The slow time-course of visual attention

Article Abstract:

The visual identification of objects is a sustained rather than a high-speed process, one in which representations of the objects affect subsequent behavior. A previously identified object interferes with the identification of other objects for almost half a second or more. This is much more than that predicted by the high-speed model for visual attention. The number of objects identified determines the duration of interference. Even nontargets interfere with subsequent identification. The interference is probably due to a competition among the objects for the limited visual processing resources.

Interference (Perception), Reaction time, Reaction time (Psychology)

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Differences between objects and nonobjects in visual extinction: a competition for attention

Article Abstract:

Stimuli having objective attributes are more powerful competitors for attention than the less organized stimuli having nonobjective attributes. The biased attention towards good objects does not indicate their simple advantage over the scramble, instead they function as good competitors. Subjects with damaged right parietal cortex, when asked to detect the presence or absence of any object in right and left visual fields, exhibited an advantage for good objects in the field corresponding to the damaged cortex. But advantage is evident only when there is another stimulus in the normal field.

Neurophysiology, Selectivity (Psychology)

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Priming from the attentional blink: a failure to extract visual tokens but not visual types

Article Abstract:

Two experiments on visual perception were conducted to investigate the fate of targets that are missed during an attentional blink (AB) in rapid serial visual presentation tasks. Results imply that the repetition blindness effect reversed to become a facilitatory priming effect, suggesting that AB may operate at high levels of processing. Furthermore, processing can proceed to semantic levels without allowing the blinked target to become consciously reportable.

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