Synchronization between patches of local excitation in a cerebellar granular layer model

摘要

In a model of the cerebellar granular layer, pairs of neuropns aligned along the parallel fieber axis fired synchronized over long distances provided the afferent mossy fibers were spatially uniformly excited. Here, we applied a nonuniform mossy fiber input pattern and found that local patches of increased granule cell activity were sharpened by the feedback inhibition which granule cells received from Golgi cells. These local patches maintained their own rhythm, or synchronized with each other, depending on the distance between them and on their absolute and relative levels of activity.