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Titolo:
Eye-hand coordination during reaching. I. Anatomical relationships betweenparietal and frontal cortex
Autore:
Marconi, B; Genovesio, A; Battaglia-Mayer, A; Ferraina, S; Squatrito, S; Molinari, M; Lacquaniti, F; Caminiti, R;
Indirizzi:
Univ Rome La Sapienza, Dipartimento Fisiol Umana & Farmacol, I-00185 Rome,Italy Univ Rome La Sapienza Rome Italy I-00185 & Farmacol, I-00185 Rome,Italy IRCCS Santa Lucia, I-00179 Rome, Italy IRCCS Santa Lucia Rome Italy I-00179 CS Santa Lucia, I-00179 Rome, Italy Univ Bologna, Dipartimento Fisiol Umana & Gen, I-40127 Bologna, Italy UnivBologna Bologna Italy I-40127 l Umana & Gen, I-40127 Bologna, Italy Univ Roma Tor Vergata, Dipartimento Neurosci, I-00179 Rome, Italy Univ Roma Tor Vergata Rome Italy I-00179 o Neurosci, I-00179 Rome, Italy Univ Paris 06, INSERM U483, F-75005 Paris, France Univ Paris 06 Paris France F-75005 6, INSERM U483, F-75005 Paris, France
Titolo Testata:
CEREBRAL CORTEX
fascicolo: 6, volume: 11, anno: 2001,
pagine: 513 - 527
SICI:
1047-3211(200106)11:6<513:ECDRIA>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
MACAQUE MONKEY; RHESUS-MONKEY; PREMOTOR CORTEX; CORTICAL CONNECTIONS; CORTICOCORTICAL CONNECTIONS; PARIETOOCCIPITAL CORTEX; NEURONAL-ACTIVITY; VISUAL TARGETS; ARM MOVEMENTS; MOTOR CORTEX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
60
Recensione:
Indirizzi per estratti:
Indirizzo: Caminiti, R Univ Rome La Sapienza, Dipartimento Fisiol Umana & Farmacol, Piazzale AldoMoro 5, I-00185 Rome, Italy Univ Rome La Sapienza Piazzale AldoMoro 5 Rome Italy I-00185
Citazione:
B. Marconi et al., "Eye-hand coordination during reaching. I. Anatomical relationships betweenparietal and frontal cortex", CEREB CORT, 11(6), 2001, pp. 513-527

Abstract

The anatomical and physiological substrata of eye-hand coordination duringreaching were studied through combined anatomical and physiological techniques. The association connections of parietal areas V6A and PEc. and those of dorso-rostral (F7) and dorso-caudal (F2) premotor cortex were studied inmonkeys, after physiological characterization of the parietal regions where retrograde tracers were injected. The results show that parieto-occipitalarea V6A is reciprocally connected with F7, and receives a smaller projection from F2, Local parietal projections to V6A arise from areas MIP and, toa lesser extent, 7m, PEa and PEc. On the contrary, parietal area PEc is strongly and reciprocally connected with the part of F2 located close to the pre-central dimple (pre-CD). Local parietal projections to PEc come from a distributed network, including PEa, MIF! PEci and, to a lesser extent, 7m, V6A, 7a and MST. promotor area F7 receives parietal projections mainly from7m and V6A, and local frontal projections mainly from F2. On the contrary,promotor area F2 in the pre-CD zone receives parietal inputs from PEc and,to a lesser extent, PEci, while in the peri-arcuate zone F2 receives parietal projections from PEa and MIP Local frontal projections to F2 pre-CO mostly stem from F4, and, to a lesser extent, from F7 and F3, and CMAd; those addressed to peri-arcuate zone of F2 arise mainly from F5 and, to a lesser extent, from F7, F4, dorsal (CMAd) and ventral (CMAv) cingulate motor areas, pre-supplementary (F6) and supplementary (F3) motor areas. The distribution of association cells in both frontal and parietal cortex was characterized through a spectral analysis that revealed an arrangement of these cells in the form of bands, composed of cell clusters, or 'columns', The reciprocal connections linking parietal and frontal cortex might explain the presence of visually related and eye-position signals in premotor cortex, as wellas the influence of information about arm position and movement direction in V6A and PEc. The association connections identified in this study might carry sensory as well motor information that presumably provides a basis for a re-entrant signaling. This might be necessary to match retinal-, eye- and hand-related information underlying eye-hand coordination during reaching.

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Documento generato il 22/01/20 alle ore 19:21:09