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Mechanisms for detecting auditory temporal and spectral deviations operate over similar time windows but are divided differently between the two hemispheres.
Neuroimage. 2006 Aug 01; 32(1):275-82.N

Abstract

In order to keep track of potentially relevant information in the acoustic environment, the human brain processes sounds to a high extent even when they are not attended: it extracts basic features, encodes regularities, and detects deviances. Here, we deliver evidence that the initial 300 ms of a sound contribute more to this preattentive processing than the sound's later parts. We directly compared the influence of the temporal distance relative to sound onset on the processing of the sound's duration and frequency information. The mismatch negativity (MMN), an event-related potential indicator for preattentive feature encoding and deviance detection, was measured for infrequent duration deviants and frequency modulation deviants. The onset of either deviancy was at 100, 200, 300, or 400 ms relative to sound onset. MMN was only elicited for deviations occurring within the first 300 ms after sound onset for both types of deviants. Its neural sources were localized in supra-temporal cortices with source current density analyses (SCD) and variable resolution electromagnetic tomography (VARETA), revealing a right-hemispheric preponderance for frequency modulations but not for duration shortenings. This suggests that preattentive deviance detection is based upon partly diverging functional memory registers for temporal and dynamic spectral information. The influence of temporal distance on MMN in both conditions supports the view that temporal and spectral sound properties are integrated into an auditory object representation prior to preattentive deviance detection. Importantly, the decline of MMN to unattended sounds with larger temporal distance suggests that parts beyond 300 ms are less important for preattentive auditory object representation.

Authors+Show Affiliations

Kognitive einschl. Biologische Psychologie, Institut für Psychologie I, Universität Leipzig, Seeburgstrasse 14-20, 04103 Leipzig, Germany. grimms@uni-leipzig.deNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16651011

Citation

Grimm, Sabine, et al. "Mechanisms for Detecting Auditory Temporal and Spectral Deviations Operate Over Similar Time Windows but Are Divided Differently Between the Two Hemispheres." NeuroImage, vol. 32, no. 1, 2006, pp. 275-82.
Grimm S, Roeber U, Trujillo-Barreto NJ, et al. Mechanisms for detecting auditory temporal and spectral deviations operate over similar time windows but are divided differently between the two hemispheres. Neuroimage. 2006;32(1):275-82.
Grimm, S., Roeber, U., Trujillo-Barreto, N. J., & Schröger, E. (2006). Mechanisms for detecting auditory temporal and spectral deviations operate over similar time windows but are divided differently between the two hemispheres. NeuroImage, 32(1), 275-82.
Grimm S, et al. Mechanisms for Detecting Auditory Temporal and Spectral Deviations Operate Over Similar Time Windows but Are Divided Differently Between the Two Hemispheres. Neuroimage. 2006 Aug 1;32(1):275-82. PubMed PMID: 16651011.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Mechanisms for detecting auditory temporal and spectral deviations operate over similar time windows but are divided differently between the two hemispheres. AU - Grimm,Sabine, AU - Roeber,Urte, AU - Trujillo-Barreto,Nelson J, AU - Schröger,Erich, Y1 - 2006/05/02/ PY - 2005/11/02/received PY - 2006/03/01/revised PY - 2006/03/10/accepted PY - 2006/5/3/pubmed PY - 2006/9/16/medline PY - 2006/5/3/entrez SP - 275 EP - 82 JF - NeuroImage JO - Neuroimage VL - 32 IS - 1 N2 - In order to keep track of potentially relevant information in the acoustic environment, the human brain processes sounds to a high extent even when they are not attended: it extracts basic features, encodes regularities, and detects deviances. Here, we deliver evidence that the initial 300 ms of a sound contribute more to this preattentive processing than the sound's later parts. We directly compared the influence of the temporal distance relative to sound onset on the processing of the sound's duration and frequency information. The mismatch negativity (MMN), an event-related potential indicator for preattentive feature encoding and deviance detection, was measured for infrequent duration deviants and frequency modulation deviants. The onset of either deviancy was at 100, 200, 300, or 400 ms relative to sound onset. MMN was only elicited for deviations occurring within the first 300 ms after sound onset for both types of deviants. Its neural sources were localized in supra-temporal cortices with source current density analyses (SCD) and variable resolution electromagnetic tomography (VARETA), revealing a right-hemispheric preponderance for frequency modulations but not for duration shortenings. This suggests that preattentive deviance detection is based upon partly diverging functional memory registers for temporal and dynamic spectral information. The influence of temporal distance on MMN in both conditions supports the view that temporal and spectral sound properties are integrated into an auditory object representation prior to preattentive deviance detection. Importantly, the decline of MMN to unattended sounds with larger temporal distance suggests that parts beyond 300 ms are less important for preattentive auditory object representation. SN - 1053-8119 UR - https://www.unboundmedicine.com/medline/citation/16651011/Mechanisms_for_detecting_auditory_temporal_and_spectral_deviations_operate_over_similar_time_windows_but_are_divided_differently_between_the_two_hemispheres_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1053-8119(06)00190-X DB - PRIME DP - Unbound Medicine ER -