Control and coding of pupil size by hypothalamic orexin neurons.

ABSTRACT: Brain orexin (hypocretin) neurons are implicated in sleep-wake switching and reward-seeking but their roles in rapid arousal dynamics and reward perception are unclear. Here, cell-specific stimulation, deletion and in vivo recordings revealed strong correlative and causal links between pupil dilation-a quantitative arousal marker-and orexin cell activity. Coding of arousal and reward was distributed across orexin cells, indicating that they specialize in rapid, multiplexed communication of momentary arousal and reward states.

SUBMITTER: Grujic N 

PROVIDER: S-EPMC10322704 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature