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389 results on '"Yamadori, Atsushi"'

6. Hemispheric asymmetry in a perceptual priming task: evidence from patients with unilateral brain damage

Author

Tsukiura, Takashi, Fujii, Toshikatsu, and Yamadori, Atsushi

Subjects
Brain damage -- Research, Priming (Psychology) -- Physiological aspects, Perceptual-motor processes -- Research, Nonverbal communication -- Research, Health, Psychology and mental health
Abstract

The present study examined the relationship between unilateral brain damage and the effect of nonverbal perceptual priming using a picture-fragment completion task. Subjects consisted of 11 left brain-damaged patients, 8 right brain-damaged patients, and 10 healthy normal controls. The mean score of normal controls was significantly higher than those of left and right brain-damaged patients. Although there were significant effects of priming in all the groups, a significant difference in amplitude of priming effects was found only between right brain-damaged patients and normal controls. The correlation between amount of fragmentation at which there was identification and priming effect was not significant. We conclude that the right hemisphere is more involved in perceptual priming of form than is the left hemisphere, and form-dependent processing in the perceptual priming task has an asymmetrical distribution in the right and left hemispheres.

Published
1999

10. A normative community-based study of Mini-Mental State in elderly adults: the effect of age and educational level

Author

Ishizaki, Junichi, Meguro, Kenichi, Ambo, Hideo, Shimada, Masumi, Yamaguchi, Satoshi, Hayasaka, Chika, Komatsu, Hiroshi, Sekita, Yasuyoshi, and Yamadori, Atsushi

Subjects
Aged -- Psychological aspects, Cognition in old age -- Research, Japanese -- Psychological aspects, Age and intelligence -- Research, Ability, Influence of age on -- Research, Health, Psychology and mental health, Seniors
Abstract

We investigated community-based data of the Mini-Mental State Examination (MMSE) scores of elderly residents along with the effects of age and educational level. MMSE was planned for all residents over 65 years of age in a town in northern Japan. The number of elders who took the MMSE was 2,266 (90%). The score significantly declined with age and lower educational level, although no effect of sex was apparent. For the MMSE subitems, all the values except for that of naming showed effects of both age and educational level. Those screened by MMSE who fell in the range of cognitive impairment (

Published
1998

40. A 5-Year Retrospective Examination of Cognitive Screening Test Stages in Normal Older Adults and Patients With Alzheimer's Disease: The Tajiri Project

Author

Meguro, Kenichi, Shimada, Masumi, Yamaguchi, Satoshi, Ishizaki, Junichi, Yamadori, Atsushi, and Sekita, Yasuyoshi

Subjects
Alzheimer's disease -- Research, Cognition in old age -- Research, Health, Psychology and mental health, Seniors
Abstract

One conception of aging and cognitive deterioration is that cognitive decline becomes common with age, and dementia may be regarded as one extreme of the continuum. An alternative conception is that the cognitive process is spared by the aging process itself and that cognitive functioning of normal older adults and those with slight cognitive impairment, a CDR (Clinical Dementia Rating) score of 0.5 (suspected dementia), should be different. We examined changes in the screening test performances of 170 older adults over a 5-year period and found the following: (a) The CDR 0 (normal) participants did not show remarkable changes even in the older groups and (b) the subitems of orientation, memory, and so forth were useful for distinguishing normal older adults from early Alzheimer's disease patients. The results support the idea that dementia is better conceptualized as an age-related than as an 'aging-related' disorder and that a CDR score of 0.5 should be considered very mild Alzheimer's disease.

Published
2001

41. Hyperlalia: A Right Cerebral Hemisphere Syndrome

Author

Yamadori, Atsushi, Osumi, Yukio, Tabuchi, Masayasu, Mori, Etsuro, Yoshida, Takashi, Ohkawa, Shingo, and Yoneda, Yukihiro

Subjects
Neuropsychology and Physiological Psychology, Neurology, Neurosciences. Biological psychiatry. Neuropsychiatry, Neurology (clinical), General Medicine, RC321-571
Abstract

We describe a new right hemispheric behavioural syndrome for which we propose the name “hyperlalia”. In a typical case an apparently unconcerned and expressionless patient is easily prompted to remarkable volubility with a content which is loose and incoherent. The voice is low and monotonous. All the lesions confirmed by computed tomography of the brain overlapped in the perisylvian area in the territory of the right middle cerebral artery. Loss of a subtle balance between the left hemispheric speech area and the corresponding area in the right hemisphere caused by acute damage of the right perisylvian area may have resulted in disinhibition of the speech function. Similarities and dissimilarities with the known pathology of talkativeness are also discussed.

Published
1990

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