Eye Movements and Higher Cortical Functions
The interdependence of eye movements and higher cortical functions was clearly demonstrated by Balint (1909), who studied a patient with a bilateral lesion of the parietooccipital brain systems. This patient had no object agnosia, yet he was able to perceive only one object at a time in the field of vision. The patient also had a curious form of wandering of the gaze. He could not switch his fixation smoothly from one object to another. The syndrome was called “psychic disturbance of fixation.” In Balint’s opinion, the disturbance of the higher visual function depends largely on the disturbance of eye movements. By means of modern neurophysiological methods, it is possible to make a more detailed analysis of the functional role of the cerebral cortex in the control of eye movements.
KeywordsCerebral Blood Flow Unit Activity Mental Arithmetic Functional Load Optokinetic Nystagmus
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