A functional magnetic resonance imaging study of the role of left posterior superior temporal gyrus in speech production: implications for the explanation of conduction aphasia
G. Hickok et al., A functional magnetic resonance imaging study of the role of left posterior superior temporal gyrus in speech production: implications for the explanation of conduction aphasia, NEUROSCI L, 287(2), 2000, pp. 156-160
Conduction aphasia, characterized by good auditory comprehension and fluent
but disordered speech production, is classically viewed as a disconnection
syndrome. We review recent evidence which suggests that at least one form
of conduction aphasia results from damage to cortical fields in the left po
sterior superior temporal gyrus which participate not only in speech percep
tion, but also in phonemic aspects of speech production. As a test of this
hypothesis, we carried out a 4T functional magnetic resonance imaging study
in which subjects named visually presented objects sub-vocally. Group-base
d analyses showed that a majority of participants showed activation in two
regions on the dorsal portion of the left posterior superior temporal gyrus
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