Abstract:
:Mirror neurons, originally described in the monkey premotor area F5, are embedded in a frontoparietal network for action execution and observation. A similar Mirror Neuron System (MNS) exists in humans, including precentral gyrus, inferior parietal lobule, and superior temporal sulcus. Controversial is the inclusion of Broca's area, as homologous to F5, a relevant issue in light of the mirror hypothesis of language evolution, which postulates a key role of Broca's area in action/speech perception/production. We assess "mirror" properties of this area by combining neuroimaging and intraoperative neurophysiological techniques. Our results show that Broca's area is minimally involved in action observation and has no motor output on hand or phonoarticulatory muscles, challenging its inclusion in the MNS. The presence of these functions in premotor BA6 makes this area the likely homologue of F5 suggesting that the MNS may be involved in the representation of articulatory rather than semantic components of speech.
journal_name
Hum Brain Mappjournal_title
Human brain mappingauthors
Cerri G,Cabinio M,Blasi V,Borroni P,Iadanza A,Fava E,Fornia L,Ferpozzi V,Riva M,Casarotti A,Martinelli Boneschi F,Falini A,Bello Ldoi
10.1002/hbm.22682subject
Has Abstractpub_date
2015-03-01 00:00:00pages
1010-27issue
3eissn
1065-9471issn
1097-0193journal_volume
36pub_type
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