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대뇌 질환에 있어서 안구운동 반응

Title
 대뇌 질환에 있어서 안구운동 반응 
Other Titles
 Optokinetic response in the cerebral lesions 
Issue Date
1973
Publisher
 연세대학교 대학원 
Description
의학과/석사
Abstract
[한글] OPTOKINETIC RESPONSE IN THE CEREBRAL LESIONS Joong Uhn Choi Department of Medical Science The Graduate School Yonsei University (Directed by professor Hun Jae Lee, M.D.) Nystagmus is an involuntary, rhythmic, to and fro oscillation of the eyes. Such ocular movements may be easily elicited in the normal individuals by a series of moving target before the eyes. This physiologic reflex is known as optokinetic nystagmus. This phenomenon was first observed by Purkinje in 1825 while watching a crowed at a cavalry parade in Vienna. It is generally known that the optokinetic responses are disturbed in parietal lobe lesions. Also such a lesion manifests a visual field defect. However authors have found that the prediction of a disturbance in these responses in some cases of parietal lobe lesion has not always been borne out. As a control group, one hundred healthy adults were examined and all of them showed normal symmetric optokinetic responses. In this study, 17 cases of cerebral paragonimiasis which predilects to localize in the lower part of the posterior parietal lobe, 28 cases of brain tumor, 11 cases of head injury, 3 cases of A-V malformation, 1 case of cerebral thrombosis, 3 cases of brain abscess, 1 case of cysticercosis, and 1 case of abnormal calcification were observed for optokinetic nystagmes with correlation to the location of lesion and the visual field defect. It is this author's suggestions that the optokinetic response is most likely to be disturbed in lesions involving the lower part of the posterior parietal or paritoccipital lobe where the optic radiation and efferent optomotor pathway is also easily damaged. Abnormalities in the optokinetic response are not dependent on involvement of the visual pathway and also the response does not necessarily depend on the continuity of the association pathways between the occipital and frontal cortices. it seems that unless a cortical lesion involving the optomotor area is large enough in size, the optokinetic response can not be disturbed.
[영문] Nystagmus is an involuntary, rhythmic, to and fro oscillation of the eyes. Such ocular movements may be easily elicited in the normal individuals by a series of moving target before the eyes. This physiologic reflex is known as optokinetic nystagmus. This phenomenon was first observed by Purkinje in 1825 while watching a crowed at a cavalry parade in Vienna. It is generally known that the optokinetic responses are disturbed in parietal lobe lesions. Also such a lesion manifests a visual field defect. However authors have found that the prediction of a disturbance in these responses in some cases of parietal lobe lesion has not always been borne out. As a control group, one hundred healthy adults were examined and all of them showed normal symmetric optokinetic responses. In this study, 17 cases of cerebral paragonimiasis which predilects to localize in the lower part of the posterior parietal lobe, 28 cases of brain tumor, 11 cases of head injury, 3 cases of A-V malformation, 1 case of cerebral thrombosis, 3 cases of brain abscess, 1 case of cysticercosis, and 1 case of abnormal calcification were observed for optokinetic nystagmes with correlation to the location of lesion and the visual field defect. It is this author's suggestions that the optokinetic response is most likely to be disturbed in lesions involving the lower part of the posterior parietal or paritoccipital lobe where the optic radiation and efferent optomotor pathway is also easily damaged. Abnormalities in the optokinetic response are not dependent on involvement of the visual pathway and also the response does not necessarily depend on the continuity of the association pathways between the occipital and frontal cortices. it seems that unless a cortical lesion involving the optomotor area is large enough in size, the optokinetic response can not be disturbed.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/117252
Appears in Collections:
2. 학위논문 > 1. College of Medicine (의과대학) > 석사
Yonsei Authors
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