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Clinical Trial
. 1998 Sep;35(5):615-9.
doi: 10.1017/s0048577298000183.

Temporal window of integration of auditory information in the human brain

H Yabe  1 , M Tervaniemi, J Sinkkonen, M Huotilainen, R J Ilmoniemi, R Näätänen
Affiliations
Clinical Trial

Temporal window of integration of auditory information in the human brain

H Yabe et al. Psychophysiology. 1998 Sep.

Abstract

A deviation in the acoustic environment activates an automatic change-detection system based on a memory mechanism that builds a neural trace representing the preceding sounds. The present study revealed that the auditory-cortex mechanisms underlying this sensory memory integrate acoustic events over time, producing a perception of a unitary auditory event. We recorded magnetic responses (MMNm) to occasional stimulus omissions in trains of stimuli presented at a constant stimulus-onset asynchrony (SOA) that was, in different blocks, either shorter or longer in duration than the assumed length of the temporal window of integration. A definite MMNm was elicited by stimulus omission only with the three shortest SOAs used: 100, 125, and 150 ms, but not with 175 ms. Thus, 160-170 ms was estimated as the length of the temporal window used by the central auditory system in integrating successive auditory input into auditory event percepts.

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