Human heading judgments and object-based motion information

James E. Cutting, Ranxiao Frances Wang, Michelangelo Flückiger, Bernard Baumberger

Research output: Contribution to journalArticlepeer-review


In four experiments, we explored observers' ability to make heading judgments from simulated linear and circular translations through sparse forests and with pursuit fixation on one tree. We assessed observers' performance and information use in both regression and factorial designs. In all experiments we found that observers used three sources of object-based information to make their judgments - the displacement direction of the nearest object seen (a heuristic), inward displacement towards the fovea (an invariant) and outward deceleration (a second invariant). We found no support for the idea that observers use motion information pooled over regions of the visual field.

Original languageEnglish (US)
Pages (from-to)1079-1105
Number of pages27
JournalVision Research
Issue number6
StatePublished - Mar 1999
Externally publishedYes


  • Heading
  • Motion
  • Motion in depth
  • Optic flow

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems


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