bims-climfi Biomed News
on Cerebellar cortical circuitry
Issue of 2020‒07‒12
one paper selected by
Jun Maruta
Mount Sinai Health System

  1. Proc Natl Acad Sci U S A. 2020 Jul 06. pii: 202005633. [Epub ahead of print]
    Chang W, Pedroni A, Hohendorf V, Giacomello S, Hibi M, Köster RW, Ampatzis K.
      Purkinje cells, the principal neurons of cerebellar computations, are believed to comprise a uniform neuronal population of cells, each with similar functional properties. Here, we show an undiscovered heterogeneity of adult zebrafish Purkinje cells, revealing the existence of anatomically and functionally distinct cell types. Dual patch-clamp recordings showed that the cerebellar circuit contains all Purkinje cell types that cross-communicate extensively using chemical and electrical synapses. Further activation of spinal central pattern generators (CPGs) revealed unique phase-locked activity from each Purkinje cell type during the locomotor cycle. Thus, we show intricately organized Purkinje cell networks in the adult zebrafish cerebellum that encode the locomotion rhythm differentially, and we suggest that these organizational properties may also apply to other cerebellar functions.
    Keywords:  Purkinje cells; central pattern generator; cerebellum; locomotion; zebrafish