When they are mutated they are called oncogenes, which increase cell division, cell differentiation is decreased instead of preventing it, and prevent cell death. The tumor suppressor

Sale of Human Organ - 1112 Words

Surprisingly, nearly 10 percent of 10,000 English patients, who are on the waiting list for organs transplant, dies each year before they obtain an organ (Bates, 2011). While this number tends to rocket in not only England but also worldwide range, almost all the government still keep passing numerous policies to restrict the supply of transplant organs. Typically, they have long prohibited trafficking human organs regardless of proposals for reform. As a further work on this issue, the article â€Å"Sales of Kidneys Prompt New Law and Debate† from the book â€Å"Topics for Today† (Smith and Mare, 2004) continues providing an insight into the controversy over legalization of commercial transactions in human organs, specially, kidneys. In my opinion,†¦show more content†¦As a result, people should have been allowed to exchange their body organs for money. Notwithstanding, it does not mean that desperately poor people are able to remove indispensable organs for l iving â€Å"voluntarily† based on notion of autonomy. Hence, it was fundamental to set limitations if organ trade could be authorized in the future. Commerce in body parts also narrows the inequalities between rich and poor to some extents. Initially, this claim may sounds nonsense when majority of people believe that legalize payment for organ donors as such payment institutionalizes the belief that the wealthy ill have property rights to the body parts of the poor (Vathsala cited in Ritter, 2008). Nevertheless, the discrimination, in fact, still persists due to the presence of black market for human flesh. By do-or-die situation of patients, the prices in the illegal market reach the extravagant level at which the poor can never afford. Pattinson (2003) illustrated that: â€Å"the desperation of some is somewhat anecdotally highlighted by the attempt of a man from Florida to auction a kidney on eBay- the price got up to $5.7 million before eBay stepped in and cancelled the auction†. On the basis of economic thinking, if the government allow sale of human organs, then it leads to the increasing availability ofShow MoreRel atedSale And Sale Of Human Organs1627 Words   |  7 Pagesthe sale and purchase of human organs would be morally unjustified. For the purposes of this paper, my argument will allow for the term â€Å"market† to be used in its literal, physical sense, as describing a public location for commercial interaction, as well as in reference to the concept of â€Å"the market† in regards to a general domain of economic activity, in this case involving organ selling. In such a manner, we can avoid possible contention regarding what could constitute a market for human organs—suchRead MoreThe Sale of Human Organs2130 Words   |  9 Pagesï » ¿The Sale of Human Organs If your loved one was faced with a life or death situation would you do everything in your power to help them. The easy answer to this would be yes but thousands of people are dying every year because there just aren t enough organs to be transplanted. There are hundreds of thousands of individuals in need of life-saving organ transplants, but the wait list is so long, that human organ sales should be legal. This has the potential to allow patients to look for organsRead MoreThe Sale Of Human Organs858 Words   |  4 PagesThe sale of human organs is a prevalent subject of moral exchanges that displays a civil argument that offers no trading off arrangement. Moral issues required in the selling of human organs make up its ethical issue. No argument is fully accepted when discussing the legitimation of selling human organs. I agree with the position from Savulescu’s article that individuals should be allowed to sell their organs and that it is morally permissible. Based upon figures from 2012, 95,000 Americans wereRead MoreThe Sale of Human Organs2046 Words   |  9 PagesKarra Bryant ENG 1020-011 Mrs. Shiner-Swanson Final Research Paper The Sale of Human Organs In the US recently the issue of human organ trafficking has become a bigger and bigger problem. When people hear that human organs are being bought and sold on the black market, they think that kind of thing only happens in third world countries, but it is quickly becoming one of Americas biggest issues. People spend years of their lives on the transplant list waiting for a life saving operation,Read MoreShould Human Organs for Sale?1685 Words   |  7 PagesHUMAN ORGANS FOR SALE Should the sales of human organs be legally or not, it is quite difficult to find a satisfied answer to this controversial question at the moment. Although a large number of articles were written, numerous speeches were made, countless meetings were hold to discuss about this matter but until now it is still a big controversy issue all over the world. Thanks to the steadily development of scientist, technology and medicine treatment, nowadays human organ can be transplantedRead MoreIllegal Sale Of Human Organs1031 Words   |  5 PagesSale of human organs have been illegal in the U.S. since the National Organ Transplant Act of 1984 was established, but illegal sale of organs still exist on the black market. The black market is where desperate wealthy people can make contact with unscrupulous greedy criminals to secure themselves a kidney or any other type of human organ they may need. The idea that a person’s organ can be purchased online or through a dealer like a car is une thical and objectionable. Potential causes for the thrivingRead MoreLegalize the Sale of Human Organs956 Words   |  4 PagesLegalize the Sale of Human Organs Compensation for the donation of human organs should be legalized for medical use. Medical surgeons everywhere are calling the government to have them legalize the sale of organs for transplants; allowing people to sell their organs would help people by meeting their financial expenses, solve the lack of supply, save many lives, and get control of the black market. Compensation for donating bone marrow is legalized, so why not organs? There has been a hugeRead MoreLegalizing the Sale of Human Organs1071 Words   |  4 PagesLegalizing the sale of human organs has become a very controversial topic in the last few decades. Transplant surgeries were becoming relatively safe to preform, which lead the transplant list to grow rapidly. The debate on how to increment the number of organs available for transplant commenced. Currently organ donations were solely dependent upon cadaveric donors and family members. This shortage has engendered an ebony market for organs sales. People are peregrinating across the country to haveRead MoreLegalizing The Sale Of Human Organs1246 Words   |  5 Pagesincreasing need of organs for medical treatment, illegal organ black markets become more rampant. Under such circumstances, should the government legalize the sale of living human organs? In Joanna MacKay’s essay Organ Sales Will Save Lives, after analyzing from both receivers’ and donors’ perspectives delibe rately, she makes her own credibility to conclude that since there are potential donors and potential sellers that have a strong eager to trade kidneys, legalizing the sale of human organs would bringRead MoreShould Human Organs for Sale?1699 Words   |  7 PagesHUMAN ORGANS FOR SALE Should the sales of human organs be legally or not, it is quite difficult to find a satisfied answer to this controversial question at the moment. Although a large number of articles were written, numerous speeches were made, countless meetings were hold to discuss about this matter but until now it is still a big controversy issue all over the world. Thanks to the steadily development of scientist, technology and medicine treatment, nowadays human organ can be transplanted

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Revenge Of The Witch The Persuasiveness Of Medea

Revenge of the Witch: The Persuasiveness of Medea In Euripides’ play Medea, the reader follows the final day of Medea’s life in Corinth. The wife of Jason of the Argonauts and the mother of his children, Medea’s life has been paved in blood and death. Some years prior to the events of the play, Medea, infatuated with Jason, â€Å"†¦betrayed [her] father and [her] home, and came with [Jason] to Pelias’ land of Iolcus. And then, showing more willingness to help than wisdom, [Medea] killed him, Pelias, with a most dreadful death†¦Ã¢â‚¬  (Medea, 16). Though she displayed immense loyalty to her husband, he is remarried to the daughter of Creon, king of Corinth. A princess in her own right, Medea is infuriated by her husband’s betrayal, swearing her†¦show more content†¦She inflates his ego by validating his reasoning behind his second marriage, pretending to have fallen on his side of things after thinking, rather than following her womanly heart. Furthermore, Medea states that it is her job as his wife to help him and his new bride. â€Å"I should have helped you in these plans of yours, have joined in the wedding, stood by the marriage bed, have taken pleasure in attendance on your bride† (Medea, 28). Additionally, she states that women, by nature, are foolish and â€Å"perhaps a little worthless† (Medea, 29), further validating Jason and his position as The Man. The true fool, however, is Jason, as he easily falls for her persuasive words. He compliments her for her newfound wisdom and cleverness before noticing that she is crying. While the reader is aware that she is planning to kill her children, her own flesh and blood, she informs Jason that â€Å"†¦a woman is a frail thing, prone to crying† (Medea, 30). She pushes him to accept her evil gifts, and to let her children deliver them to his bride to earn her favor— â€Å"They say the gods themselves are moved by gifts†¦Ã¢â‚¬  (Medea, 30)—who dies an agonizing death, along with her father. Throughout the course of a single conversation, Medea, the slighted bride who was cursing Jason’s name, assures her unfaithful husband that she has forgiven him. Even more so, she successfully convinces him that she now believes he was inShow MoreRelatedAthena In Homers Odyssey : The Persuasiveness Of Athena1480 Words   |  6 PagesA Father’s Daughter: The Persuasiveness of Athena in The Odyssey In Homer’s The Odyssey the reader is introduced to a number of powerful women, who, as per the social rules of the time, are expected to bend to the whim of their male counterparts. These women, while persuasive and cunning, fall victim to the patriarchal status of Greek society; Penelope, wife of Odysseus and mother of Telemachus, must obey the word of her son; the nymph Calypso must obey the command of Zeus through Hermes; Nausicaa

Primary Care Protocols A Strategy For An Evidence Based...

An example of the importance of acknowledging the impact of differing and individual perspectives among interprofessional healthcare team members is discussed in the article titled â€Å"Interprofessional primary care protocols: A strategy to promote an evidence-based approach to teamwork and the delivery of care† (Goldman et al., 2010). In this study, Family Health Teams (FHT’s) are trying to come to a consensus regarding the development and implementation of a variety of interprofessional protocols. Findings suggest that the collaborative process of reviewing the evidence and assessing the needs of the FHT as well as learning about the different professional and organizational perspectives, showed to be important elements of the groups work. However, the study worked with volunteer practitioners who were motivated to participate. Therefore, it was recommended that initiatives to improve interprofessional collaboration needed to be addressed at the individual, pract ice, and organizational levels. (Goldman et al., 2010). This would include motivating and readying the individuals to be prepared to collaborate initially and move past possible anxieties for change to progress. Stage 2 – Unfrozen: Changing to a new state (Lewin 1951). Once an individual has accepted they are dissatisfied with their situation, a desire to change will exist. It is at this time the identification of what needs to change occurs. When the unfrozen state exists, new information and concepts areShow MoreRelatedTeam Performance And Patient Safety Initiatives1305 Words   |  6 PagesTeam Performance and Patient Safety Initiatives Patient safety and quality care is the center of every health care provider’s initiatives. According to the Institute of Medicine (IOM) report â€Å"To Err is Human†, adverse events and medical errors happen at an alarming rate with approximately 400,000 deaths a year (Epps Levin, 2015). An evidence-based practice, team strategies and tools to enhance performance and patient safety (TeamSTEPPS), is a comprehensive program that brings staff together toRead MoreImportance of Communication in Healthcare3778 Words   |  16 PagesPromoting effective communication among healthcare professionals to improve patient safety and quality of care This guide was prepared as part of the Victorian Quality Council’s project on improving communication among healthcare professionals. July 2010 VQC – A guide to improving communication among healthcare professionals Published by the Hospital and Health Service Performance Division, Victorian Government Department of Health, Melbourne, Victoria. July 2010 This booklet is available inRead MoreIs Nursing An Essential Part Of Our Society?2868 Words   |  12 Pagescharacter in the development of healthcare in America. I would like to add too that nursing research has begun to take advantage of a big organization of experiential and evidence-based knowledge and this understanding and interest mutual by nurses working with patients in all sorts of settings have resulted in the improvement of health care today. It is important to mention too that The nursing investigation is a emerging discipline that proposals a great deal of chance for discovery, and revolution inRead MoreHarrison Chapter52427 Words   |  10 Pagesemployees, medical staff, patients, community leaders, and technical experts. Panel members base their assessments on utilization rates, outcome measures, patient satisfaction statistics, organizational performance measures, and financial status. While based on data and facts, the conclusions drawn from SWOT analysis are an expert opinion of the panel. d e f I nI T I o n SWOT analysis an examination of an organization’s internal strengths and weaknesses, its opportunities for growth and improvementRead MoreHospital Executive Summary Essay3847 Words   |  16 PagesSTANDARDS UNDER JAHCO. May 07, 2011 Nightingale Community Hospital Mission Nightingale Community Hospital provides professional care that ensures total security and satisfaction to those who wish to benefit from our care. Out of concern for the welfare of our patients and we continually improve the process of improving the quality of health services provided. Services are provided by highly qualified, cooperating withRead MoreMayo Clinic Case7138 Words   |  29 PagesClinic ABSTRACT For many decades, Mayo Clinic has been ranked as one of the top medical institutions in the world. The entire health care industry has been experiencing immense challenges. Given the current and historic success of Mayo, what does Mayo need to do from an HR perspective to maintain this standard of excellence? This case identifies the strategies used by Mayo to achieve excellence in employee and patient satisfaction. The case describes how this complex service organization fostersRead MoreMulti-Agency Working5835 Words   |  24 PagesLeeds, Leeds, UK David Cottrell School of Medicine, University of Leeds, Leeds, UK Child and adolescent mental health (CAMH) services in the UK have a long history of multiagency working. In this article, we explore the difï ¬ culties in agreeing an evidence-base for interagency work, and describe some of the challenges this poses for practitioners and service planners. We use current literature to outline the barriers and facilitators to good multi-agency practice and explore the outcomes of integratedRead MoreHealth: Sociology and Social Care9095 Words   |  37 PagesHNC/D Health and Social Care ------------------------------------------------- UNIT DIRECTORY Unit title: COMMUNICATING IN HEALTH AND SOCIAL CARE ORGANISATIONS Unit code: T/601/1560 Level: 4 Credit value: 15 ------------------------------------------------- AIMS The aim of this unit is to develop learners’ awareness of different forms of communication used in health and social care settings and its importance for effective service delivery. UNIT ABSTRACT Read MoreNVQ level 58726 Words   |  35 Pagesthe person. Person - centred practice is treatment and care and considers the needs of the individual. Person centred practice: Persons perspective is listened to and honoured. Individuals have a role in planning the supports they receive and the staff that are hired. Regularly look at peoples lives to see what is working and not working. Employees know their roles and responsibilities in supporting people. Staff are matched with people based on skill and common interests. Person-centred practiceRead MoreUnit 513 Manage health and social care practice to ensure positive outcomes for individuals10443 Words   |  42 Pageshealth and social care practice to ensure positive outcomes for individuals 1.1 Explain outcome based practice. Outcome based care is about putting the customer at the centre of the care service and not prescribing a one size fits all policy. Care should always be bespoke to the customer taking into account their needs and choices. Care should allow the customer to live a fulfilled life, help them identify and achieve the things they would like to do. Outcome based care requires careful planning

Brain Computer Interface free essay sample

Modifying the human body or enhancing our cognitive abilities using technology has been a long-time dream for many people. An increasing amount of research tries to link the human brain with machines allowing humans to control their environment through their thoughts. Research on BCIs began in the 1970s, but it wasnt until the mid-1990s that the first working experimental implants in humans appeared. Following years of animal experimentation, early working implants in humans now exist, designed to restore damaged hearing, sight and movement. The common thread throughout the research is the remarkable cortical plasticity of the brain, which often adapts to BCIs, treating prostheses controlled by implants as natural limbs. With recent advances in technology and knowledge, pioneering researchers could now conceivably attempt to produce BCIs that augment human functions rather than simply restoring them, previously only the realm of science fiction. 2. Brain Machine Interface (Brain Computer Interface): In this definition, the word â€Å"brain† means the brain or nervous system of an organic life form rather than the mind. Computer† means any processing or computational device, from simple circuits to silicon chips (including hypothetical future technologies such as quantum computing). A Brain Machine Interface (BMI), sometimes called a Direct Neural Interface or a Brain Computer Interface, is a direct communication pathway between a human or animal brain (or brain cell culture) and an external device. In one-way BCIs, computers either accept commands from the brain or send signals to it (for example, to restore vision) but not both. Two-way BCIs would allow brains and external devices to exchange information in both directions but have yet to be successfully implanted in animals or human. Brain-computer interface (BCI) is collaboration between a brain and a device that enables signals from the brain to direct some external activity, such as control of a cursor or a prosthetic limb. The interface enables a direct communications pathway between the brain and the object to be controlled. In the case of cursor control, for example, the signal is transmitted directly from the brain to the mechanism directing the cursor, rather than taking the normal route through the bodys neuromuscular system from the brain to the finger on a mouse. By reading signals from an array of neurons and using computer chips and programs to translate the signals into action, BCI can enable a person suffering from paralysis to write a book or control a motorized wheelchair or prosthetic limb through thought alone. Current brain-interface devices require deliberate conscious thought; some future applications, such as prosthetic control, are likely to work effortlessly. One of the biggest challenges in developing BCI technology has been the development of electrode devices and/or surgical methods that are minimally invasive. In the traditional BCI model, the brain accepts an implanted mechanical device and controls the device as a natural part of its representation of the body. Much current research is focused on the potential on non-invasive BCI. At the European Research and Innovation Exhibition in Paris in June 2006, American scientist Peter Brunner composed a message simply by concentrating on a display. Brunner wore a close-fitting (but completely external) cap fitted with a number of electrodes as shown in fig. Electroencephalographic (EEG) activity from Brunners brain was picked up by the caps electrodes and the information used, along with software, to identify specific letters or characters for the message. The BCI Brunner demonstrated is based on a method called the Wadsworth system. Like other EEG-based BCI technologies, the Wadsworth system uses adaptive algorithms and Pattern-matching techniques to facilitate communication. Both user and software are expected to adapt and learn, making the process more efficient with practice. During the presentation, a message was displayed from an American neurobiologist who uses the system to continue working, despite suffering from amyotrophic lateral sclerosis (Lou Gehrigs disease). He was able to send the following e-mail message: I am a neuroscientist who (sic) couldnt work without BCI. I am writing this with my EEG courtesy of the Wadsworth Center Brain-Computer Interface Research Program. EEG Pattern Recognition This project aims to improve performance of NASA missions by developing brain-computer interface (BCI) technologies for augmented human-system interaction. BCI technologies will add completely new modes of interaction, which operate in parallel with keyboards, speech, or other manual controls, thereby increasing the bandwidth of human-system interaction. The research will extend recent feasibility demonstrations of electromyographic (EMG) methods for neurocontrol to the domain of electroencephalographic (EEG) methods of neurocontrol. These methods will bypass muscle activity and draw control signals directly from the human brain. BCI technologies will provide powerful and intuitive modes of interaction with 2-D and 3-D data, particularly for visualization and searching in complex data structures, such as geographical maps, satellite images, and terrain databases. . Model train control via brain interface machine: Hitachi has successfully tested a brain-machine interface that allows users to turn power switches on and off with their mind. Relying on optical topography, a neuroimaging technique that uses near-infrared light to map blood concentration in the brain, the system can recognize the changes in brain blood flow associated with mental activity and translate those changes into voltage signals for controlling external devices. In the experiments, test subjects were able to activate the power switch of a model train by performing mental arithmetic and reciting items from memory. The prototype brain-machine interface allows only simple control of switches, but with a better understanding of the subtle variations in blood concentrations associated with various brain activities, the signals can be refined and used to control more complex mechanical operations. In the long term, brain-machine interface technology may help paralyzed patients become independent by empowering them to carry out actions with their minds. In the short term, Hitachi sees potential applications for this brain-machine interface in the field of cognitive rehabilitation, where it can be used as an entertaining tool for demonstrating a patient’s progress. NOTE: The earliest interfaces developed in this breakthrough field of research require scientists to insert electrodes into the skull in order to physically tap directly into the brain, and researchers are currently trying to develop technologies that will enable them to access neurological activity through minimally invasive techniques. It is hoped that some day brain machine interfaces will be able to read neural signals non-invasively, from outside the skull, and that devices will be operated involuntarily, without deliberate conscious thought. Thus, for example, fighter pilots wearing specialized helmets may be able to operate some controls automatically, just by thinking. 4. Neuroprosthetics: Neuroprosthetics (also called Neural Prosthetics) is a discipline related to neuroscience and biomedical engineering concerned with developing neural prostheses, artificial devices to replace or improve the function of an impaired nervous system. The neuroprosthetic seeing the most widespread use is the cochlear implant, with approximately 100,000 in use worldwide as of 2006. There are several types of neuroprosthetic as follows: I. Sensory Prosthetics: i. Visual prosthetics: One of the prominent goals in neuroprosthetics is a visual supplement, noting roughly 95% of all people considered blind suffer significant impairment but have some capability (for example, seeing some sort of blur) only about 5% of blind people are totally blind. By the 1940s, researchers had established the concept of artificial electrical stimulation of the visual cortex, and in the late 1960s, British scientist Giles Brindley produced breakthrough findings with a system for placing electrodes on the brains surface. When specific areas of the brain were stimulated in blind volunteers, all reported seeing phosphenes that corresponded to where they would have appeared in space. However, experiments were discontinued because of the uncomfortably high currents required for stimulation on the surface of the brain. Encouraged by this work, the National Institutes of Health undertook a project to develop and deploy an interface based on ultra fine wire (25 to 50 micrometers) densely populated with electrode sites that could be implanted deep into the visual cortex, thus requiring less current than Brindleys original design. This work led to new electrode technology—finer than the width of human hair—that could be safely implanted in animals to electrically stimulate, and passively record, electrical activity in the brain. The efforts produced significant advances in neurophysiology, with publication of hundreds of papers in which researchers attempted to develop an electronic interface to the brain. ii. Auditory prosthetics (cochlear implant): A cochlear implant (or bionic ear) is a surgically implanted device that can help provide a sense of sound to a person who is profoundly deaf or severely hard of hearing. Unlike hearing aids, the cochlear implant does not amplify sound, but works by directly stimulating any functioning auditory nerves inside the cochlea with electrical impulses. External components of the cochlear implant include a microphone, speech processor and transmitter. iii. Prosthetics for pain relief (Spinal Cord Stimulator): The Spinal Cord Stimulator or (Dorsal Column Stimulator) is used to treat chronic neurological pain. It is implanted near the dorsal surface of the spinal cord and an electric impulse generated by the device provides a tingling sensation that alters the perception of pain by the patient. A pulse generator or RF receiver is implanted in the abdomen or buttocks. A wire harness connects the lead to the pulse generator. II. Motor prosthetics: . Bladder control implants (Sacral anterior root stimulator): Where a spinal cord lesion leads to paraplegia, patients have difficulty emptying their bladders and this can cause infection. From 1969 onwards Brindley developed the sacral anterior root stimulator, with successful human trials from the early 1980s onwards. This device is implanted over the sacral anterior root ganglia of the spin al cord; controlled by an external transmitter, it delivers intermittent stimulation which improves bladder emptying. It also assists in defecation and enables male patients to have a sustained full erection. The related procedure of sacral nerve stimulation is for the control of incontinence in able-bodied patients. ii. Sensory/Motor prosthetics: In 2002 an implant was interfaced directly into the median nerve fibres of the scientist Kevin Warwick. The electrode array inserted contained 100 electrodes, of which 25 could be accessed at any one time. The signals produced were detailed enough that a robot arm developed by Warwicks colleague, Peter Kyberd, was able to mimic the actions of Warwicks own arm and provide a form of touch feedback via the implant. Fig: Electrode array Fig: Robot arm iii. Cognitive prosthetics: Sensory and motor prostheses deliver input to and output from the nervous system respectively. Theodore Berger at the University of Southern California defines a third class of prostheses aimed at restoring cognitive function by replacing circuits within the brain damaged by stroke, trauma or disease. Work has begun on a proof-of-concept device a hippocampal prosthesis which can mimic the function of a region of the hippocampus a part of the brain responsible for the formation of memories. . BMI versus Neuroprosthetics: Neuroprosthetics is an area of neuroscience concerned with neural prostheses — using artificial devices to replace the function of impaired nervous systems or sensory organs. The most widely used neuroprosthetic device is the cochlear implant, which was implanted in approximately 100,000 people worldwide as of 2006. [2] There are also several neuroprosthetic devices that aim to restore vision, in cluding retinal implants, although this article only discusses implants directly into the brain. The differences between BCIs and neuroprosthetics are mostly in the ways the terms are used: neuroprosthetics typically connect the nervous system, to a device, whereas the term â€Å"BCIs† usually connects the brain (or nervous system) with a computer system. Practical neuroprosthetics can be linked to any part of the nervous system, for example peripheral nerves, while the term BCI usually designates a narrower class of systems which interface with the central nervous system. The terms are sometimes used interchangeably and for good reason. Neuroprosthetics and BCI seek to achieve the same aims, such as restoring sight, hearing, movement, ability to communicate, and even cognitive function. Both use similar experimental methods and surgical techniques. 6. Future Trends and Scopes: Recent advances in cortically controlled brain-machine interfaces (BMIs) have demonstrated that goal-directed movement of external devices is possible in real-time using multi-electrode recordings from cortex. A number of challenges are currently being confronted to further advance BMI research to the next level. These include choosing the optimal decoding algorithm for the type of control to be performed, localizing the optimal cortical site for reliable control, and focusing on the most suitable electrophysiological signal for practical use in a BMI. We present results that attempt to address these challenges based on multi-electrode recording from multiple motor cortical areas in behaving monkeys. . Conclusion: Although brain–machine interfaces are often talked about in relation to disabled people, we can expect they will also be used by the non-disabled as a means to control their environment especially if the devices are non-invasive and no implants are needed. To date there has not been much public discussion of the implications of brain machine interfaces, the amount of public RD funding they receive, and control, distribution and access to these devices.

Assessment Worksheet free essay sample

What is GRUB and why is it important to lock it down? GRUB is a bootloader. A bootloader is a program that allows the user or administrator to choose which operating system or kernel to load when the computer starts. It is very important to lock this down because of the high access to the kernel and how important aspects can be modified on the fly at anytime during the bootup process because it is unprotected by password. 2. Discuss the purpose of granting â€Å"sudo† access. Why is it a good idea not to log in as a root user? It gives the person access using the sudo access, superuser capability and allows them to run programs with the ecurity privileges of such. Root user has priviledges to do anything on the computer, and has access to kernel. This can cause unstability of the kernel, or even in the wrong hands compromise the system. We will write a custom essay sample on Assessment Worksheet or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page 3. If a file is set with the immutable flag, what security controls does this provide for the file? Immutable permissions designation prevents a file from being changed, even by someone with root level access. 38443_LB02_Pass1. indd 35 28/02/13 4:46 PM 36 Lab #2 | Configure Basic Security Controls on a CentOS Linux Server 4. Is it possible for anyone to edit GRUB with â€Å"vi†? No. Only those with the password can modify GRUB. 5. What visual clues in the prompt tell you that you are logged in as a root user? When logged in as the root user there is a # where there is usually a $ for normal users. 6. What is iptables and how does this help harden the CentOS Linux Server? Iptables are the tables provided by the Linux kernel firewall and the chains and the chains and rules it stores. 7. Why is it important to configure and enable iptables on your CentOS Linux Server? It filters network traffic, and determines how the packets are handled securing the server. 38443_LB02_Pass1. ndd 36 28/02/13 4:46 PM Assessment Worksheet 8. What is the difference between â€Å"setfacl† and â€Å"getfacl†? How can â€Å"setfacl† help achieve security 37 hardening? getfacl get file access control lists. It displays the file name, owner, the group and the Access control list. setfacl set file access control lists. This sets ACLs of files and directories. This can help security hardening, by restricting access to files and directories that are critical to the operation of the kernel.