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
Neuroradiologyjournal_title
Neuroradiologyauthors
Habas C,Cabanis EAdoi
10.1007/s00234-007-0239-8subject
Has Abstractpub_date
2007-08-01 00:00:00pages
681-8issue
8eissn
0028-3940issn
1432-1920journal_volume
49pub_type
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