Effects of temporal frequency and contrast on spatial frequency characteristics for disparity threshold

Seungbae Lee, Satoshi Shioiri, Hirohisa Yaguchi

研究成果: Article査読

7 被引用数 (Scopus)

抄録

We measured disparity threshold for identifying the depth direction as a function of spatial frequency with various temporal frequencies and stimulus contrasts using drifting gratings. The results showed that disparity threshold depended little on temporal frequency with the exception of high temporal frequencies (≥ 10 Hz) independently of stimulus contrast. Contrary to temporal frequency, contrast substantially influenced spatial frequency characteristics. The disparity threshold was approximately constant with change in spatial frequency with slight increase at high spatial frequencies for contrasts higher than 0.2 when the threshold is expressed by phase difference between the left and right eye images (phase disparity). The phase disparity threshold had a negative peak at a spatial frequency between 1 and 5 c/deg (band-pass) for contrasts lower than 0.2. We discuss possible differences in the underlying mechanisms to determine disparity threshold below and above temporal frequency of 10 Hz.

本文言語English
ページ(範囲)120-123
ページ数4
ジャーナルOptical Review
10
2
DOI
出版ステータスPublished - 2003 3月 1
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

フィンガープリント

「Effects of temporal frequency and contrast on spatial frequency characteristics for disparity threshold」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル