2005 Fiscal Year Final Research Report Summary
Study of face recognition in multiply handicapped persons using face-specific ERPs.
| Project/Area Number |
15330151
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Clinical psychology
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| Research Institution | Kibi International University |
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Principal Investigator |
KONISHI Kenzo Kibi International University, Faculty of Social Welfare, Professor, 社会福祉学部, 教授 (60068583)
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| Co-Investigator(Kenkyū-buntansha) |
OKITA Tsunetaka Aichi Shukutoku University, Faculty of Communication, Professor, コミュニケーション学部, 教授 (70068542)
HIKAMI Koji Kibi International University, Faculty of Social Welfare, Assistant Professor, 社会福祉学部, 助教授 (40282313)
YAMAMURA Takeshi Kawasaki University of Medical Welfare, Faculty of Medical Welfare, Professor, 医療福祉学部, 教授 (90240077)
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| Project Period (FY) |
2003 – 2005
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| Keywords | Event Related Brain Potential / Face recognition / Disabled person |
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| Research Abstract |
It is presumed that multiply handicapped persons have some disorders in the function for recognizing the human face. From this view point, we attempted to investigate the cognitive processes in multiply handicapped persons using face specific ERPs.
54 multiply handicapped persons were used for the subjects. Five kinds of stimuli, (1)a photograph of the face of unknown person, (2)a photograph of the face of nurse or doctor etc. who spend long time with subject' in daily life, (3)a photograph of the face of a dog, (4)a photograph of a round wall clock and (5)a photograph of a star mark, were presented on a monitor screen, six times for each, in a random order. Only star mark was presented with pink color, for making subjects to pay attention.
EEG were recorded from scalp electrodes at Fz,Cz,Pz,T5 and T6 sites. Two ERP components, P170 which is sensitive for face stimuli and P300 which is elicited by the deviated stimuli from context, were investigated.
Using "Ohshima classification scale",
… More
subjects were classified in terms of intelligence level. P170 showed larger amplitudes in the subjects who have less intelligence deficits. In contrast, P300 component was observed even in the lower intelligence subject.
Relations between appearance of these components and mental ages of subjects were also analyzed. Consistent relations between appearance of P170 and mental age could not be observed. The appearance of P300 was not related with the degree of mental age.
The degree of response (responsibility) of the subjects in daily life were classified in three degrees based upon the judgment of hospital staffs. The amplitudes of P 170 were larger in the higher responsibility group than in the lower responsibility group.
Cognitive processes of multiply handicapped persons evaluated with ERPs (especially face specific P170)were related closely to the degrees of responsibility in daily life. It was suggested that the observations in daily life are important for the evaluation of the multiply handicapped persons, together with using other standard evaluation tests Less
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