Brief Visual Deprivation Effects on Brain Oscillations During Kinesthetic and Visual-motor Imagery

Area of Science:

• Neuroscience
• Cognitive Science
• Human-Computer Interaction

Background:

• Eye state (open/closed) influences attention to external/internal stimuli.
• Visual stimulation changes affect cerebral activity during motor tasks.
• Imagery perspective's effect on motion representation is understudied.

Purpose of the Study:

• Investigate visual deprivation effects on brain oscillations during kinesthetic (KMI) and visual-motor imagery (VMI).
• Analyze alpha and beta rhythms from visual and motor EEG sources.
• Assess if brain oscillation differences impact motor imagery brain-computer interface (MI-BCI) performance using machine learning.

Main Methods:

• EEG recordings during eyes open (EO) and eyes closed (EC) conditions.
• Analysis of alpha and beta rhythms in visual and motor cortical areas.
• Machine learning classification for MI-BCI performance evaluation.

Main Results:

• EC condition showed stronger occipital desynchronization during VMI (enhanced visual processing).
• EO condition showed stronger motor alpha desynchronization, mirroring real movement effects.
• Visual deprivation conditions (EC/EO) influenced MI-BCI signal classification accuracy.

Conclusions:

• Shifting attention between external and internal stimuli modulates brain rhythms.
• Visual deprivation impacts brain activity associated with different movement imagery perspectives.
• Findings have practical implications for optimizing MI-BCI systems.