Crossmodal links between vision and touch in spatial attention: A computational modelling study

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Abstract

Many studies have revealed that attention operates across different sensory modalities, to facilitate the selection of relevant information in the multimodal situations of every-day life. Cross-modal links have been observed either when attention is directed voluntarily (endogenous) or involuntarily (exogenous). The neural basis of cross-modal attention presents a significant challenge to cognitive neuroscience. Here, we used a neural network model to elucidate the neural correlates of visual-tactile interactions in exogenous and endogenous attention. The model includes two unimodal (visual and tactile) areas connected with a bimodal area in each hemisphere and a competition between the two hemispheres. The model is able to explain cross-modal facilitation both in exogenous and endogenous attention, ascribing it to an advantaged activation of the bimodal area on the attended side (via a top-down or bottom-up biasing), with concomitant inhibition towards the opposite side. The model suggests that a competitive/cooperative interaction with biased competition may mediate both forms of cross-modal attention. Copyright © 2010 Elisa Magosso et al.

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Magosso, E., Serino, A., Di Pellegrino, G., & Ursino, M. (2010). Crossmodal links between vision and touch in spatial attention: A computational modelling study. Computational Intelligence and Neuroscience, 2010. https://doi.org/10.1155/2010/304941

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