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[Vol.18 No.2 contents]
Japanese/English
Full Text of this Articlein Japanese PDF (164K) |
| ArticleTitle | Procedural memory in semantic dementia: relationship between semantic memory and procedural memory |
| Language | J |
| AuthorList | Hiroko Kawai-Mochizuki1), Satoshi Mochizuki1), Akira Midorikawa2), Mitsuru Kawamura3) |
| Affiliation |
1) Cognitive and behavioral Science Research Group, Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo 2) Department of Psychology, Chuo University Faculty of Literature 3) Department of Neurology, Showa University School of Medicine |
| Publication | Japanese Journal of Neuropsychology: 18 (2), 76-83, 2002 |
| Received | Jun 11, 2001 |
| Accepted | Nov 14, 2001 |
| Abstract |
The skills such as riding a bicycle or using chopsticks are acquired with trial and error, and we would become to do them smoothly. Such skills can be called procedural memory.Snowden et al. (1989) reported that patients with semantic dementia could not use tools which have been well-acquired. There is a possibility that semantic memory would influence procedural memory. We investigated procedural memory in a patient with semantic dementia (patient MK). The purpose of this study was to clarify the relationship between semantic memory and procedural memory. First, we examined tools use as well-acquired procedural memory, which have been acquired before onset. MK could only use the familiar tools which she has normally used (for example, chopsticks and a spoon). On the other hand, she could not use the unfamiliar tools which were not used frequently (for example, a hammer and a screwdriver). Secondary, three types of procedural memory task were executed so as to examine new skills acquisition and retention. She was able to acquire and retain any types of new skills. But her first performance time increased clearly in the retention test. We thought that the patient with semantic dementia showed difficulty to retrieve the procedural memory that have not used recently. We concluded that semantic memory is important to retrieve the procedural memory smoothly, which has not used for a long time. |
| Keywords | semantic dementia, semantic memory, procedural memory, object use |
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