Oculomotor activity and visual spatial attention

Leonardo Chelazzi, Monica Biscaldi, Maurizio Corbetta, Andrea Peru, Giancarlo Tassinari, Giovanni Berlucchi

Research output: Contribution to journalArticle

61 Scopus citations

Abstract

Subjects made a horizontal or vertical saccade in response to a non-lateralized auditory stimulus. Simple manual reaction time (RT) for the detection of light targets at extrafoveal locations was modulated by the intention to make the saccade insofar as RT to targets presented at the saccadic goal location or in the hemifield containing that location was faster than RT to targets presented at the opposite, mirror-symmetric location. This RT difference was maximal prior to the beginning of the saccade and vanished after saccade termination, indicating that the effect was caused by the neural activity leading to the saccade rather than to the eye movement or the eye position per se. The results have implications for the understanding of the relations between visual spatial attention and oculomotor control, especially with regard to inhibitory phenomena arising from the non-correspondence between the line of sight and the focus of attention.

Original languageEnglish
Pages (from-to)81-88
Number of pages8
JournalBehavioural Brain Research
Volume71
Issue number1-2
DOIs
StatePublished - Nov 1995

Keywords

  • Oculomotor system
  • Orienting
  • Reaction time
  • Saccadic eye movement
  • Selective attention
  • Vision

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    Chelazzi, L., Biscaldi, M., Corbetta, M., Peru, A., Tassinari, G., & Berlucchi, G. (1995). Oculomotor activity and visual spatial attention. Behavioural Brain Research, 71(1-2), 81-88. https://doi.org/10.1016/0166-4328(95)00134-4