Saccadic latency in Parkinson's disease correlates with executive function and brain atrophy, but not motor severity.

The correlations between sessions for the control group were highly significant for μ ( r = 0.81, p < 0.001; N = 17), σ ( r = 0.58, p < 0.01; N = 17), and σ Ε ( r = 0.66, p < 0.01; N = 17) indicating good replication of saccade parameters between sessions, within subjects.

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