An excitatory glutamatergic interneuron found in the granular layer of the cerebellar cortex and also in the granule cell domain of the cochlear nucleus. Unipolar brush cells have a round or oval cell body with usually a single short dendrite that ends in a brush-like tuft of short dendrites unique to them known as dendrioles. [ WikipediaVersioned:Unipolar_brush_cell&oldid=1045937026 http://www.ncbi.nlm.nih.gov/pubmed/9193142 ]