Visual stimulation drives retinotopic acetylcholine release in the mouse visual cortex
Knudstrup, S. G.; Martinez-Reyes, C.; Rauscher, B.; Doran, P. R.; Fomin-Thunemann, N.; Kılıc, K.; Jiang, J. X.; Devor, A.; Thunemann, M.; Gavornik, J. P.
Show abstract
Cholinergic signaling is involved with a variety of brain functions including learning and memory, attention, and behavioral state modulation. The spatiotemporal characteristics of neocortical acetylcholine (ACh) release in response to sensory inputs are poorly understood, but a lack of intra-region topographic organization of cholinergic projections from the basal forebrain has suggested diffuse release patterns and volume transmission. Here, we use mesoscopic imaging of fluorescent ACh sensors to show that visual stimulation results in ACh release patterns that conform to a retinotopic map of visual space in the mouse primary visual cortex, suggesting new modes of functional cholinergic signaling in cortical circuits.x
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