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The production and perception of pitch and rhythm were tested in patients with acquired unilateral left-hemisphere (LH) lesions (and subsequent motor dysphasia, n = 13), patients with unilateral right-hemisphere (RH) lesions (n = 14), and normal age-matched controls. While the LH dysphasic subjects were not generally impaired on the production or perception of pitch, they were grossly impaired on the production and perception of rhythm. The RH subjects, in contrast, were impaired on measures of pitch perception and production, including the discrimination and production of single notes and of melodies. It is concluded that the two hemispheres differ in their specialization for the perception and production of pitch and rhythm.

Original publication




Journal article


Brain Lang

Publication Date





47 - 65


Adult, Aged, Aged, 80 and over, Aphasia, Broca, Brain Mapping, Cerebral Cortex, Dominance, Cerebral, Female, Humans, Male, Middle Aged, Music, Pitch Perception, Sound Spectrography, Stroke, Time Perception, Voice Quality