2008-07-03 正子掃描 (PET SCAN) 掃描運用於焦慮研究

張貼者:2008年7月2日 下午9:56林昆儒   [ 已更新 2009年6月28日 上午8:29 ]
近來研究團體利用 正子掃描 (PET SCAN)  進行腦焦慮科學研究。
 
HealthEmotions Research Institute 以及Department of Psychiatry at the University of Wisconsin School of Medicine and Public Health研究焦慮的猴子。研究者觀察年輕猴腦中的腦活化程度,焦慮程度,以及壓力賀爾蒙,發現,越是有焦慮傾向的受試者,其腦中的杏仁核活化程度越明顯,而杏仁核正是負責管控情緒以及驚恐反應的中樞。
 
原文摘錄:The study looked at brain activity, anxious behaviour, and stress hormones in adolescent rhesus monkeys, which have long been used as a model to understand anxious temperament in human children. Anxious temperament is important because it is an early predictor of the later risk to develop anxiety, depression, and drug abuse related to self medicating. The researchers found that those individuals with the most anxious temperaments showed higher activity in the amygdala, a part of the brain that regulates emotion and triggers reactions to anxiety, such as the fight or flight response. These anxious monkeys had more metabolic activity in the amygdala in both secure and threatening situations. (來源出處: http://www.eurekalert.org/pub_releases/2008-07/plos-oas063008.php)
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