Eighteen subjects performed two visual searchtasks, characterized by different cognitive load,which required to identify a vertical segmentbetween other segments, all with the same orientation,and a distractor that could be presented ornot. By varying the orientation of both targets anddistractors, it was manipulated the salience and thesimilarity between them, deemed considerable forbottom-up and top-down components respectively.Results showed a salience by similarity interaction,suggesting that, while in high cognitive loadconditions endogenous and exogenous components can act independently, when the task requires mildattentional resources, the two processes give rise toan interaction.
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|Titolo:||Automatic and voluntary orienting of attention in visual search: two independent processes?|
|Data di pubblicazione:||2008|
|Appartiene alla tipologia:||01h Abstract in rivista|