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plural amygdalas or amygdalae
(neuroanatomy) Each one of the two regions of the brain, located as a pair in the medial temporal lobe, believed to play a key role in processing emotions, such as fear and pleasure, in both animals and humans. quotations examples
Cognitive scientists distinguish between normal risk-assessment decisions, which activate the reward-prediction regions of the brain, and decisions made amid extreme uncertainty, which generate activity in the amygdala.
2009 February 12, David Brooks, “The Worst-Case Scenario”, in New York Times