Voluntary and vestibular eye movements in a case of lesion restricted to the anterior vermis cerebelli
Magnusson, M. LU
and Stromblad, L. G.
LU
(1989)
In Clinical Vision Sciences
4(1).
p.71-78
- Abstract
Lesions to the vermis cerebelli in man have been reported to produce dysmetric saccades, defective smooth pursuit, and spontaneous upbeat nystagmus. From animal experiments it has been suggested that only the posterior part of the cerebellar vermis is involved in the processing of eye movements. We report the case of a patient whose anterior vermis was resected due to metastasis of a colon adenocarcinoma, and whose posterior vermis was unaffected either by the lesion or by the surgery. Although slow phase velocity was reduced in horizontal optokinetic nystagmus, the patient exhibited no defects of horizontal and vertical saccades or of smooth pursuit, and had no vertical nystagmus; nor was the horizontal vestibular ocular reflex... (More)
Lesions to the vermis cerebelli in man have been reported to produce dysmetric saccades, defective smooth pursuit, and spontaneous upbeat nystagmus. From animal experiments it has been suggested that only the posterior part of the cerebellar vermis is involved in the processing of eye movements. We report the case of a patient whose anterior vermis was resected due to metastasis of a colon adenocarcinoma, and whose posterior vermis was unaffected either by the lesion or by the surgery. Although slow phase velocity was reduced in horizontal optokinetic nystagmus, the patient exhibited no defects of horizontal and vertical saccades or of smooth pursuit, and had no vertical nystagmus; nor was the horizontal vestibular ocular reflex affected as investigated in this study. The present findings suggest, firstly, that conclusions drawn from the findings of recent animal experiments may also be valid in man; and secondly, the defective eye movement occurring after lesion to the vermis cerebelli in humans is mainly due to lesioning of the posterior vermis.
(Less)
- author
- Magnusson, M.
LU
and Stromblad, L. G.
LU
- publishing date
- 1989
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Clinical Vision Sciences
- volume
- 4
- issue
- 1
- pages
- 71 - 78
- publisher
- Elsevier
- external identifiers
-
- scopus:0024522878
- ISSN
- 0887-6169
- language
- English
- LU publication?
- no
- id
- fe7dca07-437a-48db-a6f6-0adec81369fc
- date added to LUP
- 2024-07-13 22:24:04
- date last changed
- 2024-07-15 15:51:37
@article{fe7dca07-437a-48db-a6f6-0adec81369fc,
abstract = {{<p>Lesions to the vermis cerebelli in man have been reported to produce dysmetric saccades, defective smooth pursuit, and spontaneous upbeat nystagmus. From animal experiments it has been suggested that only the posterior part of the cerebellar vermis is involved in the processing of eye movements. We report the case of a patient whose anterior vermis was resected due to metastasis of a colon adenocarcinoma, and whose posterior vermis was unaffected either by the lesion or by the surgery. Although slow phase velocity was reduced in horizontal optokinetic nystagmus, the patient exhibited no defects of horizontal and vertical saccades or of smooth pursuit, and had no vertical nystagmus; nor was the horizontal vestibular ocular reflex affected as investigated in this study. The present findings suggest, firstly, that conclusions drawn from the findings of recent animal experiments may also be valid in man; and secondly, the defective eye movement occurring after lesion to the vermis cerebelli in humans is mainly due to lesioning of the posterior vermis.</p>}},
author = {{Magnusson, M. and Stromblad, L. G.}},
issn = {{0887-6169}},
language = {{eng}},
number = {{1}},
pages = {{71--78}},
publisher = {{Elsevier}},
series = {{Clinical Vision Sciences}},
title = {{Voluntary and vestibular eye movements in a case of lesion restricted to the anterior vermis cerebelli}},
volume = {{4}},
year = {{1989}},
}