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[Vol.32 No.3 contents]
Japanese/English
Full Text of this Articlein Japanese PDF (1025K) |
| ArticleTitle | A case of reduplication paramnesia after a head injury |
| Language | J |
| AuthorList | Tetsuo Kashibayashi1), Hiroaki Kazui2), Yoshiko Wada1), Keiko Nomura1), Kazumasa Yokoyama1) |
| Affiliation |
1)Hyogo Prefectural Rehabilitation Hospital at Nishi-Harima 2)Division of Psychiatry, Course of Internal Medicine, Osaka University, Graduate School of Medicine |
| Publication | Japanese Journal of Neuropsychology: 32 (3), 239-247, 2016 |
| Received | Jun 12, 2015 |
| Accepted | Sep 10, 2015 |
| Abstract | We report a patient with a head injury showing anterograde and retrograde amnesia and frontal lobe dysfunction. Anterograde amnesia improved within 3 months, but the patient's locational disorientation and frontal lobe dysfunction persisted. He was repeatedly corrected by the exact location, and then he became confused and experienced reduplication paramnesia (RP). Brain MRI revealed the contusion in the left superior frontal gyrus and the right inferior frontal gyrus. In addition to these frontal lobe lesions, IMP-SPECT showed decreased cerebral blood flow (CBF) in the posterior cingulate cortex (PCC). After his RP improved the decreased CBF in these areas recovered in his IMP-SPECT images. It suggested that these areas were involved in the manifestation of RP. These findings indicated that dysfunction of the medial prefrontal cortex and PCC might play an important role in the development of RP. |
| Keywords | reduplicative paramnesia, posterior cingulate cortex, frontal lobe dysfunction, head injury, top-down modulation |
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