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单词 Alarm reaction
释义

Alarm reaction

英语百科

Startle response

(重定向自Alarm reaction)
Layout of the brain

In animals, including humans, the startle response is a largely unconscious defensive response to sudden or threatening stimuli, such as sudden noise or sharp movement, and is associated with negative affect. Usually the onset of the startle response is a startle reflex reaction. The startle reflex is a brainstem reflectory reaction (reflex) that serves to protect vulnerable parts, such as the back of the neck (whole-body startle) and the eyes (eyeblink) and facilitates escape from sudden stimuli. It is found across the lifespan of many species. An individual's emotional state may lead to a variety of responses.

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更新时间:2025/6/20 15:55:22