Attentional resolution and the locus of visual awareness
Article Abstract:
A study to determine the locus of visual awareness in the brain was conducted using a simple but innovative experiment. The study involved generating a master image onto computer screen and slowly masking the image with peripheral visual inputs. The subjects were unable to determine the orientation of the master image once it has been clouded by peripheral images. The results suggest that spatial resolution is limited by an attentional filter acting beyond the primary visual cortex.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Predicting the present
Article Abstract:
Motion extrapolation, which compensates for neural delays, enables the mind to see things not as they were but as they probably are. This form of predictive perception works only with objects that are undergoing smooth change. During extrapolation, the location at which an object is perceived is extrapolated ahead, along its path. Thus, the location is simply reassigned to a region away from the receptive-field center in the direction of the preferred motion.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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When colours moves
Article Abstract:
An experiment by S.J. Cropper and A.M. Derrington shows that color is one of the attributes of moving objects. Earlier studies had postulated that color did not contribute to motion perception. These views were based on the impression that moving colored stimuli were an outcome of residual responses in the luminance pathway. However, Cropper and Derrington's study reveals motion responds independently to both color and luminance stimuli.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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