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Vision in the temporal crescent in occipital infarction
Brain : a Journal of Neurology
|March 1, 1980
Summary
Occipital infarction can leave patients with useful residual vision in the temporal crescent, aiding in the perception of moving stimuli. This preserved temporal crescent vision significantly impacts visual field perception.
Area of Science:
- Neuroscience
- Ophthalmology
- Visual Science
Background:
- Occipital infarction can lead to hemianopias, affecting visual field perception.
- Understanding residual visual abilities is crucial for patients with visual cortex lesions.
Observation:
- Four patients with hemianopias from occipital infarction were studied.
- Useful residual vision was noted in the unpaired temporal crescent for all patients.
- Moving stimuli were particularly well perceived in this temporal crescent area.
Findings:
- Preservation of the temporal crescent creates incongruous visual fields.
- The temporal crescent plays a role in movement perception and the fixation reflex.
Implications:
- Discusses the significance of the temporal crescent in visual processing.
- Relates findings to residual visual ability in striate cortex lesions.
- Explores the role of the monocular temporal field in visual systems.