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  • Title: [Postictal aphasia and its generating mechanism in 3 patients with localization-related epilepsy].
    Author: Kudo T, Funakoshi A, Tanaka M, Matsuda K, Inoue Y, Yagi K, Seino M.
    Journal: Seishin Shinkeigaku Zasshi; 1993; 95(2):125-50. PubMed ID: 7685919.
    Abstract:
    Semiology of postictal aphasia as well as its generating mechanism involving both the epileptogenic zone and language area has not yet been sufficiently elucidated. Therefore, postictal aphasias were studied in 3 patients with localization-related epilepsy. Postictal motor aphasia was observed in a patient (patient 1) with frontal lobe epilepsy whose recovery of language function progressed from loss of language function, to Broca's aphasia, and eventually to poor spontaneous speech. Postictal sensory aphasia was observed in 2 patients (patient 2 and 3) with temporal lobe epilepsy whose recovery of language function progressed from loss of language function, to jargon, and eventually to circumlocutory anomic speech. Both patient 2 and 3 did not show fluent speech. Seizure manifestations, EEG, IMP-SPECT and MRI indicated that epileptogenic zones were in the left frontal lobe including Broca's area in patient 1, the mesial part of the left temporal lobe in patient 2, and the middle and posterior part of the left temporal lobe including Wernicke's area in patient 3. A postictal verbal dichotic listening test showed the reduction of correct responses by right ear in the patient 3. Postictal auditory verbal learning tests showed the impairment of verbal memorization in patient 2 and 3. The impairment of verbal memorization was particularly marked in patient 2. These results suggest that 1) the characteristics of postictal motor and sensory aphasia are clearly elucidated by analyzing the sequence of recovery from postictal language dysfunction, 2) postictal aphasia is generated by the epileptogenic zone involving the language area or the ictal discharges propagating to the language area, and 3) not only the disturbance of language function, but also the impairment of verbal memorization seems to participate in the disturbance of repeating and understanding sentences in the patient with postictal sensory aphasia.
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