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Differences in Brain Activity During Real and Virtual Reality Motor Tasks in Normal Healthy Individuals.

Masafumi Kubota1, Takuro Konnai2, Yuki Takami3

  • 1Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan. mkubota@staff.kanazawa-u.ac.jp.

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Summary

Brain activity during virtual reality motor tasks differs from real-world tasks. Near-infrared spectroscopy (NIRS) revealed distinct oxy-haemoglobin (O2Hb) patterns in the motor cortex, highlighting differences in neural engagement between virtual reality (VR) and real-world motor tasks.

Keywords:
Box and Block testFunctional near-infrared spectroscopyHealthy individualsVentrolateral prefrontal cortexVirtual reality

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Area of Science:

  • Neuroscience
  • Human-Computer Interaction
  • Motor Control

Background:

  • Virtual reality (VR) offers immersive experiences, but its neural underpinnings compared to real-world tasks require further investigation.
  • Understanding brain activity differences is crucial for optimizing VR applications in rehabilitation and training.

Purpose of the Study:

  • To investigate and compare brain activity patterns during real motor tasks versus virtual reality motor tasks.
  • To identify specific differences in neural engagement between real-world and VR environments.

Main Methods:

  • Utilized near-infrared spectroscopy (NIRS) to measure brain activity in 12 healthy adults.
  • Compared brain activity during a real Box and Block test (R-BBT) and a virtual reality Box and Block test (VR-BBT).
  • Monitored changes in oxy-haemoglobin (O2Hb) and deoxy-haemoglobin (HHb) in the motor cortex.

Main Results:

  • Both tasks showed increased O2Hb in the motor cortex, but patterns differed significantly.
  • R-BBT exhibited an initial O2Hb increase followed by a rapid decrease, while VR-BBT maintained high O2Hb levels.
  • Significantly higher O2Hb was observed in the dorsal prefrontal cortex during VR-BBT compared to R-BBT.

Conclusions:

  • Brain activity during motor tasks is significantly different between real-world and virtual reality environments.
  • VR motor tasks may elicit distinct and sustained neural engagement patterns compared to their real-world counterparts.
  • Findings suggest that VR may recruit additional cognitive resources, as indicated by prefrontal cortex activity.