Material-specific hemispheric activation

Academic Article


  • Attention is defined as consisting of three components-arousal, attentiveness and activation (preparation for action). The purpose of this study was to determine: (1) whether verbal and nonverbal stimuli differentially prepare the hemispheres for action; (2) how long this asymmetric activation persists; and (3) whether a response-linked decisional process is necessary for inducing these asymmetries. The findings indicated that: (1) although verbal warning stimuli (WS) reduced reaction times (RTs) of the right hand more than those of the left hand, visuospatial WS reduced RTs of both hands equally; (2) the asymmetries induced by the verbal WS were less robust at 15-20 sec after the WS and were not present during post-session testing; and (3) a response-linked decisional process was necessary for inducing activation asymmetries. © 1980.
  • Authors

    Published In

  • Neuropsychologia  Journal
  • Digital Object Identifier (doi)

    Author List

  • Bowers D; Heilman KM
  • Start Page

  • 309
  • End Page

  • 319
  • Volume

  • 18
  • Issue

  • 3