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The functional anatomy of visual-tactile integration in man: a study using positron emission tomography

Banati, R. B., Goerres, G. W., Tjoa, C., Aggleton, John Patrick and Grasby, P. 2000. The functional anatomy of visual-tactile integration in man: a study using positron emission tomography. Neuropsychologia 38 (2) , pp. 115-124. 10.1016/S0028-3932(99)00074-3

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The integration of neural signals from different sensory modalities is a prerequisite for many cognitive and behavioural functions. In this study, we have mapped the functional anatomy of the integration of sensory signals across the tactile and visual modalities. Using the PET radiotracer H215O, regional cerebral blood flow (rCBF) changes were measured in eight normal volunteers performing crossmodal recognition of simultaneously presented visual and tactile stimuli using a modified version of the ‘arc-circle test’. Whilst intramodal matching within the visual modality led to relative rCBF increases in the visual association cortex, crossmodal matching (visual–tactile), when compared to intramodal matching, was accompanied by relative rCBF increases in the anterior cingulate cortex, inferior parietal lobules, the left dorsolateral prefrontal cortex (DLPFC) and the left claustrum/insular cortex. The pattern of brain activation is congruent with areas of heteromodal and supramodal cortex and indicates that activation of multimodal areas is required to solve the crossmodal problem.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Neuroscience and Mental Health Research Institute (NMHRI)
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Uncontrolled Keywords: PET; Sensory integration; Crossmodal; Association cortex; Brain activation
Publisher: Elsevier
ISSN: 0028-3932
Last Modified: 04 Jun 2017 02:43

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