Nonlinear combination of luminance excursions during flicker, simultaneous contrast, afterimages and binocular fusion
نویسندگان
چکیده
منابع مشابه
Nonlinear combination of luminance excursions during flicker, simultaneous contrast, afterimages and binocular fusion
The changes in apparent brightness or color, induced into a test spot by a surround, can be greatly enhanced either by flickering the test spot between two luminances, or by binocularly fusing a pair of test spots of different luminances. Simultaneous contrast, in which a white surround makes a grey spot look darker, is greatly enhanced if the spot (not the surround) flickers between black and ...
متن کاملNonlinearities in the binocular combination of luminance and contrast
We studied the rules by which visual responses to luminous targets are combined across the two eyes. Previous work has found very different forms of binocular combination for targets defined by increments and by decrements of luminance, with decrement data implying a severe nonlinearity before binocular combination. We ask whether this difference is due to the luminance of the target, the lumin...
متن کاملBinocular combination of luminance profiles
We develop and test a new two-dimensional model for binocular combination of the two eyes' luminance profiles. For first-order stimuli, the model assumes that one eye's luminance profile first goes through a luminance compressor, receives gain-control and gain-enhancement from the other eye, and then linearly combines the other eye's output profile. For second-order stimuli, rectification is ad...
متن کاملInteractions between simultaneous contrast and coloured afterimages.
Coloured afterimages were obtained after fixation of a neutral grey spot on a coloured surround The colour of the spot afterimage was similar to that of the previous surrounding area. and was found to have two components which could be elicited independently. Firstly. complementary afterimages were generated by the subjective contrast colour which was induced into the grey spot during the adapt...
متن کاملBinocular fusion of luminance, color, motion and flicker – Two eyes are worse than one
UNLABELLED How much information is conserved, or discarded, as it travels through the visual system? A target (an oriented bar) was defined by dark grey spots embedded in light spots for the left eye, and by light grey spots embedded in dark spots for the right eye. With one eye open, the target bars were clearly visible, but with both eyes open the light and dark spots fused binocularly into m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Vision Research
سال: 1998
ISSN: 0042-6989
DOI: 10.1016/s0042-6989(97)00167-3