Spatial frequency discrimination: Visual long-term memory or criterion setting?

A long-term sensory memory is believed to account for spatial frequency discrimination when reference and test stimuli are separated by long intervals. We test an alternative proposal: that discrimination is determined by the range of test stimuli, through their entrainment of criterion-setting proc...

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Veröffentlicht in:Vision research (Oxford) 1998-02, Vol.38 (4), p.557-572
Hauptverfasser: Lages, Martin, Treisman, Michel
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description A long-term sensory memory is believed to account for spatial frequency discrimination when reference and test stimuli are separated by long intervals. We test an alternative proposal: that discrimination is determined by the range of test stimuli, through their entrainment of criterion-setting processes. Experiments 1 and 2 show that the 50% point of the psychometric function is largely determined by the midpoint of the stimulus range, not by the reference stimulus. Experiment 3 shows that discrimination of spatial frequencies is similarly affected by orthogonal contextual stimuli and parallel contextual stimuli and that these effects can be explained by criterion-setting processes. These findings support the hypothesis that discrimination over long intervals is explained by the operation of criterion-setting processes rather than by long-term sensory retention of a neural representation of the stimulus.
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source MEDLINE; Access via ScienceDirect (Elsevier); EZB-FREE-00999 freely available EZB journals
subjects Adult
Biological and medical sciences
Discrimination
Discrimination (Psychology) - physiology
Female
formula omitted
Fundamental and applied biological sciences. Psychology
Humans
Male
Memory - physiology
Pattern Recognition, Visual - physiology
Perception
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychometrics
Sensory memory
Sequential dependencies
Spatial frequency
Time Factors
Vision
title Spatial frequency discrimination: Visual long-term memory or criterion setting?
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