| Project/Area Number |
21650142
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Rehabilitation science/Welfare engineering
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| Research Institution | Tokai University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥2,280,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2009: ¥700,000 (Direct Cost: ¥700,000)
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| Keywords | リハビリテーション / 高次脳機能障害 / 注意障害 / 分配性注意 / 神経心理学的検査 / 評価 / 臨床検査 |
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| Research Abstract |
Attentional disturbance commonly occurs following brain injury. Patients with traumatic brain injury(TBI) sometimes complain of difficulties in doing two things at the same time. This symptom reflects a disturbance of divided attention(DA), one of the several types of attention defined. DA is a cognitive function involving the division of available and controlled processing capacity between several cognitive operations. DA impairment may be the most salient and commonly reported cognitive dysfunction following mild TBI. DA deficit, however, is sometimes overlooked during hospitalization. The author developed a new dual-task test(DT) for detecting DA. In this test, a subject simultaneously performs both a simple cancellation task and calculation(addition) by writing. In the cancellation task, an audio device plays aloud the numbers 1 to 19 in a random order, and the subject replies "Yes" whenever the target number "8" is presented. The task continues for 3 minutes, and the target number "8" is played 20 times. In the visual task, the subject calculates as many 4-digit figures as possible by writing for 3 minutes when the previous simple cancellation task completes. Analysis of normal subjects and patients with brain damage showed that the DT has high sensitivity(89%) and specificity(88%). The sensitivity was generally higher than those of sub-tests in the Clinical Assessment of Attention(CAT) developed in 2006 by the Japan Society for Higher Brain Dysfunction to evaluate deficit of generalized attention. These findings indicated usefulness of the DT.
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