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Auditory Spatial Receptive Fields Created by Multiplication

Peña, José Luis and Konishi, Masakazu (2001) Auditory Spatial Receptive Fields Created by Multiplication. Science, 292 (5515). pp. 249-252. ISSN 0036-8075. doi:10.1126/science.1059201.

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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.

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Additional Information:© 2001 American Association for the Advancement of Science. Received 22 January 2001; accepted 9 March 2001. We thank P. Mitra and F. Gabbiani for their advice on using the svd, G. Kreiman and B. Christianson for their help with mathematics, C. Koch and G. Laurent for their enthusiasm and criticisms, C. Malek for computer matters, and G. Akutagawa for histology. This work was supported by NIH grant DC00134.
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Issue or Number:5515
Record Number:CaltechAUTHORS:20141112-134937985
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51673
Deposited By: Tony Diaz
Deposited On:12 Nov 2014 21:53
Last Modified:10 Nov 2021 19:14

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