Rotating visual spaces induce behavioral biases consistent with recalibrated heading integration in humans

Area of Science:

• Neuroscience
• Human sensory perception
• Vestibular system

Background:

• Organisms integrate movement over time to maintain heading representation.
• Precise calibration of heading integration is crucial to prevent accumulating errors.
• Rodent studies show neural heading integration is plastic, with rotating visual spaces inducing lasting biases.

Purpose of the Study:

• To investigate if humans exhibit behavioral biases in heading integration after exposure to rotating visual spaces.
• To characterize the properties of this potential human heading recalibration.

Main Methods:

• Utilized immersive virtual reality (VR) to expose human participants to rotating visual environments.
• Measured subsequent heading judgments to assess for biases.
• Analyzed factors influencing bias magnitude, including rotation direction, speed, and head movement.

Main Results:

• Humans demonstrated behavioral biases in heading judgments after VR-induced visual rotation.
• The bias direction correlated with rotation direction, and magnitude scaled with rotation speed.
• Increased head movement during trials led to greater bias accumulation.
• Visual motion alone was sufficient to induce a heading bias.

Conclusions:

• Human heading integration is plastic and can be recalibrated by rotating visual spaces, similar to findings in rodents.
• These results suggest a conserved mechanism for updating spatial orientation across species.
• The findings have implications for understanding spatial navigation and sensory recalibration in humans.