Speed discrimination of stereoscopic (cyclopean) motion

Robert Patterson, Michael Donnelly, Raymond E. Phinney, Mark Nawrot, Ana Whiting, Terri Eyle

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


This study investigated the degree to which speed of stereoscopic translational motion (i.e. moving binocular disparity information) can be discriminated in a display that minimizes position information. Observers viewed dynamic random-element stereograms depicting arrays of randomly positioned stereoscopic dots that moved bidirectionally. Two tasks were performed: a speed discrimination task and a displacement discrimination task. Across a range of conditions, speed could be discriminated under conditions in which displacement could not. Thus, speed of stereoscopic motion can be discriminated when position information is minimal. This result indicates that stereoscopic motion is sensed in a way that cannot be explained by feature tracking or by inferring the motion from memory of position and time.

Original languageEnglish (US)
Pages (from-to)871-878
Number of pages8
JournalVision research
Issue number7
StatePublished - Apr 1997
Externally publishedYes


  • Cyclopean
  • Motion perception
  • Stereoscopic

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

Fingerprint Dive into the research topics of 'Speed discrimination of stereoscopic (cyclopean) motion'. Together they form a unique fingerprint.

Cite this