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Masking by spatially-modulated gratings
- Source :
- Vision Research. 23:1621-1629
- Publication Year :
- 1983
- Publisher :
- Elsevier BV, 1983.
-
Abstract
- Contrast- or quasi-frequency-modulated masker gratings consisting of three high frequency components (8.8, 11 and 13.2 c/deg) affect the detectability of a 2.2 c/deg signal grating, to an extent that is strongly dependent upon the relative phase between signal and masker. Unmodulated high frequency maskers have no such phase-dependent effects. This paper explores the possibility that the visual system's nonlinear response to luminance is responsible for these phenomena. A specific hypothesis is proposed according to which the effects of the spatially modulated maskers are due entirely to a distortion product at 2.2 c/deg caused by the visual nonlinearity. Although some of the predictions of this hypothesis are borne out by the experimental findings, others are contradicted.
- Subjects :
- Physics
Light
genetic structures
Distortion product
business.industry
Acoustics
Perceptual Masking
Grating
behavioral disciplines and activities
Luminance
Sensory Systems
Form Perception
Photometry
Ophthalmology
Nonlinear system
Optics
Pattern Recognition, Visual
Form perception
Sensory Thresholds
Sensory threshold
Humans
Relative phase
business
psychological phenomena and processes
Subjects
Details
- ISSN :
- 00426989
- Volume :
- 23
- Database :
- OpenAIRE
- Journal :
- Vision Research
- Accession number :
- edsair.doi.dedup.....d147bd0c5bf9bd13fc64abf1b824d5e1