منابع مشابه
Pop-out from abrupt visual onsets
We report a novel psychophysical paradigm that distinguishes the information present in abrupt stimulus onset from that in the following display. The task is to pick the one odd item from a set added to a pre-existing background of similar items. When all new items are added simultaneously, observers are impaired even at distinguishing one red item amongst several green ones. An asynchrony of a...
متن کاملVisual marking beside the mark: prioritizing selection by abrupt onsets.
In a standard visual marking experiment, observers are presented with a display containing one set of elements (old elements) followed after a certain time interval by a second set of elements (new elements). The task of observers is to search for a target among the new elements. Typically, the time to find the target depends only on the number of new elements in the display and not on the numb...
متن کاملAbrupt visual onsets and selective attention: voluntary versus automatic allocation.
The hypothesis that abrupt visual onsets capture attention automatically, as suggested by Yantis and Jonides (1984) was tested in four experiments. A centrally located cue directed attention to one of several stimulus positions in preparation for the identification of a target letter embedded in an array of distractor letters. In all experiments, one stimulus (either the target or one of the di...
متن کاملWhen are abrupt onsets found efficiently in complex visual search? Evidence from multielement asynchronous dynamic search.
Previous work has found that search principles derived from simple visual search tasks do not necessarily apply to more complex search tasks. Using a Multielement Asynchronous Dynamic (MAD) visual search task, in which high numbers of stimuli could either be moving, stationary, and/or changing in luminance, Kunar and Watson (M. A Kunar & D. G. Watson, 2011, Visual search in a Multi-element Asyn...
متن کاملPerceptual Learning of Pop-out and the Primary Visual Cortex
I propose that perceptual learning of tasks to detect targets among uniform background items involves changing intra-cortical interactions in the primary visual cortex (V1). This is the case for tasks that rely mainly on bottom-up saliency to guide attention to the task relevant locations quickly, and rely less on top-down knowledge of the stimuli or on other strategies. In particular, suppress...
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ژورنال
عنوان ژورنال: Vision Research
سال: 2004
ISSN: 0042-6989
DOI: 10.1016/s0042-6989(04)00220-2