Cortical
Different cortical areas influence the latencies of reactive saccades (intraparietal and posterior parietal cortex) and voluntary saccades (frontal eye fields and prefrontal cortex). In addition, one area influences the inhibition of reactive saccades (dorsolateral prefrontal cortex), and another area influences saccade sequences (supplementary eye fields).
Eye movements abnormalities related to cortical impairment include:
- Saccadic impairment
- increased latency (reactive and voluntary) & antisaccade error rate
- Fixation impairment
- saccadic intrusions (square-wave jerks)*
- Pursuit impairment
- jerky pursuit with catch-up saccades*
* in a non-specific way.
