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The effects of walking on peripheral visual information processing in a MoBI dual-task setting : an ERP study

Thommai, Johanna (2021) The effects of walking on peripheral visual information processing in a MoBI dual-task setting : an ERP study.

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Abstract:Processing visual information while walking makes up a large part of our everyday life. Impairments in one or both tasks could lead to negative consequences such as collision, falls or errors in the cognitive task. However the exact nature of this cognitive-motor dual-task is not yet fully understood. The goal of the current research was therefore, to investigate whether recently proposed assumptions of an walking-induced visual information processing of peripheral input were replicable, and whether this had an impact on task difficulty. A dual-task MoBI approach utilizing a cognitive-motor task was employed. 24 participants executed a visual discrimination task while concurrently executing varying motor tasks on a treadmill in a Gait Real Time Analysis Interactive Lab (GRAIL). Stimuli were presented on a screen at varying levels of eccentricities. The obtained results did not indicate a clear interaction effect between walking and peripheral vision. Significant results of an interaction between eccentricities and movement were only obtained in the ERP component P2 at parietal-occipital recording sites, while the components N1 and P3, as well as behavioural data remained insignificant. However, for these measures a significant effect of Visual Angle was found. Treadmill walking and the simple detection might not have induced realistic real-life demands which consequently made it difficult to examine the interaction of walking and peripheral visual information processing. Nonetheless, the positive modulation for the interaction of walking and peripheral angle found in the P2 component, calls for further investigations under a modified task setting.
Item Type:Essay (Master)
Faculty:BMS: Behavioural, Management and Social Sciences
Subject:77 psychology
Programme:Psychology MSc (66604)
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