No blindness for things that do not change

Article Abstract:

It is well known that under normal circumstances, human observers are able to detect a visual change (a luminance transient) in the outside world very easily. This study demonstrated that observers are also easily able to detect a nonchanging element if it is located in a display containing multiple elements that do change. That is, a nonchanging element popped out from a display containing multiple changing elements (luminance transients). The efficient detection of the nonchanging element may be due to temporal grouping created by the dynamic character of the stimulus display.

Science & research, Psychological aspects, Figure-ground discrimination

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Our eyes do not always go where we want them to go: capture of the eyes by new objects

Article Abstract:

A visual search task in which observers were asked to make a voluntary, goal-directed saccade to a color-singleton target has been undertaken. The effect of precuing the location of the color-singleton target in reducing the eye movement has also been studied. Findings reveal that human eyes capture events or objects that are not the object of attention of people. New objects on the scene disrupt ongoing goal-directed eye movement and will evoke eye movement toward their direction.

Visual perception, Eye, Eye movements

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Splitting the beam: distribution of attention over noncontiguous regions of the visual field

Article Abstract:

Attention can be flexibly divided on multiple locations in the visual space as long as new objects do not appear among the attended field. This was affirmed in an experiment wherein two separate areas of the visual fields were precued and subjects were asked to decide whether the letters that appeared in these locations matched or mismatched while distractors that primed either of the two responses were presented between the cued locations.

Attention (Psychology), Visual fields, Attention

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