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[Vol.37 No.4 contents]
Japanese/English
Full Text of this Articlein Japanese PDF (1170K) |
| ArticleTitle | The mechanisms of the impairment of auditory pointing tasks in a patient with aphasia caused by the damage in the left frontal lobe-consideration based on the tasks that modified stimulus presentation condition- |
| Language | J |
| AuthorList | Yuki Takakura1), Mika Otsuki1)2), Yoshitsugu Nakagawa3), Shunichi Sugihara4) |
| Affiliation |
1)Department of Emergent Neurocognition, Faculty of Health Sciences, Hokkaido University 2)Faculty of Health Sciences, Hokkaido University 3)Department of Communication Disorders, School of Rehabilitation Science, Health Sciences University of Hokkaido 4)Department of Rehabilitation, Sapporo Shuyukai Hospital |
| Publication | Japanese Journal of Neuropsychology: 37 (4), 291-302, 2021 |
| Received | Nov 22, 2018 |
| Accepted | Sep 10, 2021 |
| Abstract | We investigated a patient with a characteristic impairment in auditory pointing tasks involving pointing to an illustration of a target word. The patient was a 67-year-old right-handed male native Japanese speaker who was employed as a cleaning staff. Brain MRI and single-photon emission computed tomography (SPECT) demonstrated restricted lesions in the left frontal lobe, basal ganglia, and insula. Standardized intelligence examinations revealed that the patient's performance was within the normal range. Furthermore, the results of the auditory verbal comprehension tasks in which the patient used "yes" or "no" responses in Western Aphasia Battery (WAB) were preserved, and there were almost no difficulties in listening to daily conversations. However, the performance declines in auditory pointing tasks were severe, contrary to expectations based on the clinical assessment of his daily activities. Most notably, this patient showed improved results in pointing tasks when the illustrations used for pointing were presented after an auditory presentation of the target word. The results of the modified auditory pointing tasks revealed that the patient tended to show difficulties when he was not only visually but also auditorily exposed to the information regarding non-target words that are semantically related to the target word before the introduction of the target word. We conclude that the patient cannot simultaneously suppress the information related to non-target words and activate the information regarding the target word. |
| Keywords | aphasia, auditory verbal comprehension, frontal lobe, pointing task, inhibition |
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