The Feasibility and Test-Retest Reliability of Wireless Dry-Electrode EEG During a Dynamic Psychomotor Virtual...

Area of Science:

• Neuroscience
• Sports Science
• Human-Computer Interaction

Background:

• Virtual reality (VR) offers immersive platforms for psychomotor performance analysis.
• The reliability of dry-electrode electroencephalography (EEG) during dynamic VR exergames (VRex) is not well-established.

Purpose of the Study:

• To investigate the feasibility of using dry-electrode EEG to assess brain activity during VRex.
• To determine the test-retest reliability of dry-electrode EEG frequency bands, particularly the alpha band, during a dynamic VR task.

Main Methods:

• Ten male amateur combat sports athletes participated.
• Dry-electrode EEG was recorded pre, post, and during a standardized boxing VRex session.
• EEG data were analyzed for power spectral density, focusing on frequency bands and electrode site reliability.

Main Results:

• Intraclass correlation coefficients (ICCs) showed poor-to-excellent reliability (0.208-0.858) across 4-30 Hz.
• Reliability during active VRex intervals was poor-to-good (0.393-0.636).
• Alpha band activity demonstrated higher reliability across electrode sites compared to average spectral band values.

Conclusions:

• Dry-electrode EEG is feasible for detecting neural signals during dynamic VR tasks.
• The reliability of this technology in VRex is variable but shows potential, especially for alpha band analysis.