著者

澤田 徹

出版者

一般社団法人 国立医療学会

雑誌

医療 (ISSN:00211699)

巻号頁・発行日

vol.37, no.2, pp.143-148, 1983-02-20 (Released:2011-10-19)

参考文献数

8

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脳循環障害における「めまい」について, その種類と発現頻度を検討し, 脳循環の立場からその発現機序に考察を加えた.国立循環器病センターSCUへ収容された, 脳卒中新鮮例547例中, めまいを訴えたものはvertigo 18例, dizziness 21例の計39例(7.1%)であつた. その内訳をみると, vertigoは脳幹および小脳の血管障害における出現頻度が高く, とくに小脳出血では6例中5例(83.3%)がvertigoを主訴としており, 診断的意義が大きい. 一方, 大脳半球の血管障害では発作時めまいを訴えるものは少なく, 脳出血1.5%, 脳梗塞3.3%であつた.N2O法による脳血流測定法では, 椎骨脳底動脈系の血管障害では, めまいの有無により脳血流量に差はなかつたが, 大脳半球の血管障害ではめまい出現例で有意の脳血流低下が認められた. このことは, vertigoは局所的な循環障害に起因し, dizzinessは全脳血流低下と関係が深いことを示唆する.

著者

元村 直靖 豊田 勝弘 堺 俊明 井上 典子 澤田 徹

出版者

日本失語症学会 (現 一般社団法人 日本高次脳機能障害学会)

雑誌

失語症研究 (ISSN:02859513)

巻号頁・発行日

vol.6, no.2, pp.1056-1064, 1986 (Released:2006-08-04)

参考文献数

26

被引用文献数

2 2

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The incidence and nature of verbal perseveration occuring after cerebrovascular disease were investigated. Out of 59 cases, verbal perseveration was found in 21 of 23 aphasic patients. The perseverative errors were classified into two types;clonic and intentional perseveration. Furthermore, intentional perseveration was divided into two types;immediate and delayed type according to temporal relation of a response to the original stimulus.    Clonic perseveration was found in 5 cases;one in naming and repetition tasks, 5 in series tasks. Intentional perseveration was found in 19 cases ; 17 in naming, 10 in repetition, and 19 in series teasks. There was no correlation between the duration of cerebrovascular disease and perseveration. On CT findings the lesions of frontal lobe, temporal lobe, parietal lobe, thalamus, and basal ganglia were detected. And there were tendencies that the larger the lesion was, the more frequent verbal perseveration was. The hypotheses of mechanism for producing perseveration were reviewed and verbal perseveration was supposed to be related with the disinhibition of memory trace.