Synaptic inhibition of Purkinje cells mediates consolidation of vestibulo-cerebellar motor learning

P Wulff, martijn Schonewille, M Renzi, L Viltono, M Sassoe-Pognetto, A Badura, ZY Gao, Freek Hoebeek, S (Stijn) van Dorp, W Wisden, M Farrant, Chris de Zeeuw

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Although feedforward inhibition onto Purkinje cells was first documented 40 years ago, we understand little of how inhibitory interneurons contribute to cerebellar function in behaving animals. Using a mouse line (PC-Delta gamma 2) in which GABA(A) receptor mediated synaptic inhibition is selectively removed from Purkinje cells, we examined how feedforward inhibition from molecular layer interneurons regulates adaptation of the vestibulo-ocular reflex. Although impairment of baseline motor performance was relatively mild, the ability to adapt the phase of the vestibulo-ocular reflex and to consolidate gain adaptations was strongly compromised. Purkinje cells showed abnormal patterns of simple spikes, both during and in the absence of evoked compensatory eye movements. On the basis of modeling our experimental data, we propose that feedforward inhibition, by controlling the fine-scale patterns of Purkinje cell activity, enables the induction of plasticity in neurons of the cerebellar and vestibular nuclei.
Original languageUndefined/Unknown
Pages (from-to)1042-U118
JournalNature Neuroscience
Issue number8
Publication statusPublished - 2009

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  • EMC ONWAR-01-94-01

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