書誌事項
- タイトル別名
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- Primate Cerebellar Hemisphere and Voluntary Eye Movement Control
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The cerebellar hemispheres, which constitute the major portion of the primate cerebellum, are considered to be involved in voluntary movement control and cognitive functions. Unlike those of the flocculus-paraflocculus complex and vermal lobule VI/VII, the oculomotor functions of the hemispheres are not yet well known. We recently found a new eye movement area in the hemispheric lobule VI/VII (H-VI/VII) in macaque monkeys. Unilateral lesions of H-VI/VII decreased the velocities of smooth pursuit, and delayed the onset of smooth pursuit and saccades. No hypo- or hypermetria was observed in the saccade amplitudes. A 50% impairment of the adaptations of smooth pursuit velocities, examined by brief acceleration of the target velocity during smooth pursuit, was observed. These lesion effects were prominent in the eye movements directed to the lesioned side. No spontaneous or gaze nystagmic eye movements were observed in association with the H-VI/VII lesions. Based on the results of comparison of the mossy and climbing fiber input organizations among the flocculus-paraflocculus, vermal lobule VI/VII and H-VI/VII, we suggest that the H-VI/VII is a new member of the oculomotor cerebellum that mediates a different function from that of the flocculus, paraflocculus and vermis.
収録刊行物
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- Equilibrium Research
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Equilibrium Research 68 (3), 119-130, 2009
一般社団法人 日本めまい平衡医学会
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詳細情報 詳細情報について
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- CRID
- 1390282679927756544
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- NII論文ID
- 10026088126
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- NII書誌ID
- AN00001485
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- ISSN
- 1882577X
- 03855716
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可