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Neurosci Lett. 1984 Sep 7;50(1-3):127-32.

Responses of the primary auditory cortex to pitch changes in a sequence of tone pips: neuromagnetic recordings in man.


Auditory evoked magnetic fields of the human brain were recorded with a four-channel 1st order gradiometer. Pitch deviance in a sequence of repetitive tone pips elicited magnetic evoked-response changes with a topography suggesting that a neuronal mismatch process to the deviant tones activates the primary auditory cortex.

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