OSA's Digital Library

Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 2, Iss. 11 — Nov. 1, 1985
  • pp: 1836–1847

Velocity discrimination in central and peripheral visual field

Guy A. Orban, Frank Van Calenbergh, Bart De Bruyn, and Hugo Maes  »View Author Affiliations


JOSA A, Vol. 2, Issue 11, pp. 1836-1847 (1985)
http://dx.doi.org/10.1364/JOSAA.2.001836


View Full Text Article

Enhanced HTML    Acrobat PDF (1430 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Just-noticeable differences (jnd’s) in velocity were measured as a function of reference velocity for central and peripheral vision. The velocity discrimination curves plotting jnd’s in velocity, expressed as Weber fractions, as a function of reference velocity were U shaped at all eccentricities. Under almost every stimulus condition the increase in jnd in velocity with increasing eccentricity was significantly larger at low reference velocities than at high reference velocities. Consequently the shift toward higher velocities with increasing eccentricity was much clearer for the lower end of the velocity-discrimination curve than for the upper end. These results are in agreement with the predictions derived from the response characteristics of velocity-tuned cells. Control experiments involving direction discrimination have shown that the impossibility of making fine velocity judgments at high speeds is due not to too weak a contrast for the stimulus motion to be visible but to a limitation in the neural apparatus analyzing velocity.

© 1985 Optical Society of America

History
Original Manuscript: December 18, 1984
Manuscript Accepted: June 18, 1985
Published: November 1, 1985

Citation
Guy A. Orban, Frank Van Calenbergh, Bart De Bruyn, and Hugo Maes, "Velocity discrimination in central and peripheral visual field," J. Opt. Soc. Am. A 2, 1836-1847 (1985)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-2-11-1836

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited