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Updated: Apr 29, 2026
Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
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Association of saccade duration and saccade acceleration/deceleration asymmetry during visually guided saccade in
Hong Cui1, Xiao-Hui Liu1, Ke-Yong Wang2
1Division of Medical Psychology, Chinese PLA General Hospital and Medical School PLA, Beijing, China.
Objective:
To examine the difference between schizophrenia patients and normal controls on velocity and acceleration of saccade, by using the basic visually guided saccade (VGS) paradigm.
Methods:
Eighteen schizophrenia outpatients and fourteen normal controls participated in the VGS task. Multiple indicators, including amplitude, duration, velocity, latency, accuracy rate, acceleration, and deceleration were analyzed. Asymmetric acceleration index (AAI) was introduced to describe the difference between peak acceleration and peak deceleration. The correlation coefficient (RAD) of AAI and duration was computed to examine the difference between schizophrenia patients and normal controls.
Results:
No significant difference between patients and normal controls was found on amplitude, duration, latency, and accuracy rate. However, RAD values of schizophrenia patients were significantly lower than the control group.
Conclusion:
Compared to normal controls, association of saccade duration and saccade acceleration/deceleration asymmetry during visually guided saccade was lower in schizophrenia patients.
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