Related Experiment Video
Updated: Jun 27, 2026
05:44
Using Saccadometry with Deep Brain Stimulation to Study Normal and Pathological Brain Function
Published on: July 14, 2016
Post-movement beta synchronisation after complex prosaccade task.
Szilvia Gulyás1, Imre Szirmai, Anita Kamondi
1Department of Neurology, Semmelweis University, Budapest, Hungary Balassa u. 6., 1083 Budapest, Hungary. gulyszi@yahoo.co.uk
Summary
Eye movements, specifically saccades, trigger post-movement beta synchronisation (PMBS) in the brain, similar to limb movements. This finding reveals bilateral brain activation for eye movement control and offers new research and clinical tools.
Area of Science:
- Neuroscience
- Electrophysiology
- Human Motor Control
Background:
- Post-movement beta synchronisation (PMBS) is an increase in beta activity over the sensorimotor cortex after limb movement cessation.
- The neural mechanisms underlying eye movement control and their associated EEG changes are not fully understood.
Purpose of the Study:
- To investigate if ocular saccades, a type of eye movement, also induce movement-related electroencephalogram (EEG) changes.
- To characterize the phenomenon of post-movement beta synchronisation in the context of eye movements.
Main Methods:
- Six healthy volunteers performed complex saccades while electro-oculography was used for recording.
- EEG power in the beta frequency band was measured before, during, and after saccade execution.
Main Results:
- A significant increase in beta power was detected over the frontocentral regions of both brain hemispheres following the completion of the saccade task.
- The latency for this ocular PMBS was approximately 1100 milliseconds.
Conclusions:
- Ocular PMBS, evoked by complex saccades, mirrors that observed after limb movements.
- The bilateral presence of ocular PMBS suggests coordinated activation of cortical areas involved in planning and executing eye movements.
- This study is the first to report eye-movement-related PMBS, highlighting its potential for research and clinical assessment of eye movement control networks.
