Optokinetic stimulation affects temporal estimation in healthy humans

Carmelo Mario Vicario, Carlo Caltagirone, Massimiliano Oliveri

Research output: Contribution to journalArticlepeer-review


The representation of time and space are closely linked in the cognitive system. Optokinetic stimulation modulates spatial attention in healthy subjects and patients with spatial neglect. In order to evaluate whether optokinetic stimulation could influence time perception, a group of healthy subjects performed "time-comparison" tasks of sub- and supra-second intervals before and after leftward or rightward optokinetic stimulation. Subjective time perception was biased by the direction of optokinetic stimulation. Rightward optokinetic stimulation induced an overestimation of time perception compared with baseline and leftward optokinetic stimulation. These results indicate a directional bias in time perception induced by manipulation of spatial attention and could argue for a mental linear representation of time intervals.

Original languageEnglish
Pages (from-to)68-73
Number of pages6
JournalBrain and Cognition
Issue number1
Publication statusPublished - Jun 2007


  • Optokinetic stimulation
  • Perception
  • Space
  • Time

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology


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