Olfactory bulb acetylcholine release dishabituates odor responses and reinstates odor investigation.

ABSTRACT: Habituation and dishabituation modulate the neural resources and behavioral significance allocated to incoming stimuli across the sensory systems. We characterize these processes in the mouse olfactory bulb (OB) and uncover a role for OB acetylcholine (ACh) in physiological and behavioral olfactory dishabituation. We use calcium imaging in both awake and anesthetized mice to determine the time course and magnitude of OB glomerular habituation during a prolonged odor presentation. In addition, we develop a novel behavioral investigation paradigm to determine how prolonged odor input affects odor salience. We find that manipulating OB ACh release during prolonged odor presentations using electrical or optogenetic stimulation rapidly modulates habituated glomerular odor responses and odor sal

SUBMITTER: Ogg MC 

PROVIDER: S-EPMC5951802 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature