Oculomotor Bias Induced by Number Perception

Martin H. Fischer, Nele Warlop, Robin L. Hill, Wim Fias

Research output: Contribution to journalArticlepeer-review


Previous research with manual response methods has found evidence for an association between numbers and space. The present study investigated whether eye movements also show this association. Eye movement responses were recorded from 15 healthy participants as they categorized the digits 0-9 as odd or even. Responses were initiated faster to the left in response to small digits and faster to the right in response to large digits. Movement amplitudes were not systematically affected by either number magnitude or parity. These results provide further evidence for a spatially oriented “mental number line”.
Original languageEnglish
Pages (from-to)91-97
JournalExperimental Psychology
Issue number2
Publication statusPublished - 1 Jan 2004


  • mental number line
  • MARC
  • saccadic latency

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