Journal
CELL REPORTS
Volume 42, Issue 9, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.celrep.2023.113088
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Cortical circuit function is regulated by VIP-INs, which play important roles in shaping circuit operation and modulating sensory processing according to the behavioral context.
Cortical circuit function is regulated by extensively interconnected, diverse populations of GABAergic inter -neurons that may play key roles in shaping circuit operation according to behavioral context. A specialized population of interneurons that co-express vasoactive intestinal peptides (VIP-INs) are activated during arousal and innervate other INs and pyramidal neurons (PNs). Although state-dependent modulation of VIP-INs has been extensively studied, their role in regulating sensory processing is less well understood. We examined the impact of VIP-INs in the primary visual cortex of awake behaving mice. Loss of VIP-IN ac-tivity alters the behavioral state-dependent modulation of somatostatin-expressing INs (SST-INs) but not PNs. In contrast, reduced VIP-IN activity globally disrupts visual feature selectivity for stimulus size. More-over, the impact of VIP-INs on perceptual behavior varies with context and is more acute for small than large visual cues. VIP-INs thus contribute to both state-dependent modulation of cortical activity and sensory context-dependent perceptual performance.
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