Real and optimal neural images in early vision
Article Abstract:
A theory of how visual images are processed stood up well when actual measurements of neural images in the fly visual system were matched against what the theory predicted. The theory holds that all visual systems pare down redundant images by passing them through a noisy prefilter and a neural filter. A final noisy channel stage extracts as much information as possible from the remaining images. Tests involving the large monopolar cells in the blowfly visual system provided evidence that a three-stage process of this sort does exist.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
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Rapid colour-specific detection of motion in human vision
Article Abstract:
The human visual system has color-specific motion detectors that analyze very short stimuli. The direction of motion of a color pattern is detectable after a short exposure of 17 milliseconds, when the contrast is many times the threshold value. The detection of the direction of motion of a color pattern with a static black and white (luminance) mask is easier than the direction detection of a luminance pattern in the luminance mask. The analysis of a color pattern is, however, more difficult than that of luminance patterns in humans.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Stabilizing gaze in flying blowflies
Article Abstract:
Vision becomes blurred with a quickly moving gaze, affecting the way in which three-dimensional structures are seen. Calliphora vicina blowflies turn the head and thorax quickly during flight, but the effects of thorax movements on vision are reduced by turning the head later and more quickly than the thorax. The triphasic movement of the head in the yaw direction, may maximize periods of stable gaze, by reducing the periods of gaze shift.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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