Processing of novel sounds and frequency changes in the human auditory cortex: Magnetoencephalographic recordings

Kimmo Alho, István Winkler, Carles Escera, Minna Huotilainen, Juha Virtanen, Iiro P. Jääskeläinen, Eero Pekkonen, Risto J. Ilmoniemi

Research output: Contribution to journalArticle

257 Citations (Scopus)

Abstract

Whole-head magnetoencephalographic (MEG) responses to repeating standard tones and to infrequent slightly higher deviant tones and complex novel sounds were recorded together with event-related brain potentials (ERPs). Deviant tones and novel sounds elicited the mismatch negativity (MMN) component of the ERP and its MEG counterpart (MMNm) both when the auditory stimuli were attended to and when they were ignored. MMNm generators were located bilateral to the superior planes of the temporal lobes where preattentive auditory discrimination appears to occur. A subsequent positive P3a component was elicited by deviant tones and with a larger amplitude by novel sounds even when the sounds were to be ignored. Source localization for the MEG counterpart of P3a (P3am) suggested that the auditory cortex in the superior temporal plane is involved in the neural network of involuntary attention switching to changes in the acoustic environment.

Original languageEnglish
Pages (from-to)211-224
Number of pages14
JournalPsychophysiology
Volume35
Issue number2
DOIs
Publication statusPublished - Jan 1 1998

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Keywords

  • Attention
  • Auditory cortex
  • MEG
  • Mismatch negativity
  • Novel sounds
  • P3a

ASJC Scopus subject areas

  • Neuroscience(all)
  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Neurology
  • Endocrine and Autonomic Systems
  • Developmental Neuroscience
  • Cognitive Neuroscience
  • Biological Psychiatry

Cite this

Alho, K., Winkler, I., Escera, C., Huotilainen, M., Virtanen, J., Jääskeläinen, I. P., Pekkonen, E., & Ilmoniemi, R. J. (1998). Processing of novel sounds and frequency changes in the human auditory cortex: Magnetoencephalographic recordings. Psychophysiology, 35(2), 211-224. https://doi.org/10.1017/S004857729800211X