Cerebellar climbing fibers convey perceptual choice during decision-making
Yiu, T. L.; Wilson, E. A.; Yahiro, T.; Ma, L.; Qin, M.; Zhong, H.
Show abstract
Cerebellar climbing fibers are thought to signal reward prediction errors in non-motor functions. By imaging postsynaptic responses of climbing fibers onto mouse Purkinje cell dendrites during auditory discrimination, we found that climbing fibers in crus I can encode cue identities or perceptual choices. These responses were reshaped by reversal learning. Optogenetic perturbation of climbing fiber activity impaired discrimination. These results suggest a feedforward role of climbing fibers in perceptual decision-making.
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