منابع مشابه
Adaptation and gain pool summation: alternative models and masking data
Foley [J. Opt. Soc. Am. A 11 (1994) 1710] has proposed an influential psychophysical model of masking in which mask components in a contrast gain pool are raised to an exponent before summation and divisive inhibition. We tested this summation rule in experiments in which contrast detection thresholds were measured for a vertical 1 c/deg (or 2 c/deg) sine-wave component in the presence of a 3 c...
متن کاملMasking by inaudible sounds and the linearity of temporal summation.
Many natural sounds, including speech and animal vocalizations, involve rapid sequences that vary in spectrum and amplitude. Each sound within a sequence has the potential to affect the audibility of subsequent sounds in a process known as forward masking. Little is known about the neural mechanisms underlying forward masking, particularly in more realistic situations in which multiple sounds f...
متن کاملNoisy templates explain area summation
The noisy template model is a variant of an ideal detector for a signal known except for contrast. The ideal detector cross-correlates the stimulus with a normalised template which is matched to the known signal pattern. The noisy template model simply adds noise to the matched template every time it is cross-correlated with the signal. This paper outlines the predictions of the noisy template ...
متن کاملTitle: Area Summation in Human Visual System: Psychophysics, Fmri and Modeling. 1 Abbreviated Title: Area Summation in Human Vision 2
Title: Area summation in human visual system: psychophysics, fMRI and modeling. 1 Abbreviated title: Area summation in human vision 2 Authors and author addresses: 3 4 Lauri Nurminen, Brain Research Unit, Low Temperature Laboratory, and Advanced 5 Magnetic Imaging Centre, Helsinki University of Technology, Espoo, Finland; 6 Department of Psychology, University of Helsinki, Helsinki, Finland 7 8...
متن کاملArea summation in human visual system: psychophysics, fMRI, and modeling.
Contextual modulation is a fundamental feature of sensory processing, both on perceptual and on single-neuron level. When the diameter of a visual stimulus is increased, the firing rate of a cell typically first increases (summation field) and then decreases (surround field). Such an area summation function draws a comprehensive profile of the receptive field structure of a neuron, including ar...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2004
ISSN: 1534-7362
DOI: 10.1167/4.10.8