Word: neurologists
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Dates: during 2000-2009
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...upon us again? Partly because the debate about MDMA's harmfulness has never been resolved. Johns Hopkins neurologist George Ricaurte has concluded in several animal studies and one human study that MDMA can damage a particular group of the brain's nerve cells. But he wants more research. Last week Ricaurte said his work has never shown that the damage to the affected cells has any visible effect on "the vast majority of people who have experimented with MDMA." The debate has now found its way onto the Web, where the old therapist crowd behind MDMA has become active...
...connections between neurons--the synapses--are formed on branchlike structures called dendrites. In a normal, healthy person, these can gradually shrink over time, slowing the process of recalling information and leading to those familiar lapses called "senior moments." Memory gridlock is bothersome, but, says Johns Hopkins neurologist Barry Gordon, "what most people complain about is not that serious at all. They're probably not going to get Alzheimer's; they just care more about forgetfulness as they get older...
...number of hours of sleep necessary varies between different individuals. On average, however, a teenager should sleep about nine hours nightly, says Dr. Helene A. Emsellem, a neurologist with the Sleep Disorder Center in Washington...