According to Treisman, in the first stage of visualthe processingFeature termedIntegration Theory is the preattentive stage,. severalPerception primaryoccurs visualautomatically, featuresunconsciously, are processedeffortlessly, and represented with separate "feature maps" that are later integrated into "saliency maps" that can be accessedearly in order to direct attention to the mostperceptual conspicuous areasprocess. During this stage, the object is analyzed withfor details such as shape, color, orientation and movement, inwith mind.each Eachaspect of these aspects isbeing processed in different areas of the brain. The main idea that a processed object's features are automatically separated mayappears seemto counter-intuitivebe becausecounterintuitive; however, we perceiveare thenot whole object insteadaware of seeingthis eachprocess separatebecause aspect;it however,occurs this analysis happensearly in the perceptual processprocessing, before we are evenbecome conscious of the object.
The second stage involvedof inthe perceivingFeature anIntegration objectTheory is the focused attention stage., Thiswhere stage involves integratingthe individual features of an object combine in order to perceive the whole object, or recognize it if enough information is presented. If the object is familiar, associations are made between the object and prior knowledge in order to aid in recognition. In support of this stage, researchers often refer to patients suffering from [[BálintBalint's syndrome]]. sufferers,Due whoto asdamage ain consequencethe of [[parietal lobe]], damagethese seempeople incapableare ofunable properlyto focusingfocus attention on individual objects. When given stimuli that requires combining features, lendsufferers credencefrom Bailint's syndrome are unable to thisfocus two-stagedattention modellong enough to combine the features, providing support for this stage of attentionthe theory.
[[File:FITstages.png|alt=The stages of Feature Integration Theory.]]