Psychophysiological Basis of Successful Recognition of Emotional Speech in Normal Conditions and Pathology

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The experimental-theoretical aims of the present study were to investigate the ability of humans to evaluate emotions in speech in relation to individual EEG characteristics and to compare clinical and electrophysiological data. Profound impairments to the recognition of emotions in speech were seen in subjects with lesions to the right temporal area, while the most significant defects in recognition were associated with frontal-temporal focal lesions. EEG studies of two groups of subjects, with high and low levels of recognition of emotions in speech, showed high levels of activation of the posterior temporal area of the right hemisphere and anterior leads of the left hemisphere in subjects with poor discrimination of the emotional tone of speech. Clinical and electrophysiological data lead to the conclusion that the recognition of emotions in speech may involve not only the temporal area of the right hemisphere, but also the speech centers in the left hemisphere.

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