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Spatial location is accurately tracked by human auditory sensory memory: evidence from the mismatch negativity.
Eur J Neurosci. 2006 Sep; 24(5):1488-94.EJ

Abstract

The nature of spatial representation in human auditory cortex remains elusive. In particular, although humans can discriminate the locations of sounds as close as 1-10 degrees apart, such resolution has not been shown in auditory cortex of humans or animals. We used the mismatch negativity (MMN) event related brain potential to measure the neural response to spatial change in humans in narrow 10 degree spatial steps. Twelve participants were tested using a dense array EEG setup while watching a silent movie and ignoring the sounds. The MMN was reliably elicited by infrequent changes of spatial location of sounds in free field. The MMN amplitude was linearly related to the degree of spatial change with a resolution of at least 10 degrees. These electrophysiological responses occurred within a window of 100-200 milliseconds from stimulus onset, and were localized to the posterior superior temporal gyrus. We conclude that azimuthal spatial displacement is rapidly, accurately and automatically represented in auditory sensory memory in humans, at the level of the auditory cortex.

Authors+Show Affiliations

Department of Psychology, The Hebrew University of Jerusalem, Jerusalem, 91905, Israel. msleon@hji.ac.ilNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16987229

Citation

Deouell, Leon Y., et al. "Spatial Location Is Accurately Tracked By Human Auditory Sensory Memory: Evidence From the Mismatch Negativity." The European Journal of Neuroscience, vol. 24, no. 5, 2006, pp. 1488-94.
Deouell LY, Parnes A, Pickard N, et al. Spatial location is accurately tracked by human auditory sensory memory: evidence from the mismatch negativity. Eur J Neurosci. 2006;24(5):1488-94.
Deouell, L. Y., Parnes, A., Pickard, N., & Knight, R. T. (2006). Spatial location is accurately tracked by human auditory sensory memory: evidence from the mismatch negativity. The European Journal of Neuroscience, 24(5), 1488-94.
Deouell LY, et al. Spatial Location Is Accurately Tracked By Human Auditory Sensory Memory: Evidence From the Mismatch Negativity. Eur J Neurosci. 2006;24(5):1488-94. PubMed PMID: 16987229.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Spatial location is accurately tracked by human auditory sensory memory: evidence from the mismatch negativity. AU - Deouell,Leon Y, AU - Parnes,Ariel, AU - Pickard,Natasha, AU - Knight,Robert T, PY - 2006/9/22/pubmed PY - 2006/11/15/medline PY - 2006/9/22/entrez SP - 1488 EP - 94 JF - The European journal of neuroscience JO - Eur J Neurosci VL - 24 IS - 5 N2 - The nature of spatial representation in human auditory cortex remains elusive. In particular, although humans can discriminate the locations of sounds as close as 1-10 degrees apart, such resolution has not been shown in auditory cortex of humans or animals. We used the mismatch negativity (MMN) event related brain potential to measure the neural response to spatial change in humans in narrow 10 degree spatial steps. Twelve participants were tested using a dense array EEG setup while watching a silent movie and ignoring the sounds. The MMN was reliably elicited by infrequent changes of spatial location of sounds in free field. The MMN amplitude was linearly related to the degree of spatial change with a resolution of at least 10 degrees. These electrophysiological responses occurred within a window of 100-200 milliseconds from stimulus onset, and were localized to the posterior superior temporal gyrus. We conclude that azimuthal spatial displacement is rapidly, accurately and automatically represented in auditory sensory memory in humans, at the level of the auditory cortex. SN - 0953-816X UR - https://www.unboundmedicine.com/medline/citation/16987229/Spatial_location_is_accurately_tracked_by_human_auditory_sensory_memory:_evidence_from_the_mismatch_negativity_ L2 - https://doi.org/10.1111/j.1460-9568.2006.05025.x DB - PRIME DP - Unbound Medicine ER -