TY  - JOUR
VL  - 27
A1  - Ricciardi, Emiliano
A1  - Tozzi, Leonardo
A1  - Leo, Andrea
A1  - Pietrini, Pietro
PB  - Brill Academic Publishers
SP  - 247
Y1  - 2014///
JF  - Multisensory Research
IS  - 3-4
ID  - eprints2870
EP  - 262
SN  - 2213-4794
N2  - 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.
AV  - none
TI  - Modality Dependent Cross-Modal Functional Reorganization Following Congenital Visual Deprivation within Occipital Areas: A Meta-Analysis of Tactile and Auditory Studies
KW  - fMRI
KW  -  Cross-modal brain responses
KW  -  Activation likelihood estimation
KW  -  PET
KW  -  Meta-analysis
KW  -  Blind
UR  - http://booksandjournals.brillonline.com/content/journals/10.1163/22134808-00002454
ER  -