Suprathreshold temporal-frequency discrimination in the fovea and the periphery

Sarah J. Waugh, Robert F. Hess

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


To address the question of whether temporal-frequency information in the fovea and the periphery is processed in fundamentally different ways we measured temporal-frequency-discrimination thresholds for spatiotempo- rally narrow-band stimuli presented at suprathreshold contrast. Temporal-frequency-discrimination thresh-olds are similar (within a factor of 2) at the fovea and at 30° in the periphery. We use a line-element approach and three spatiotemporally separable temporal mechanisms to model foveal and peripheral data with the same degree of fidelity. These findings suggest that not only are the front-end temporal mechanisms in the fovea and periphery likely to be similar but also the way in which their outputs are combined at more central sites is the same.

Original languageEnglish
Pages (from-to)1199-1212
Number of pages14
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Issue number4
Publication statusPublished - 1 Apr 1994
Externally publishedYes


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