Fig. 2 | Nature Communications

Fig. 2

From: Smooth tracking of visual targets distinguishes lucid REM sleep dreaming and waking perception from imagination

Fig. 2

Classification of 1D horizontal meridian tracking for a single participant. Eye-tracking is shown during a waking perception, b lucid REM sleep dreaming and c visuomotor imagination conditions. Slow tracking during imagination showed intrusions of saccadic eye movements during the tracking movement, while waking perception and REM sleep dreaming showed predominately smooth pursuit eye movements. Bottom panels show velocity (degrees/s) as the derivative of the best-fit sine function plus saccades

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