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. 16, Iss. 10 — Oct. 1, 1999
  • pp: 2334–2342

Sampling limits and critical bandwidth for letter discrimination in peripheral vision

Roger S. Anderson and Larry N. Thibos  »View Author Affiliations


JOSA A, Vol. 16, Issue 10, pp. 2334-2342 (1999)
http://dx.doi.org/10.1364/JOSAA.16.002334


View Full Text Article

Enhanced HTML    Acrobat PDF (964 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We develop and test two functional hypotheses based on the sampling theory of visual resolution that might account for letter acuity in peripheral vision. First, a letter smaller than the acuity limit provides insufficient veridical energy for performing the task, and, second, the available veridical energy is masked by increased amounts of visible but aliased energy. These two hypotheses make opposite predictions about the effect of low-pass filtering on letter acuity, which we tested experimentally by using filtered letters from the tumbling-E alphabet. Our results reject the masking hypothesis in favor of the energy insufficiency hypothesis. Additional experiments in which high-pass-filtered letters were used permitted the isolation of a critical band of spatial frequencies, which is necessary and sufficient for achieving maximum visual acuity. This critical band varied with the particular pair of letters to be discriminated but was in the range 0.9–2.2 cycles per letter.

© 1999 Optical Society of America

OCIS Codes
(330.1070) Vision, color, and visual optics : Vision - acuity
(330.1880) Vision, color, and visual optics : Detection
(330.5510) Vision, color, and visual optics : Psychophysics

History
Original Manuscript: August 3, 1998
Revised Manuscript: May 24, 1999
Manuscript Accepted: May 24, 1999
Published: October 1, 1999

Citation
Roger S. Anderson and Larry N. Thibos, "Sampling limits and critical bandwidth for letter discrimination in peripheral vision," J. Opt. Soc. Am. A 16, 2334-2342 (1999)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-16-10-2334

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