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MPI CyberMotion Simulator: Implementation of a Novel Motion Simulator to Investigate Multisensory Path Integration in Three Dimensions
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Adaptive heading performance during self-motion perception.

Shenbing Kuang1, Hu Deng1, Tao Zhang1

  • 1State Key Laboratory of Brain and Cognitive Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.

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Self-motion perception relies on optic flow, not just extraretinal signals. Behavioral training improves direction discrimination by enhancing the use of visual cues, demonstrating neural plasticity.

Keywords:
behavioral trainingextraretinal signalneural plasticityoptic flowself-motion perception

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Area of Science:

  • Neuroscience
  • Visual Perception
  • Human Motor Control

Background:

  • Self-motion direction perception typically relies on optic flow patterns on the retina.
  • Existing theories suggest extraretinal signals compensate for optic flow distortions during gaze shifts.
  • An alternative hypothesis posits that experience-based visual strategies can independently manage these distortions.

Purpose of the Study:

  • To test if self-motion perception can be accurately achieved using only optic flow, independent of extraretinal mechanisms.
  • To investigate the role of behavioral training in adapting to distorted optic flow.

Main Methods:

  • Human subjects performed a self-motion direction discrimination task.
  • Conditions included normal optic flow (fixation) and distorted optic flow (pursuit, simulated eye movements).
  • Training with correct answer feedback was administered to assess adaptive capabilities.

Main Results:

  • Direction perception was significantly impaired with distorted optic flow without extraretinal signals (simulated condition) prior to training.
  • Performance improved gradually over training sessions, indicating adaptation to distorted visual information.
  • Behavioral training enhanced the utilization of retinal cues to overcome optic flow distortions.

Conclusions:

  • Self-motion perception is a flexible process adaptable through behavioral training.
  • Experience can enable the brain to rely on optic flow alone, compensating for distortions without extraretinal input.
  • Findings suggest neural plasticity in cortical areas involved in self-motion processing.