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Physiological reading processes by integrating ERP and fMRI data.

Casarotto, Silvia and Bianchi, A.M. and Chiarenza, Giuseppe A. and Vanello, Nicola and Ricciardi, Emiliano and Pietrini, Pietro Physiological reading processes by integrating ERP and fMRI data. In: 13th World Congress of Psychophysiology, August 28 - September 2, Istanbul, Turkey p. 319. ISSN 0167-8760. (2006)

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This study investigates the neural correlates of reading by combining ERPs and fMRI. Data were recorded in separate sessions from 8 healthy adults during the same event-related design with jittered inter-stimulus interval. Two passive tasks (letter presentation - LP and symbol presentation - SP) and a reading aloud task (letter recognition - LR) were implemented. Averaged ERPs were decomposed by Independent Component Analysis after data dimensionality reduction by Principal Component Analysis. The independent components (ICs) were associated to well-known physiological potentials: N2_P2b and P2a for all tasks and a late wide negativity (LNA) for LP and LR. Low Resolution Electromagnetic Tomography (LORETA) was applied to single ICs. fMRI data were analysed by multiple linear regression. ERPs-fMRI correspondence was described by the Euclidean distance between LORETA and fMRI local maxima.

Item Type: Conference or Workshop Item (Paper)
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Research Area: Computer Science and Applications
Depositing User: Users 72 not found.
Date Deposited: 26 Feb 2016 09:27
Last Modified: 13 Sep 2016 10:10
URI: http://eprints.imtlucca.it/id/eprint/3117

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