Perception and Action
Know that attention can be deployed several ways.
Be able to define feature-based, location-based, and object-based attention.
Attention can be deployed several ways and is required for conjunction search tasks.
Not everything just jumps out at you.
- Basic features, like color, orientation, direction of motion serve as natural segmentation cues.
- More complex tasks, such as “find the T in with the L’s”, require attention.
- The parietal cortex appears to be necessary for this.
Loads of psychophysical and electrophysiological experiments demonstrate three strategies:
- Feature-based attention: you can look for a particular feature anywhere.
– Ex. Look for something that is black, metal, and has a diamond design.
- Spatial attention: you can look in a particular place for anything.
– Ex. Look at the top right of the photo.
- Object-based attention: you can deploy attention along an object, even if it’s partially occluded.
– Ex. Look at the street lamps on the bridge in the photo.
Cheryl Olman PSY 3031 Detailed Outline
Provided by: University of Minnesota
Download for free at http://vision.psych.umn.edu/users/caolman/courses/PSY3031/
License of original source: CC Attribution 4.0