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The Lateral Superior Olive: A Functional Role in Sound Source Localization

Tollin, Daniel J.·2003·The Neuroscientist

Abstract

Sound location in azimuth is signaled by differences in the times of arrival (interaural time difference, ITDs) and the amplitudes (interaural level differences, ILDs) of the stimuli at the ears. Psychophysical studies have shown that low- and high-frequency sounds are localized based on ITDs and ILDs, respectively, suggesting that dual mechanisms mediate localization. The anatomical and physiological bases for this “duplex theory” of localization are found in the medial (MSO) and lateral (LSO) superior olives, two of the most peripheral sites in the ascending auditory pathway receiving inputs from both ears. The MSO and LSO are believed to be responsible for the initial encoding of ITDs and ILDs, respectively. Here the author focuses on ILDs as a cue to location and the role of the LSO in encoding ILDs. Evidence from disparate fields of study supports the hypothesis that the LSO is the initial ILD processor in the mammalian auditory system. NEUROSCIENTIST 9(2): 127–143, 2003.

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Metadata

Authors
Tollin, D. J.
Venue
The Neuroscientist
Published
2003-04
Volume
9
Issue
2
Pages
127-143
ISSN
  • 1073-8584 (ISSN-L)
  • 1089-4098
OpenAlex
W2007658601
Cited by
287
References
0
FWCI
1.85
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The Lateral Superior Olive: A Functional Role in Sound Source Localization. https://app.cochat.ai/papers/10.1177/1073858403252228
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Tollin, D. J. (2003). The Lateral Superior Olive: A Functional Role in Sound Source Localization. The Neuroscientist. https://doi.org/10.1177/1073858403252228

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