Fig. 6.

Morphology of a typical intersection of a parallel fiber and a Purkinje cell dendritic tree. Shown are a granule cell (GC) and Purkinje cell (PC) pair filled with biocytin during the whole-cell recording (without a detectable connection) and subsequently labeled. A, Somatic level. The plane of Purkinje cell dendritic tree extends down into the slice in a bottom left to top right plane.B, Near the level of intersection. The parallel fiber (PF) is seen shortly after it has traversed the dendritic tree near its middle. The parallel fiber is an enhanced montage of two images separated by 10 μm vertically. Only a tiny section of the ascending axon (AA) is captured in the image, although it could be followed easily when the focus is adjusted continuously. Scale bar, 50 μm.