Central control of eye movements

Date

2018

Authors

Baird-Gunning, Jonathan
Lueck, Christian

Journal Title

Journal ISSN

Volume Title

Publisher

Lippincott Williams & Wilkins Ltd.

Abstract

Purpose of review: Eye-movement research continues to provide an excellent tool for understanding the central control of motor function, both in health and disease. This article reviews recent findings in relation to saccadic eye movements, particularly antisaccades and microsaccades, with particular emphasis on the control of inaction, something which has recently become topical.Recent findingsMicrosaccades are under the control of the cerebral cortex, particularly the frontal and parietal eye fields. Their frequency and direction alters following presentation of visual stimuli. Spontaneous alterations in their frequency are correlated with alterations in the frequency of the gamma-band activity in the visual cortex as well as, interestingly, the heartbeat. Studies of saccades in Parkinson's disease have demonstrated abnormalities of prosaccade suppression which have variously been shown to correlate with freezing of gait, postural instability, minimal cognitive change and stimulation of the subthalamic nuclei. In stroke patients, abnormal patterns of saccade activity are associated with poor performance on reaching studies when using the weak arm. Summary: Eye-movement studies continue to provide new insights into the control of movement in general but have been particularly useful in investigating the process of suppressing unwanted movement.

Description

Keywords

fixation, microsaccade, Parkinson’s disease, saccade, stroke

Citation

Source

Current Opinion in Neurology

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

Restricted until

2099-12-31