Chemical heterogeneity of the periglomerular neurons in the olfactory bulb. A review

ABSTRACT

Periglomerular cells are interneurones thatmodulate the primary sensory information inthe olfactory bulb. It was originally assumedthat periglomerular cells constituted a homogeneousGABAergic population in the rat olfactory bulb, but in other species studies addressing this are scarce. However, several authors have shown that this neuronal type exhibits extraordinarily heterogeneous neurochemicalfeatures. The aim of this review is to compile and describe in detail the expression patterns of neuronal markers in the rat olfactory bulb, in particular in periglomerular cells,and to compare such information with previous data on other macrosmatic and microsmaticanimals. Interspecies differences in the neurochemical composition of periglomerular cells could indicate different modes in the modulation of olfactory information (AU)

RESUMEN

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