Tone perception deficits in Chinese-speaking Broca's aphasics

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Abstract
Recent studies have demonstrated some type of tone production problems following left hemisphere lesions in severely aphasic tone-language speakers. We studied the ability of Toisanese Chinese-speaking Broca's aphasics to comprehend lexical tone. Sets of monosyllabic words differing only by tone permitted comprehension testing via a word-picture matching task. The pattern of tone confusion in the aphasics was found to be an exaggeration of that experienced by the normal controls.