This research was supported by the Academy of Finland, the Jenny and Antti Wihuri Foundation, the Emil Aaltonen Foundation, and the Finnish Cultural Foundation.
Processing of complex sounds in the human auditory cortex as revealed by magnetic brain responses
Article first published online: 30 JAN 2007
Volume 33, Issue 4, pages 369–375, July 1996
How to Cite
ALHO, K., TERVANIEMI, M., HUOTILAINEN, M., LAVIKAINEN, J., TIITINEN, H., ILMONIEMI, R. J., KNUUTILA, J. and NÄÄTÄNEN, R. (1996), Processing of complex sounds in the human auditory cortex as revealed by magnetic brain responses. Psychophysiology, 33: 369–375. doi: 10.1111/j.1469-8986.1996.tb01061.x
We are grateful to Robert T. Knight, Patrick May, Göte Nyman, Jukka Saarinen, and Veijo Virsu for their constructive comments during the preparation of this manuscript.
- Issue published online: 30 JAN 2007
- Article first published online: 30 JAN 2007
- (Received January 3, 1995; Accepted July 3, 1995)
- Complex sounds;
- Mismatch negativity;
- Audtory cortex
Processing of simple and complex sounds in the human brain was compared by recording extracranial magnetic mismatch responses (MMNm; the magnetic counterpart of the mismatch negativity, or MMN) to frequency changes in these sounds. Generator sources, modeled as equivalent current dipoles (ECDs), of MMNm responses to a change in one frequency element of complex sounds (a chord and a serial tone pattern) were located in supratemporal auditory cortex, on average, 10 mm medially to the source of an MMNm elicited by an identical frequency change in a simple tone. These results suggest that at least partially different supratemporal neuron populations are invovled in processing changes in simple and complex sounds and that sensory-memory representations for these sounds may be located in different fields of the auditory cortex.