Spatial receptive elds of human auditory cortical neurons revealed by neuromagnetic recordings

Authors

  • Nelli H. Salminen Department of Biomedical Engineering and Computational Science, Helsinki University of Technology, Helsinki, Finland; BioMag Laboratory, Hospital District of Helsinki and Uusimaa HUSLAB, Helsinki University Central Hospital, Helsinki, Finland
  • Hannu Tiitinen Department of Biomedical Engineering and Computational Science, Helsinki University of Technology, Helsinki, Finland; BioMag Laboratory, Hospital District of Helsinki and Uusimaa HUSLAB, Helsinki University Central Hospital, Helsinki, Finland
  • Patrick J. C. May Department of Biomedical Engineering and Computational Science, Helsinki University of Technology, Helsinki, Finland; BioMag Laboratory, Hospital District of Helsinki and Uusimaa HUSLAB, Helsinki University Central Hospital, Helsinki, Finland

Abstract

Previous work on the human auditory cortex has revealed areas specialized in spatial processing but how the neurons in these areas represent the location of a sound source remains unknown. We conducted magnetoencephalography (MEG) measurements to reveal the neural code of auditory space implemented by the human cortex. To this end, we used a stimulus-speci c adaptation paradigm where the attenuating effect of a preceding adaptor on the brain responses to a subsequent probe sound is used as a measure of neuronal spatial selectivity. Utilizing both interaural time difference (ITD) cues and realistic spatial sounds we obtained results consistent with a population rate code of horizontal sound source location whereby spatial receptive elds are wide and laterally centered.

References

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Additional Files

Published

2009-12-15

How to Cite

Salminen, N. H., Tiitinen, H., & May, P. J. C. (2009). Spatial receptive elds of human auditory cortical neurons revealed by neuromagnetic recordings. Proceedings of the International Symposium on Auditory and Audiological Research, 2, 57–60. Retrieved from https://proceedings.isaar.eu/index.php/isaarproc/article/view/2009-06

Issue

Vol. 2 (2009): Binaural Processing and Spatial Hearing

Section

2009/1. Physiological measures and models of binaural hearing

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