Publications

Authors:

Beltramello, Alberto; Cerini, Roberto; Puppini, Giovanni; EL DALATI, Ghassan; Viola, S; Martone, Enrico; Cordopatri, D; Manfredi, M; Aglioti, S; Tassinari, Giancarlo

Title:

Motor representation of the hand in the human cortex: an f-MRI study with a conventional 1.5 T clinical unit

Year:

1998

Type of item:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Language:

Inglese

Format:

A Stampa

Referee:

Sì

Name of journal:

Italian Journal of Neurological Sciences

ISSN of journal:

0392-0461

N° Volume:

19

Number or Folder:

5

Page numbers:

277-284

Keyword:

Neurology; MRI; primary motor area (MA); Supplementary motor area (SMA)

Short description of contents:

The purpose of this study was to show a gradient of possible bilateral activation for movements of the non-dominant vs. dominant hand, as well as for areas involved in complex vs. simple hand movements. A standard 1.5 T magnetic resonance imaging (MRI) system has been utilized to localize the cortical motor hand areas, using the blood oxygen level dependent contrast (BOLDc) technique and single-section fast low-angle shot (FLASH) imaging. Ten normal right-handed subjects volunteered for the study. The motor tasks consisted of simple (flexion-extension) finger movements of either hand, and complex movements (finger-to-thumb opposition in a repeating, pre-planned sequence) of the non-dominant hand. Simple movements caused contralateral activation of the primary motor area (MA); ipsilateral activation was observed for the non-dominant hand only. Supplementary motor area (SMA) was also activated, with a clear contralateral prevalence. The ratio of bilateral activation of MA did not change with complex movements of the non-dominant hand, while SMA as well as lateral premotor area were largely bilaterally activated in this task. In conclusion, the ipsilateral MA is activated for movements--even simple--performed with the non-dominant hand. There is widespread functional activity, involving both contralateral and ipsilateral SMA, for complex movements.

Product ID:

12069

Handle IRIS:

11562/301945

Deposited On:

August 28, 2007

Last Modified:

November 15, 2022

Bibliographic citation:

Beltramello, Alberto; Cerini, Roberto; Puppini, Giovanni; EL DALATI, Ghassan; Viola, S; Martone, Enrico; Cordopatri, D; Manfredi, M; Aglioti, S; Tassinari, Giancarlo, Motor representation of the hand in the human cortex: an f-MRI study with a conventional 1.5 T clinical unit «Italian Journal of Neurological Sciences» , vol. 19 , n. 5 , 1998 , pp. 277-284

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