eprintid: 2870
rev_number: 6
eprint_status: archive
userid: 69
dir: disk0/00/00/28/70
datestamp: 2015-11-10 11:34:54
lastmod: 2016-09-13 09:45:57
status_changed: 2015-11-10 11:34:54
type: article
metadata_visibility: show
creators_name: Ricciardi, Emiliano
creators_name: Tozzi, Leonardo
creators_name: Leo, Andrea
creators_name: Pietrini, Pietro
creators_id: emiliano.ricciardi@imtlucca.it
creators_id: 
creators_id: 
creators_id: pietro.pietrini@imtlucca.it
title: Modality Dependent Cross-Modal Functional Reorganization Following Congenital Visual Deprivation within Occipital Areas: A Meta-Analysis of Tactile and Auditory Studies
ispublished: pub
subjects: RC0321
divisions: CSA
full_text_status: none
keywords: fMRI, Cross-modal brain responses, Activation likelihood estimation, PET, Meta-analysis, Blind
abstract: Cross-modal responses in occipital areas appear to be essential for sensory processing in visually deprived subjects. However, it is yet unclear whether this functional recruitment might be dependent on the sensory channel conveying the information. In order to characterize brain areas showing task-independent, but sensory specific, cross-modal responses in blind individuals, we pooled together distinct brain functional studies in a single based meta-analysis according only to the modality conveying experimental stimuli (auditory or tactile).Our approach revealed a specific functional cortical segregation according to the sensory modality conveying the non-visual information, irrespectively from the cognitive features of the tasks. In particular, dorsal and posterior subregions of occipital and superior parietal cortex showed a higher cross-modal recruitment across tactile tasks in blind as compared to sighted individuals. On the other hand, auditory stimuli activated more medial and ventral clusters within early visual areas, the lingual and inferior temporal cortex. These findings suggest a modality-specific functional modification of cross-modal responses within different portions of the occipital cortex of blind individuals. Cross-modal recruitment can thus be specifically influenced by the intrinsic features of sensory information.
date: 2014
date_type: published
publication: Multisensory Research
volume: 27
number: 3-4
publisher: Brill Academic Publishers
pagerange: 247-262
id_number: 10.1163/22134808-00002454
refereed: TRUE
issn: 2213-4794
official_url: http://booksandjournals.brillonline.com/content/journals/10.1163/22134808-00002454
citation:   Ricciardi, Emiliano and Tozzi, Leonardo and Leo, Andrea and Pietrini, Pietro  Modality Dependent Cross-Modal Functional Reorganization Following Congenital Visual Deprivation within Occipital Areas: A Meta-Analysis of Tactile and Auditory Studies.  Multisensory Research, 27 (3-4).  pp. 247-262.  ISSN 2213-4794      (2014)