Regeneration of Brain Cells

Regeneration of Brain Cells For almost 100 years, it had been a mantra of biology that  brain cells or neurons  do not regenerate. It was thought that all your significant brain development happened from conception to age 3.  Contrary to that widely held popular belief, scientists now know that neurogenesis continuously occurs in specific regions in the adult brain. In a startling scientific discovery  made in the late 1990s, researchers at Princeton University found that new neurons were continually being added to the brains of adult monkeys. The finding was significant because monkeys and humans have similar brain structures. These findings and several others looking at cell regeneration in other parts of the brain opened up a whole new line of research about adult neurogenesis, the process of the birth of  neurons from neural stem cells in a mature brain.   Pivotal Research on Monkeys Princeton researchers first found  cell regeneration in the hippocampus  and the subventricular zone of the  lateral ventricles  in monkeys, which are important structures for memory formation and functions of the central nervous system.   This was significant but not quite as important as the 1999 finding of neurogenesis in the  cerebral cortex  section of the monkey brain. The cerebral cortex is the most complex part of the brain and scientists were startled to find neuron formation in this high-function brain area. The lobes of the cerebral cortex  are responsible for higher-level decision making and learning. Adult neurogenesis was discovered in three areas of the cerebral cortex: The prefrontal region, which controls decision-makingThe inferior temporal region, which plays a role in visual recognitionThe posterior parietal region, which plays a role in 3D representation Researchers believed that these results called for a fundamental reassessment of the development of the primate brain. Although the cerebral cortex research had been pivotal for advancing scientific research in this area, the finding remains controversial since it has not yet been proved to occur in the human brain. Human Research Since the Princeton primate studies, newer research has shown that human cell regeneration occurs in  the olfactory bulb, which is responsible for sensory information for the sense of  smell, and the dentate gyrus, a part of the hippocampus responsible for memory formation. Continued research on adult neurogenesis in humans has found that other areas of the brain may also generate new cells, particularly in the amygdala and the hypothalamus. The amygdala is the part of the brain governing emotions. The hypothalamus helps maintain the  autonomic nervous system and the hormone activity of the pituitary, which controls body temperature, thirst, and hunger and is  also involved in sleep and emotional activity. Researchers are optimistic that with further study scientists might one day unlock the key to this process of brain cell growth and use the knowledge to treat a variety of psychiatric disorders and brain diseases, like Parkinsons and Alzheimers. Sources Fowler, C D, et al. â€Å"Estrogen and adult neurogenesis in the amygdala and hypothalamus. Brain research reviews., U.S. National Library of Medicine, Mar. 2008.Lledo, P M, et al. â€Å"Adult neurogenesis and functional plasticity in neuronal circuits. Nature reviews. Neuroscience., U.S. National Library of Medicine, Mar. 2006.â€Å"Princeton - News - Scientists Discover Addition of New Brain Cells in Highest Brain Area.†Ã‚  Princeton University, The Trustees of Princeton University.Vessal, Mani, and Corinna Darian-Smith. â€Å"Adult Neurogenesis Occurs in Primate Sensorimotor Cortex following Cervical Dorsal Rhizotomy. Journal of Neuroscience, Society for Neuroscience, 23 June 2010.

6 traits of great managers

6 traits of great managers Want to be boss at being a boss? It’s not as simple as just being a good listener and making sure everyone shows up on time. Truly great managers attract the best workers. If you’re good at being in charge, you  hold onto star employees and advance their careers right along with yours. Managing is not an easy skill, but it is possible to build. Even if you think you’re pretty great already, take a look at these tips and see whether you can improve in any particular area. Your employees will thank you, and so will your boss.1. Have your employees’ backs.Bad bosses throw their employees under the bus. Don’t be that boss. When your team exists within a bubble of trust and has faith in its leader, all the members will want to work together to meet professional goals. Show off your employees’ successes and provide cover for them when you need to. When you build an environment of respect, your job will be so much easier.2. Be generous with your t ime.Even if you see the people who report to you directly all the time in the hall or during casual drop-ins, it’s still important to devote some of your weekly schedule to one-on-one meetings with your team. Even just 15-30 minutes of dedicated check-in time per person lets your employees know you’re there to address concerns and check in on their progress.3. Give productive feedback.Giving feedback is important, but go out of your way to make sure you give great feedback. Don’t just tell someone they did a â€Å"great job,† tell them why what they did was so great. If you receive work that’s sub-par, speak up- don’t just hope things improve the next time. Constructive criticism along the way for the small stuff helps employees reach their professional goals. When your employees know you’re invested in them doing well, they’ll step up their game for every task.4. Empower employees to reach for the stars.Push your team to do st ellar work (and letting them know you think they’re capable of it)- don’t let them settle for merely okay. Not only will this lead to results you and your team can flaunt, but it also will instill confidence that makes employees want to go above and beyond all the time. Expect top notch work, and people will adjust to meet your expectations.5. Build trust.Having a genuine relationship with your employees is a great thing. You definitely don’t have to be too casual and buddy-buddy- your style can remain strictly professional and still be built on trust. Create a rapport so people feel they can come to you with problems and mistakes- or great ideas! Don’t wall yourself off in some boss turret and forget to build relationships with the people you’re tasked to lead.6. Stay humble.Remember, even if you’ve climbed high up on the ladder you’re still paying your dues. You’re still learning too- about your industry and about the art of managing people. Don’t just sit back on your laurels. Figure out how your team can help you learn and build your career, and then help them in return.

Information Security and Ethics Essay Example | Topics and Well Written Essays - 500 words - 1

Information Security and Ethics - Essay Example Organizational strategies (policies, leadership, training, etc.) specification is one policy that would be required where each employee has his or her computer, to prevent spread of viruses when one is infected. Further, the organization should control the sites in the network and also external devices plugged into to the computer. This can be appropriately be described as type of software that support advertisements. It displays or downloads a banner that is not wanted by the user, within his or her software. The software is most of the time embedded with the software of interest by the manufacturer, with the intent of sinking the cost of development. With regard to protecting the organization system from adware, the organization should ensure that, only licensed and registered software is purchased. They should also install antivirus to attack the abrupt advertisements. Furthermore, it should within the planning of the organization, to trades with licensed software producing companies. It should also ensure that employees have clear instruction as to whom to consult in case of software installation in their computers. The impact of the threat is that it can either corrupt the data or steal the information stored by the user. Example is the computer virus which decodes or corrupts the system information of the computer, autorun   It is defined as a malicious set of instructions that executes actions within the machine without user’s legal authorization. The impacts of Trojan include data copying, modification, blocking, deleting or even disruption of network and computer performances.   Installation of firewall, security passwords, and data encryption should be done. The local connection within the organization should have identification, such that; only those people permitted to access, can gain entry in to the system. Another threat experienced by the organizations is hackers. These are unwarranted users of network or computer. Their impact to

History 2 Essay Example | Topics and Well Written Essays - 500 words - 2

History 2 - Essay Example .The protagonist Gen is a small boy whose family lives in Hiroshima during the 1940’s.Like most of the Japanese families, it is a patriarchal family , where all the family members honor and obey the words of the father. Gen’s father, who has understood the futility of war, is against it. This makes the family unpopular in the town. The book shows the blind loyalty of the Japanese to their Emperor. It was this mistaken sense of loyalty which made them turn against anybody talking about the evils of war. The Japanese had a sense of honor which made them commit suicide in stead of finding practical solutions to the problems that faced them. Gen’s father disapproved of this warped sense of values of his people. But his opposition to war was not supported by the others who regarded him as a traitor. The second volume tells us about what happened immediately after the Bomb was dropped. . â€Å"The city of Hiroshima had disappeared, buried under cries of pain and piles of corpses† (Nakazawa p.4) The drawings of the dying Japanese with the flesh of their bodies oozing out is very disturbing, even though it is in black and white The hands of the victims, stiff and curled as if grasping at an ephemeral hope, tell their tale better than any words. Then there is the heartrending scene of the little girl Setsuko of first grade, who , while dying, requests Gen to tell her parents that she â€Å"died here† (p.2) Gen echoes the despairing cry of the nation as a whole, when he says, â€Å"everything is gone†¦everything has disappeared. What will become of us?† (p.7) The spirit of Gen’s father tells him to survive and take care of his mother. Here too, Gen echoes the will of the Japanese people, when he decides to survive. The sight of the bodies lying everywhere, and the cry for water of the dying confronted Gen when he goes to look for some rice for his mother, so that his infant sister

Affirmative Action :: essays research papers

Affirmative action has two distinct meanings. The first definition of affirmative action refers to individuals having equal opportunity without regard to their sex, race, and religion. The second meaning is almost exactly the same, except that it is directly related to sex, race, and religion. Affirmative action was brought about to ensure the freedom and rid of discrimination in many different situations. For example, many "Upper Class " jobs, such as government employment, were rarely ever given to the minority classes. Although, affirmative action has had numerous negative impacts despite the fact that it was created for the good of society.(http://www.adversity.net/Terms_Definitions/TERMS/Affirmative_Action.htm) The United States authorized the Civil Rights in 1964, as a result, many problems were brought about in society and the way it functioned. Many disadvantages and consequences were faced for people with physical complications such as those with handicaps or the elderly. In time, the problem became greater and something had to be done in order to resolve this issue. On September 24, 1965, President Lyndon B. Johnson made Executive Order #11246 official at Howard University which required federal employees "to take affirmative action to ensure that applicants are employed..without regard to their race, creed, color, or national origin." Without knowing so, President Johnson had created one of the most problematic and ironically one of the most segregated legislations.(Compton’s Interactive Encyclopedia) At first affirmative action was made in order to assist the under privileged people of America which was highly discriminated against when the Civil Rights act was brought about. There was social conflict, economic stress, and racial tension did not make the position of those with no source of income any easier. Was it a coincidence that most entrepreneur, business leaders, and managing positions in the United States was held by white males? It did not take long before the majority realized that the business leaders and corporate executives were discriminating towards minorities and those not of the same race, religion, or sex. President Johnson's choice was highly approved by most of the middle and lower class people. Naturally, the leaders, executives, and managers did not think highly of President Johnson.(Compton’s Interactive Encyclopedia) Not so long after the legislation was passed, many minority groups were already seeking revenge and were looking to take advantage of the newly implemented affirmative action laws. The main minority group that was affected by the new laws were those of African-American decent.

Impact Hammurabi’s Code of Laws and Egyptians Be Human Essay

Select a minimum of TWO [2] primary-source documents [easier if a contrast] from the list on Blackboard HICC 101 course package as a basis to answer the central questions listed below. In other words, answer the question using evidence from what the authors at the time thought about these issues. Always clearly state your idea first, and then quote from the source. REMEMBER: the term â€Å"quote† should be restricted to a verb form. You are quoting the text, but if you refer to the text, don’t say â€Å"In this quote†; refer to the â€Å"statement† or â€Å"text.† All quotations from the primary sources must state the author’s last name (or title of book) and page number in parentheses directly following the quote. You will need to quote the most significant passages in order to support your claims. Keep the length of all quotations to a minimum, and make certain that you interpret and point out the meaning of the text [texts are never obviou s]. Quote only what you can explain: quotations are only evidence for the points you already make! In order to reflect on a document you will have to quote it several times. Never quote your professor or class notes; they only teach you the material so you can find evidence in published texts, like your text book, which you can choose to quote in a limited way, but is not necessary. This assignment is your analysis of the primary sources (thus: never begin or end a paragraph with a quotation), and always interpret and explain the quotation in light of the idea that you have made. A good paragraph (in a nut shell) has one central idea, the idea is explained, then evidence is suggested (quote), then interpretation, then conclusion of the idea. Primary Source paper #1 reflect on any of the material in Units I, II, III. Central Question: How did civilizations in the ancient world view humanity? What did it mean to be human? Compare and contrast at least two different civilizations (i.e. Mesopotamian, Hebrew, Greek, or Roman). Primary Source paper #2 reflect on any of the material in Units IV, V. Central Question: How did Christians in the European West [AD 200-1600] develop the Catholic intellectual tradition? How did they balance the wisdom from Greco-Roman thought with Christian theology, and what balance was developed between faith and reason? Compare and contrast an author from the early medieval period (any Christian thinkers before 1000 AD) with an author from the high Middle Ages or Renaissance period (after 1000 AD). Primary Source paper #3 reflect on any of the material in Units VI on China. Central question: What did Chinese authors [1500 BC- AD 220] think was necessary to forge a more just society for the common good? Compare and contrast two different authors. You may refer to some of the authors in Units I-V to compare and contrast, but most of the paper should be reflecting on Chinese authors

Cognitive Development Throughout A Lifetime - 913 Words

Cognitive Development Throughout a Lifetime Children are different from adults when it comes to a lot of things, memory being one of them. This is because children are able to better receive and process large amounts of information vs adults. There are many reasons for this. Mostly because the brain of a child is open and excited about their surroundings and new experiences. Because they are so openly engaged in their environment, this causes them to be more aware of small details that most adults would not normally pick up on. The brain of a child is also growing at a much faster rather than that of an adult. The growth rate corresponds with the rapid cell increases that occur in other places of a child’s body as they develop (Papass,2010) The way in which children and adults receive information is the same. The main difference though between the memory of a child and an adult is that children make use of their memory in a more inefficient way than adults. This is just becaus e adults have more real world experience in deciding what information is useful to use on a daily basis. This is based off adult’s experience and memories from positive outcomes which are produced from recalling and using certain information. The way adults receive information also makes them better at processing new information and being able to put new information with other stored information they already have. This makes them efficiently use there memoires in a way that enhancesShow MoreRelatedThe Frequency of Social and Intellectual Activities Within Young Adults and Their Influences on Cognitive Functioning1759 Words   |  7 Pageswhich has more influence on their cognitive functioning skills such as attention, perception, memory, problem solving and reasoning. There has been a lot of research into the decline in cognitive abilities as we get older and how our lifestyle affects these abilities. 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