The neural network involved in a bimanual tactile-tactile matching discrimination task: a functional imaging study at 3 T.

Abstract:

INTRODUCTION:The cerebral and cerebellar network involved in a bimanual object recognition was studied in blood oxygenation dependent level functional magnetic resonance imaging (fMRI). METHODS:Nine healthy right-handed volunteers were scanned (1) while performing bilateral finger movements (nondiscrimination motor task), and (2) while performing a bimanual tactile-tactile matching discrimination task using small chess pieces (tactile discrimination task). RESULTS:Extensive activations were specifically observed in the parietal (SII, superior lateral lobule), insular, prefrontal, cingulate and neocerebellar cortices (HVIII), with a left predominance in motor areas, during the tactile discrimination task in contrast to the findings during the nondiscrimination motor task. CONCLUSION:Bimanual tactile-tactile matching discrimination recruits multiple sensorimotor and associative cerebral and neocerebellar networks (including the cerebellar second homunculus, HVIII), comparable to the neural circuits involved in unimanual tactile object recognition.

journal_name

Neuroradiology

journal_title

Neuroradiology

authors

Habas C,Cabanis EA

doi

10.1007/s00234-007-0239-8

subject

Has Abstract

pub_date

2007-08-01 00:00:00

pages

681-8

issue

8

eissn

0028-3940

issn

1432-1920

journal_volume

49

pub_type

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