Neuromagnetic responses of the human auditory cortex to short frequency glides

Mikko Sams*, Risto Näätänen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

36 Citations (Scopus)


Neuromagnetic responses were recorded to 33-ms frequency-glide tones with a 7-channel SQUID gradiometer. Ninety per cent of the tones were of rising/falling frequency and 10% otherwise similar tones but presented backwards, i.e. comparable falling/rising frequency glides. The infrequent stimuli elicited a specific response, the mismatch field (MMF), whose equivalent source suggested a generation in the supratemporal auditory cortex. Responses to rising and falling infrequent glides showed no consistent asymmetry. The MMF amplitude correlated positively with the glide magnitude. It is suggested that the generation of MMF to changes in the direction of frequency glides involves neuronal networks tuned to frequency glides.

Original languageEnglish
Pages (from-to)43-46
Number of pages4
JournalNeuroscience Letters
Issue number1-2
Publication statusPublished - 2 Jan 1991
MoE publication typeA1 Journal article-refereed


  • Audition
  • Auditory cortex
  • Evoked responses
  • Frequency transition
  • MEG
  • Neuromagnetism
  • Speech perception


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