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Published on: November 16, 2017
Interhemispheric vs. stimulus-response spatial compatibility effects in bimanual reaction times to lateralized visual
Antonello Pellicano1, Valeria Barna, Roberto Nicoletti
1Division for Clinical and Cognitive Neurosciences, Department of Neurology Medical Faculty, RWTH Aachen University Aachen, Germany.
Abstract:
In the present study, we tested right- and left-handed participants in a Poffenberger paradigm with bimanual responses and hands either in an anatomical or in a left-right inverted posture. We observed a significant positive crossed-uncrossed difference (CUD) in RTs for both manual dominance groups and both response postures. These results rule out an explanation of the CUD in terms of stimulus-response spatial compatibility (SRSC) and provide convincing evidence on the important role of interhemispheric callosal transfer in bimanual responding in right- as well as left-handed individuals.

