# Show Reference: "A Place Theory of Sound Localization"

A Place Theory of Sound Localization Journal of Comparative and Physiological Psychology, Vol. 41, No. 1. (February 1948), pp. 35-39 by Lloyd A. Jeffress
@article{jeffress-1948,
author = {Jeffress, Lloyd A.},
citeulike-article-id = {11733586},
citeulike-linkout-0 = {http://view.ncbi.nlm.nih.gov/pubmed/18904764},
citeulike-linkout-1 = {http://www.hubmed.org/display.cgi?uids=18904764},
issn = {0021-9940},
journal = {Journal of Comparative and Physiological Psychology},
keywords = {ann, itd, localization, model, mso, ssl},
month = feb,
number = {1},
pages = {35--39},
pmid = {18904764},
posted-at = {2014-10-27 17:07:25},
priority = {2},
title = {A Place Theory of Sound Localization},
url = {http://view.ncbi.nlm.nih.gov/pubmed/18904764},
volume = {41},
year = {1948}
}



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The model of biological computation of ITDs proposed by Jeffress extracts ITDs by means of delay lines and coincidence detecting neurons:

The peaks of the sound pressure at each ear lead, via a semi-mechanical process, to peaks in the activity of certain auditory nerve fibers. Those fibers connect to coincidence-detecting neurons. Different delays in connections from the two ears lead to coincidence for different ITDs, thus making these coincidence-detecting neurons selective for different angles to the sound source.

Jeffress' model has been extremely successful, although neurophysiological evidence is scarce (because the MSO apparently is hard to study).

Jeffress' model predicts a spatial map of ITDs in the MSO.

Jeffress' model predicts a spatial map of ITDs in the MSO. Recent evidence seems to suggest that this map indeed exists.