The effect of exposure duration on stereopsis and its dependency on spatial frequency

Seungbae Lee, Satoshi Shioiri, Hirohisa Yaguchi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

To investigate the effect of exposure duration on stereopsis and its spatial frequency dependency, we measured disparity threshold for the depth discrimination varying stimulus exposure duration between 0.05 and 2 s for three spatial frequencies (0.23, 0.94 and 3.75 c/deg). The results showed that disparity threshold decreased with increase in exposure duration up to a certain duration, beyond which it was approximately constant (the duration is called critical duration). The critical duration was about 150 ms for gratings with low and middle spatial frequencies (0.23 and 0.94 c/deg) while the duration was about 750 ms for gratings with high spatial frequency (3.75 c/deg). This suggests that temporal integration property varies dependently on stimulus spatial frequency. We also attempted to relate the spatial frequency dependency of the temporal integration property to the differences in temporal frequency tuning to different spatial frequency stimuli.

Original languageEnglish
Pages (from-to)258-264
Number of pages7
JournalOptical Review
Volume11
Issue number4
DOIs
Publication statusPublished - 2004 Jul 1
Externally publishedYes

Keywords

  • Disparity threshold
  • Exposure duration
  • Spatial frequency
  • Stereo acuity
  • Tuning channel and stereopsis

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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