Tonotypic cortical representation in man (case report).

Cortical stimulation--evoked perception of tones differing in pitch suggests that the perception of pitch may be discretely organized in the human auditory parakoniocortex. Findings, obtained from a neurosurgical patient undergoing temporal lobectomy, are discussed with reference to anatomical and functional considerations of the auditory parakoniocortex in humans. These tonotypic findings are potentially significant since, as previously reported, auditory sensations have not been analyzed in relation to perceptual categories of pitch.