Clinical, neurophysiological, and neuroimaging studies have yielded controversial results about the representation of the face in the somatosensory cortex. To clarify this issue we mechanically stimulated the left forehead (ophthalmic trigeminal division, V1) and left lower lip (mandibular trigeminal division, V3) in 14 healthy volunteers during acquisition of whole-brain fMRI images. During V1 and V3 stimulation the fMRI signal in the primary (SI) and secondary (SII) somatosensory cortices in the contralateral hemisphere increased. Within both SI and SII, the foci activated by stimulation of the two trigeminal divisions largely overlapped. In contrast, the ipsilateral representation differed. Whereas V3 stimulation activated the contralateral somatosensory cortex alone, V1 stimulation activated SI and SII bilaterally. These results to some extent contrast with electrophysiological data in monkeys and disclose distinct cortical representations within facial territories in humans. © 2003 Elsevier Science (USA). All rights reserved.

Representation of different trigeminal divisions within the primary and secondary human somatosensory cortex / Iannetti, G. D.; Porro, Carlo Adolfo; Pantano, P.; Romanelli, P. L.; Galeotti, F.; Cruccu, G.. - In: NEUROIMAGE. - ISSN 1053-8119. - STAMPA. - 19:(2003), pp. 906-912. [10.1016/S1053-8119(03)00139-3]

Representation of different trigeminal divisions within the primary and secondary human somatosensory cortex

PORRO, Carlo Adolfo;
2003

Abstract

Clinical, neurophysiological, and neuroimaging studies have yielded controversial results about the representation of the face in the somatosensory cortex. To clarify this issue we mechanically stimulated the left forehead (ophthalmic trigeminal division, V1) and left lower lip (mandibular trigeminal division, V3) in 14 healthy volunteers during acquisition of whole-brain fMRI images. During V1 and V3 stimulation the fMRI signal in the primary (SI) and secondary (SII) somatosensory cortices in the contralateral hemisphere increased. Within both SI and SII, the foci activated by stimulation of the two trigeminal divisions largely overlapped. In contrast, the ipsilateral representation differed. Whereas V3 stimulation activated the contralateral somatosensory cortex alone, V1 stimulation activated SI and SII bilaterally. These results to some extent contrast with electrophysiological data in monkeys and disclose distinct cortical representations within facial territories in humans. © 2003 Elsevier Science (USA). All rights reserved.
19
906
912
Representation of different trigeminal divisions within the primary and secondary human somatosensory cortex / Iannetti, G. D.; Porro, Carlo Adolfo; Pantano, P.; Romanelli, P. L.; Galeotti, F.; Cruccu, G.. - In: NEUROIMAGE. - ISSN 1053-8119. - STAMPA. - 19:(2003), pp. 906-912. [10.1016/S1053-8119(03)00139-3]
Iannetti, G. D.; Porro, Carlo Adolfo; Pantano, P.; Romanelli, P. L.; Galeotti, F.; Cruccu, G.
File in questo prodotto:
File Dimensione Formato  
Iannetti_2003.pdf

non disponibili

Descrizione: Articolo principale
Tipologia: Versione dell'editore (versione pubblicata)
Dimensione 305.29 kB
Formato Adobe PDF
305.29 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1107964
Citazioni
  • ???jsp.display-item.citation.pmc??? 9
  • Scopus 48
  • ???jsp.display-item.citation.isi??? 43
social impact