8月11日,美國(guó)研究人員發(fā)表報(bào)告稱,,他們?cè)诤愫雍镉缀锎竽X中發(fā)現(xiàn)兩個(gè)感應(yīng)焦慮的區(qū)域,。他們認(rèn)為,在人類幼兒大腦中類似區(qū)域可能發(fā)揮著同樣作用,。這項(xiàng)研究成果發(fā)表在英國(guó)《自然》(Nature)雜志上,。
利用正電子發(fā)射計(jì)算機(jī)斷層掃描技術(shù),美國(guó)威斯康星-麥迪遜大學(xué)研究人員測(cè)試了238只幼年恒河猴面對(duì)威脅時(shí)的大腦活動(dòng),。結(jié)果顯示,,恒河猴越焦慮,其大腦杏仁中央核及海馬前區(qū)的活動(dòng)越劇烈,。反之,,根據(jù)上述兩個(gè)區(qū)域的活動(dòng)情況,也可判斷幼猴的焦慮程度,。
研究人員說(shuō),,一些兒童或青少年表現(xiàn)出焦慮癥的早期征象,例如異常害羞,、懼怕陌生人等,,這些人長(zhǎng)大成人后,很可能通過(guò)酒精,、大麻等進(jìn)行自我治療,。如能證實(shí)上述兩個(gè)區(qū)域也是人類幼兒的焦慮反應(yīng)區(qū),將有助于對(duì)患焦慮癥風(fēng)險(xiǎn)較高的兒童提前給予介入治療,。(生物谷Bioon.com)
生物谷推薦原文出處:
Nature doi:10.1038/466827a
Behavioural neuroscience: Genes and the anxious brain
Andreas Meyer-Lindenberg1
Some people are naturally more anxious than others. A brain-imaging study in monkeys provides surprising insights into which brain regions are under the influence of genes in this phenomenon and which are not.
How anxiously we react to threat or adversity is part of our personality. This stable characteristic is called trait anxiety, and those with high trait anxiety are more prone to mental disorders such as depression, substance abuse and psychosis1.