Figure 2 | Scientific Reports

Figure 2

From: Evidence from comprehensive independent validation studies for smooth pursuit dysfunction as a sensorimotor biomarker for psychosis

Figure 2

Examples of pursuit stimuli with pursuit recordings (eye position and eye velocity) in a control subject and a psychosis proband. Foveopetal step-ramp tasks (A) are used to measure saccade free pursuit initiation. Variables of interest are pursuit latency (time between target step and green dot), initial eye acceleration (blue line) and early maintenance gain (blue line in grey shaded intervals). Triangular wave tasks (B) are used to measure sustained predictive maintenance gain in predefined intervals (blue line in grey shaded intervals) excluding artifacts induced by target reversals. The figure has been adapted from one of our prior publications by Brakemeier and colleagues57.

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