http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Do our own prejudices and perceptions of people help defend our bodies against infectious disease? http://medicalxpress.com/news/2011-05-immunity-mind.html Psychology & Psychiatry Wed, 11 May 2011 09:51:57 EST news224326304 Adversity, we are told, heightens our senses, imprinting sights and sounds precisely in our memories. But new Weizmann Institute research, which appeared in Nature Neuroscience this week, suggests the exact opposite may be the case: Perceptions learned in an aversive context are not as sharp as those learned in other circumstances. The findings, which hint that this tendency is rooted in our species' evolution, may help to explain how post-traumatic stress syndrome and other anxiety disorders develop in some people. http://medicalxpress.com/news/2011-05-scientists-adversity-dulls-perceptions.html Neuroscience Wed, 11 May 2011 09:26:24 EST news224324750