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. Author manuscript; available in PMC: 2015 Jan 22.

Published in final edited form as: Exerc Sport Sci Rev. 2011 Jul;39(3):140–149. doi: 10.1097/JES.0b013e31821f7e45

Proposed role of 5-hydroxytryptamine (5-HT) in the development and expression of learned helplessness (LH) behaviors. ■ indicates 5-HT_1A autoreceptor; □, α_1b-adrenergic receptor; , 5-HT₂C receptor; BLA, basolateral nucleus of the amygdala; BST, bed nucleus of the stria terminalis; NE, norepinephrine.

Inline graphic — Proposed role of 5-hydroxytryptamine (5-HT) in the development and expression of learned helplessness (LH) behaviors. ■ indicates 5-HT_1A autoreceptor; □, α_1b-adrenergic receptor; , 5-HT₂C receptor; BLA, basolateral nucleus of the amygdala; BST, bed nucleus of the stria terminalis; NE, norepinephrine.