Semantic Dementia Shows both Storage and Access Disorders of Semantic Memory
Objective. Previous studies have shown that some patients with semantic dementia (SD) have memory storage disorders, while others have access disorders. Here, we report three SD cases with both disorders. Methods. Ten pictures and ten words were prepared as visual stimuli to determine if the patient...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | Behavioural Neurology |
| Online Access: | http://dx.doi.org/10.1155/2014/508960 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832560155305181184 |
|---|---|
| author | Yumi Takahashi Kenichi Meguro Masahiro Nakatsuka Mari Kasai Kyoko Akanuma Satoshi Yamaguchi |
| author_facet | Yumi Takahashi Kenichi Meguro Masahiro Nakatsuka Mari Kasai Kyoko Akanuma Satoshi Yamaguchi |
| author_sort | Yumi Takahashi |
| collection | DOAJ |
| description | Objective. Previous studies have shown that some patients with semantic dementia (SD) have memory storage disorders, while others have access disorders. Here, we report three SD cases with both disorders. Methods. Ten pictures and ten words were prepared as visual stimuli to determine if the patients could correctly answer names and select pictures after hearing the names of items (Card Presentation Task, assessing memory storage disorder). In a second task, the viewing time was set at 20 or 300 msec (Momentary Presentation Task, evaluating memory access disorder) using items for which correct answers were given in the first task. The results were compared with those for 6 patients with Alzheimer’s disease (AD). Results. The SD patients had lower scores than the AD group for both tasks, suggesting both storage and access disorders. The AD group had almost perfect scores on the Card Presentation Task but showed impairment on the Momentary Presentation Task, although to a lesser extent than the SD cases. Conclusions. These results suggest that SD patients have both storage and access disorders and have more severe access disorder than patients with AD. |
| format | Article |
| id | doaj-art-092d7192d0014acbb64abdd962cbc8e8 |
| institution | Kabale University |
| issn | 0953-4180 1875-8584 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Behavioural Neurology |
| spelling | doaj-art-092d7192d0014acbb64abdd962cbc8e82025-02-03T01:28:16ZengWileyBehavioural Neurology0953-41801875-85842014-01-01201410.1155/2014/508960508960Semantic Dementia Shows both Storage and Access Disorders of Semantic MemoryYumi Takahashi0Kenichi Meguro1Masahiro Nakatsuka2Mari Kasai3Kyoko Akanuma4Satoshi Yamaguchi5Department of Geriatric Behavioral Neurology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, 980-8575 Sendai, JapanDepartment of Geriatric Behavioral Neurology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, 980-8575 Sendai, JapanDepartment of Geriatric Behavioral Neurology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, 980-8575 Sendai, JapanDepartment of Geriatric Behavioral Neurology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, 980-8575 Sendai, JapanDepartment of Geriatric Behavioral Neurology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, 980-8575 Sendai, JapanDepartment of Geriatric Behavioral Neurology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, 980-8575 Sendai, JapanObjective. Previous studies have shown that some patients with semantic dementia (SD) have memory storage disorders, while others have access disorders. Here, we report three SD cases with both disorders. Methods. Ten pictures and ten words were prepared as visual stimuli to determine if the patients could correctly answer names and select pictures after hearing the names of items (Card Presentation Task, assessing memory storage disorder). In a second task, the viewing time was set at 20 or 300 msec (Momentary Presentation Task, evaluating memory access disorder) using items for which correct answers were given in the first task. The results were compared with those for 6 patients with Alzheimer’s disease (AD). Results. The SD patients had lower scores than the AD group for both tasks, suggesting both storage and access disorders. The AD group had almost perfect scores on the Card Presentation Task but showed impairment on the Momentary Presentation Task, although to a lesser extent than the SD cases. Conclusions. These results suggest that SD patients have both storage and access disorders and have more severe access disorder than patients with AD.http://dx.doi.org/10.1155/2014/508960 |
| spellingShingle | Yumi Takahashi Kenichi Meguro Masahiro Nakatsuka Mari Kasai Kyoko Akanuma Satoshi Yamaguchi Semantic Dementia Shows both Storage and Access Disorders of Semantic Memory Behavioural Neurology |
| title | Semantic Dementia Shows both Storage and Access Disorders of Semantic Memory |
| title_full | Semantic Dementia Shows both Storage and Access Disorders of Semantic Memory |
| title_fullStr | Semantic Dementia Shows both Storage and Access Disorders of Semantic Memory |
| title_full_unstemmed | Semantic Dementia Shows both Storage and Access Disorders of Semantic Memory |
| title_short | Semantic Dementia Shows both Storage and Access Disorders of Semantic Memory |
| title_sort | semantic dementia shows both storage and access disorders of semantic memory |
| url | http://dx.doi.org/10.1155/2014/508960 |
| work_keys_str_mv | AT yumitakahashi semanticdementiashowsbothstorageandaccessdisordersofsemanticmemory AT kenichimeguro semanticdementiashowsbothstorageandaccessdisordersofsemanticmemory AT masahironakatsuka semanticdementiashowsbothstorageandaccessdisordersofsemanticmemory AT marikasai semanticdementiashowsbothstorageandaccessdisordersofsemanticmemory AT kyokoakanuma semanticdementiashowsbothstorageandaccessdisordersofsemanticmemory AT satoshiyamaguchi semanticdementiashowsbothstorageandaccessdisordersofsemanticmemory |