منابع مشابه
Viewing the dynamics and control of visual attention through the lens of electrophysiology
How we find what we are looking for in complex visual scenes is a seemingly simple ability that has taken half a century to unravel. The first study to use the term visual search showed that as the number of objects in a complex scene increases, observers' reaction times increase proportionally (Green & Anderson, 1956). This observation suggests that our ability to process the objects in the sc...
متن کاملIntegrating electrophysiology and neuroimaging of spatial selective attention to simple isolated visual stimuli
Visual-spatial attention involves modulations of activity in human visual cortex as indexed by electrophysiological and functional neuroimaging measures. Prior studies investigating the time course and functional anatomy of spatial attention mechanisms in visual cortex have used higher-order discrimination tasks with complex stimuli (e.g. symbol matching in bilateral stimulus arrays, or letter ...
متن کاملOn the control of visual spatial attention: evidence from human electrophysiology.
We used electrophysiological methods to track the deployment of visual spatial attention while observers were engaged in concurrent central attentional processing, using a variant of the attentional blink paradigm. Two visual targets (T1, T2) were presented at a stimulus onset asynchrony of either 200 ms or 800 ms. T1 was a white digit among white letters presented on a dark background using ra...
متن کاملElectrophysiology of auditory-visual speech integration
Twenty-six native English Speakers identified auditory (A), visual (V), and congruent and incongruent auditory-visual (AV) syllables while undergoing electroencephalography (EEG) in three experiments. In Experiment 1, unimodal (A, V) and bimodal (AV) stimuli were presented in separate blocks. In Experiment 2, the same stimuli were pseudo-randomized in the same blocks, providing a replication of...
متن کاملVisual attention
For more than a century, psychologists and physiolo-gists such as William James, Wilhelm Wundt, Johannes M€ uller and Hermann von Helmholtz have proposed that attention plays an important role in perception: it is necessary for effortful visual processing, and may be the ''glue'' that binds simple visual features into an object. In more recent times, many psychologists, including Ulric Neisser,...
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ژورنال
عنوان ژورنال: Frontiers in Human Neuroscience
سال: 2008
ISSN: 1662-5161
DOI: 10.3389/conf.neuro.09.2009.01.004