Auditory spatial receptive fields created by multiplication

J. L. Peña, M. Konishi

Research output: Contribution to journalArticle

169 Scopus citations

Abstract

Examples of multiplication by neurons or neural circuits are scarce, although many computational models use this basic operation. The owl's auditory system computes interaural time (ITD) and level (ILD) differences to create a two-dimensional map of auditory space. Space-specific neurons are selective for combinations of ITD and ILD, which define, respectively, the horizontal and vertical dimensions of their receptive fields. A multiplication of separate postsynaptic potentials tuned to ITD and ILD, rather than an addition, can account for the subthreshold responses of these neurons to ITD-ILD pairs. Other nonlinear processes improve the spatial tuning of the spike output and reduce the fit to the multiplicative model.

Original languageEnglish (US)
Pages (from-to)249-252
Number of pages4
JournalScience
Volume292
Issue number5515
DOIs
StatePublished - Apr 13 2001
Externally publishedYes

ASJC Scopus subject areas

  • General

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