Abstract
The time evolution of the event related ERD/ERS index was used for investigating the cortical response to distinct scene motions in a virtual reality environment. Occipital and parietal EEG leads of 29 healthy subjects were acquired during stabilometric test without and with visual stimulation (dynamic and static virtual scene). The EEG desynchronization in the studied leads was observed for above 93% of the subjects, particularly when the scene moves towards. The time evolution of the \(\hat\epsilon_{yx}(f)\) in the ABP (±1Hz around alpha band peak) and the Wilcoxon test (α = 0.05) results allowed to successfully distinguish the EEG evoked response and the effects of stimulating with distinct virtual scene. These findings suggest that control strategies differ with the direction of movement, and indicate the potentiality of the ERD/ERS assessment in studies of postural control during visual stimulation.KeywordsDynamic Visual StimulationEEGEvent-Related Synchronization/DesynchronizationVirtual Reality
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