Hemispheric asymmetries in vigilance and cerebral arousal mechanisms in younger and older adults.

@article{Cherry1999HemisphericAI,
  title={Hemispheric asymmetries in vigilance and cerebral arousal mechanisms in younger and older adults.},
  author={Barbara J Cherry and Joseph B. Hellige},
  journal={Neuropsychology},
  year={1999},
  volume={13 1},
  pages={111-20}
}
Younger and older adults responded to an asterisk presented to either the left or right visual field, with delay interval between onset of a fixation cross and onset of the asterisk varied. At delay intervals longer than 3 s, reaction time was faster when the same visual field was stimulated on 2 successive trials than when different visual fields were stimulated. This prefield effect was larger in the left visual field (right hemisphere), consistent with hypotheses of hemispheric asymmetry for… CONTINUE READING

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