Feature integration theory: Difference between revisions

Revision as of 22:12, 18 August 2016

Revision as of 12:50, 3 April 2017

Line 3:

==Stages==

According to Treisman, the first stage of the feature integration theory is the preattentive stage. Perception occursDuring automatically,this unconsciouslystage, effortlessly,different andparts early inof the perceptualbrain process.automatically Duringgathers thisinformation stage,about thebasic objectfeatures is analyzed for details such as(colors, shape, color, orientation and movement, with each) aspectthat beingare processedfound in differentthe areasvisual of the brainfield. The idea that features are automatically separated appears to be counterintuitive; however, we are not aware of this process because it occurs early in perceptual processing, before we become conscious of the object.

The second stage of the feature integration theory is the focused attention stage, where the individual features of an object combine in order to perceive the whole object. In order to combine the individual features of an object, attention is required and selection of that object occurs within a "master map" of locations. The master map of locations contains all of the locations in which features have been detected, with each ___location in the master map having access to the multiple feature maps. When attention is focused at a particular ___location on the map, the features currently in that position are attended to and are stored in "object files". If the object is familiar, associations are made between the object and prior knowledge, which results in identification of that object. In support of this stage, researchers often refer to patients suffering from [[Balint's syndrome]]. Due to damage in the parietal lobe, these people are unable to focus attention on individual objects. Given a stimulus that requires combining features, people suffering from Balint's syndrome are unable to focus attention long enough to combine the features, providing support for this stage of the theory.