Print Email Facebook Twitter Exploring the Influence of Visual, Auditory, and Mental Stimuli on Cognitive Load in a Virtual Shopping Environment Title Exploring the Influence of Visual, Auditory, and Mental Stimuli on Cognitive Load in a Virtual Shopping Environment Author Mulder, Job (TU Delft Mechanical, Maritime and Materials Engineering) Contributor Marchal Crespo, L. (mentor) de Winter, J.C.F. (mentor) Cucinella, S.L. (mentor) Degree granting institution Delft University of Technology Programme Mechanical Engineering | Vehicle Engineering | Cognitive Robotics Date 2024-03-08 Abstract Immersive virtual reality (IVR) with head-mounted displays (HMDs) is expanding in various fields like training, but its effects on cognitive load from visual, auditory, and mental stimuli in virtual environments remain uncertain. This is particularly relevant in neurorehabilitation, where patients may suffer from training in overstimulating environments due to cognitive impairments. This study further explores how low and high levels of visual, auditory, and cognitive demands affect the cognitive load. Twenty-two participants used an HMD for a virtual shopping task, which involved selecting listed products and placing them in a cart, under baseline (the task without additional demands) and two stimulus complexity levels (low and high) for visual, auditory, and mental demands. The study assessed cognitive load using conventional (heart rate, variability, skin conductance, performance, self-reported questionnaire) and underexplored measures (head stillness, hand smoothness, gaze behavior), and explored behavior changes due to stimulus impact. Results showed that visual and auditory stimuli had minimal effects on cognitive load, with only specific measures showing any notable differences from the baseline. Mental stimuli significantly impacted cognitive load, with high mental tasks notably affecting the measures and behavior, whereas low mental tasks showed fewer changes. This research concluded that mental stimuli significantly increased the cognitive load in virtual environments, more than visual or auditory stimuli, suggesting future virtual reality designs should prioritize managing mental load. Furthermore, the study highlights the effectiveness of head stillness and gaze behavior as innovative measures for evaluating cognitive load. Subject Cognitive LoadVirtual realitypsychophysiologyHuman factorsBehaviorRealism To reference this document use: http://resolver.tudelft.nl/uuid:5003af3b-f873-4968-a211-b8be0fc699a3 Part of collection Student theses Document type master thesis Rights © 2024 Job Mulder Files PDF master-thesis-20240227.pdf 12.32 MB Close viewer /islandora/object/uuid:5003af3b-f873-4968-a211-b8be0fc699a3/datastream/OBJ/view