Abstract

This chapter discusses that the classical tonotopic maps, consisting of sharply tuned neurons to a narrow frequency range observed at all levels of the rat auditory system provides a very limited description of the interactions between neuronal populations that underlie the function of this system, investigations describing the distributed encoding of important stimulus parameters in other animals strongly support this view. Quantitative reconstruction of receptive fields and neuronal population responses demonstrates the existence of dynamic and distributed representations of auditory information. The dynamic nature of stimulus encoding is evidenced by the existence of spectrotemporal receptive fields. The simultaneous recording from pairs of units revealed that neuronal interactions is observed, suggesting that neural assemblies across the auditory system might be essential for the representation of auditory entities.

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