槟榔的隐患

年轻女子们沿着台湾的大街小巷站好位置,兜售着一种危险却越来越受欢迎的小吃:槟榔。顾客们把熟石灰抹在槟榔树的种子上,再用蒌叶包起来——“蒌叶果”的别名由此而来——接着便丢入口中大嚼。吃这种东西会上瘾。和烟草嚼块一样,槟榔能使人产生微醺的感觉,减轻饥饿感,消除疲劳。吃这种东西的样子也很     

红发警报

英国的哈里王子是否拥有濒临灭绝的红发基因?今年报刊上纷纷报道,地道的红发人将在2100年彻底灭绝。因为在全球大融合的时代,两个红发人结合的几率越来越小。通常,只有父母都携带红发基因,子女才可     

Margaret Kennard on sparing and recovery of function: a tribute on the 100th anniversary of her birth

Margaret Kennard was an American pioneer in the experimental study of sparing and recovery of function. Her most famous experiments were performed on monkeys and apes at Yale University during the late 1930s and early 1940s. By describing the behavioral effects of brain damage on infantile, juvenile, and older primates, she drew new attention to just how important developmental status can be at the time of neural insult. Kennard also conducted experiments which showed that even adult primates can exhibit significant sparing and recovery of function, especially if brain lesions are made in stages rather than all at once. In many respects, Kennard helped launch the modern era of research on sparing and recovery of function by demonstrating that several factors in addition to lesion locus can affect post-injury performance and by recognizing that, if neural reorganization does occur, it probably takes place in spared parts of the damaged system.     

A perplexing document in the early history of Gilles de la Tourette Syndrome: Melotti's rendition of a "Lecture of Charcot" (including a complete translation from the Italian with commentary)

In 1885, Dr. Guilio Melotti published an Italian translation of a lecture on "Convulsive Tics with Coprolalia and Echolalia" given by Jean-Martin Charcot. Although this lecture often has been cited as an authoritative statement of Charcot's view, until now it has not been translated into English. The lecture presents a number of statements that appear nowhere else in Charcot's published corpus, including some that seem to contradict Charcot's other pronouncements on maladie des tics. Although the Melotti-Charcot lecture may portray Charcot's position accurately in many passages, the article most likely is a compilation from a variety of sources.