University of Naples Federico Ii School of Medicine
نویسندگان
چکیده
The distinction between Meaningful (MFG) and Meaningless (MLG) gestures is relevant both to clinical classification frameworks and for comprehension of gesture processing within cognitive models. The specific aim of this review is to verify whether recent functional imaging studies support the view that different neural structures are involved in processing different kinds of gestures, with specific reference to the distinction between MLG and MFG. We selected 16 papers relevant to this issue, from which 27 contrasts and 157 activation peaks were examined. The main conclusion of our review is that the processing of MFG shares most neural bases with MLG but also involves the activation of additional neural structures. No brain region was demonstrated to be consistently activated by MLG processing; however, several regions that are activated bilaterally in MFG processing appear to be activated predominantly on the right side during MLG processing. We propose an attempt at reconciling cognitive models with recent neuroimaging data, that might best illustrate the role of cerebral regions, and in particular of the fronto-parietal mirror circuit, in gesture processing. 1.
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