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Multimodal Integration and Expertise

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posted on 08.06.2021, 10:55 by Rajwant Sandhu
Multi-modal integration often results in one modality dominating sensory perception. Such dominance is influenced by task demands, processing efficiency, and training. I assessed modality dominance between auditory and visual processing in a paradigm controlling for the first two factors while manipulating the third. In a uni-modal task auditory and visual processing was equated per individual participant. Pre and post training, participants completed a bimodal selective attention task where the relationship between relevant and irrelevant information, and the task-relevant modality changed across trials. Training in one modality was provided between pre and post-training tasks. Training resulted in non-specific speeding post-training. Pre-training, visual information impacted auditory responding more than vice versa and this pattern reversed following training, implying visual dominance pre, and auditory dominance post-training. Results suggest modality dominance is flexible and influenced by experimental design and participant abilities. Research should continue to uncover factors leading to sensory dominance by one modality.






Granting Institution

Ryerson University

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Psychology (Theses)