Increment thresholds against pulsed and steady backgrounds
نویسندگان
چکیده
منابع مشابه
Disparity increment thresholds for gratings.
The classic increment disparity threshold function rises steeply, usually exponentially, with disparity pedestal. Thus a smaller difference in stereoscopic depth can be resolved the nearer it is to the fixation plane. This result has been obtained with relatively broad-bandwidth stimuli. We show here that the increment threshold function for narrow-bandwidth stimuli differs subtly from the clas...
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The multifocal electroretinogram (mfERG) has been commonly used as a method for obtaining objective visual fields. Although qualitative comparisons have been good, quantitative comparisons between the results from mfERG and the results from Humphrey Visual Field Analyser (HVFA) have found variable degrees of agreement depending upon the mfERG response parameter examined and/or the disease studi...
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At low background intensities fovea1 increment thresholds obtained against briefly presented backgrounds are mediated by the initial appearance of the background and increment fields. and at high intensities by a short-term hom~hromati~ afterimage. Masking the afterimages shows that the thresholds mediated by the initial image are a ~ntinuousIy accelerating function of background intensity, whe...
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OBJECTIVE It has been proposed that alcohol might induce within the retina a state akin to dark adaptation. However, the evidence to support this proposal is quite indirect. Another possibility is that alcohol might affect retinal gain control rather than sensitivity. To investigate these proposals psychophysically, we measured dark adaptation functions and increment thresholds with the increme...
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Radial frequency (RF) trajectories are a new class of stimuli that have been developed to study the visual perception of periodic motion (Or et al., 2011). These stimuli are described by a moving dot that traces a distorted path through space with periodic radial deformations whose frequency, amplitude, and phase can be independently specified. Here, we extend Or et al.'s findings by investigat...
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ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 1976
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03199451