Spatial asymmetries of auditory event-synthesis in humans

Leon Y. Deouell, Christina M. Karns, Tamara B. Harrison, Robert T. Knight

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We used the mismatch negativity event-related potential to examine how spatial location and feature variation affect the capacity of the auditory system to automatically respond to pairs of rapid (180 ms apart) acoustic changes within a single tone. When a tone first deviated from a standard tone in source location and then in its duration, we found independent responses to both deviations for right but not left field stimuli. In contrast, when the first deviation was in pitch and the second in duration, only the first deviation elicited a response, regardless of presentation side. These results suggest that information from either side of space is asymmetrically processed even in a free-field, and that the extent of the temporal window of integration is not a fixed property of the auditory system.

Original languageAmerican English
Pages (from-to)171-174
Number of pages4
JournalNeuroscience Letters
Volume335
Issue number3
DOIs
StatePublished - 2 Jan 2003
Externally publishedYes

Bibliographical note

Funding Information:
The study was supported by NINDS grant 21135.

Keywords

  • Auditory system
  • Event processing
  • Event-related potentials
  • Hemispheric asymmetry
  • Mismatch negativity
  • Temporal window of integration

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