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Perception chapter 6
Terms in this set (37)
The process of focusing on some objects while ignoring others. Attention can enhance the processing of the attended object.
Occurs when stimulus salience causes an involuntary shift of attention. For example, attention can be captured by movement.
A serious developmental disorder in which one of the major symptoms is the withdrawal of contact from other people. People with autism typically do not make eye contact with others and have difficulty telling what emotions others are experiencing in social situations.
A condition resulting from damage to a person's parietal lobe. One characteristic of this syndrome is an inability to focus attention on individual objects.
The process by which features such as color, form, motion, and location are combined to create our perception of a coherent object. Binding can also occur across senses, as when sound and vision are associated with the same object.
The problem of how neural activity in many separated areas in the brain is combined to create a perception of a coherent object.
Difficulty in detecting differences between two visual stimuli that are presented one after another, often with a short blank stimulus interposed between them. Also occurs when part of a stimulus is changed very slowly.
A visual search task in which it is necessary to search for a combination (or conjunction) of two or more features on the same stimulus to find the target. An example of a conjunction search would be looking for a horizontal green line among vertical green lines and horizontal red lines.
Attention without looking. Seeing something "out of the corner of your eye" is an example of covert attention.
An increase in looking time that occurs when a stimulus is changed. This response is used in testing infants to see whether they can differentiate two stimuli.
An experimental procedure in which subjects are required to carry out simultaneously a central task that demands attention and a peripheral task that involves making a decision about the contents of a scene.
Feature integration theory
A theory proposed by Treisman to explain how an object is broken down into features and how these features are recombined to result in a perception of the object.
A visual search task in which a person can find a target by searching for only one feature. An example would be looking for a horizontal green line among vertical green lines.
The brief pause of the eye that occurs between eye movements as a person scans a scene.
Focused attention stage (FIT)
The second stage of processing in Feature Integration Theory in which the features are combined. According to Treisman, this stage requires focused attention.
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