Visual Demands of Walking Are Reflected in Eye-Blink-Evoked EEG-Activity

Blinking is a natural user-induced response which paces visual information processing. This study investigates whether blinks are viable for segmenting continuous electroencephalography (EEG) activity, inferring cognitive demands in ecologically valid work environments. We report the blink-related EEG measures of participants who performed auditory tasks either standing, walking on grass, or whilst completing an obstacle course. Blink-related activity discriminated between different levels demand during walking. Both behavioral parameters (e.g., blink duration head motion) and varied with conditions. Larger occipital N1 was observed walking, relative to standing traversing course, reflects differences bottom-up perception. In contrast, amplitudes top-down components (N2, P3) significantly decreased increasing demands, reflected narrowing attention. consistent EEG, specifically Theta Alpha power that, respectively, increased task. presents novel robust analytical approach evaluate experienced settings, precludes use artificial task manipulations data segmentation.