Interhemispheric vs. stimulus-response spatial compatibility effects in bimanual reaction times to lateralized visual stimuli

  • Pellicano A
  • Barna V
  • Nicoletti R
 et al. 
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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.

Author-supplied keywords

  • Corpus callosum
  • Crossed-uncrossed difference (CUD)
  • Interhemispheric transmission
  • Left handedness
  • Poffenberger paradigm
  • Stimulus-response spatial compatibility

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  • Antonello Pellicano

  • Valeria Barna

  • Roberto Nicoletti

  • Sandro Rubichi

  • Carlo A. Marzi

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