Exploring virtual reality object perception following sensory-motor interactions with different visuo-haptic collider...

Area of Science:

• Cognitive Neuroscience
• Virtual Reality Research
• Human-Computer Interaction

Background:

• Environmental interaction relies on integrating visual and haptic sensory information.
• Perception of objects involves binding multisensory inputs into a unified experience.
• Virtual reality (VR) allows dissociation of visual and haptic feedback, influencing perception.

Purpose of the Study:

• To investigate after-effects in virtual object size discrimination after prolonged visual-haptic incongruent interaction.
• To examine the role of haptic feedback and multisensory integration in inducing perceptual changes in VR.

Main Methods:

• 96 participants performed size discrimination tasks before and after a 15-minute visuomotor task in VR.
• Four groups experienced different combinations of visual (collider size) and haptic (vibration) feedback.
• Changes in the point of subjective equality (PSE) measured size perception bias.

Main Results:

• A small visual collider negatively impacted manipulation performance, irrespective of haptic feedback.
• Significant changes in PSE (increased perceived size) occurred only with small visual colliders and haptic feedback.
• Perceptual after-effects were absent in conditions with only visual incongruency, highlighting haptic influence.

Conclusions:

• Haptic information and multisensory integration are crucial for inducing perceptual changes in VR environments.
• Combined visual and haptic incongruencies can lead to after-effects in size perception.
• Findings contribute to understanding sensory integration in both real and virtual environments.