Abstract:
:The basolateral amygdala (BLA) is critical for associating initially neutral cues with appetitive and aversive stimuli and receives dense neuromodulatory acetylcholine (ACh) projections. We measured BLA ACh signaling and activity of neurons expressing CaMKIIα (a marker for glutamatergic principal cells) in mice during cue-reward learning using a fluorescent ACh sensor and calcium indicators. We found that ACh levels and nucleus basalis of Meynert (NBM) cholinergic terminal activity in the BLA (NBM-BLA) increased sharply in response to reward-related events and shifted as mice learned the cue-reward contingency. BLA CaMKIIα neuron activity followed reward retrieval and moved to the reward-predictive cue after task acquisition. Optical stimulation of cholinergic NBM-BLA terminal fibers led to a quicker acquisition of the cue-reward contingency. These results indicate BLA ACh signaling carries important information about salient events in cue-reward learning and provides a framework for understanding how ACh signaling contributes to shaping BLA responses to emotional stimuli.
journal_name
Elifejournal_title
eLifeauthors
Crouse RB,Kim K,Batchelor HM,Girardi EM,Kamaletdinova R,Chan J,Rajebhosale P,Pittenger ST,Role LW,Talmage DA,Jing M,Li Y,Gao XB,Mineur YS,Picciotto MRdoi
10.7554/eLife.57335subject
Has Abstractpub_date
2020-09-18 00:00:00issn
2050-084Xpii
57335journal_volume
9pub_type
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