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CH. 4 Recognizing Objects (Word Recognition (Factors Influencing…
CH. 4 Recognizing Objects
Word Recognition
Factors Influencing Recognition:
Tachistoscope
Mask
Primes
Repetition priming
Word-superiority effect
- words that are seen frequently, are easier to perceive than words that have been viewed recently
Well-formedness
- letters are seen more easily if the letter is seen in context, than it is if the letter is seen on its own
Feature Nets
Object Recognition
Types of brain damage
Associative Agnosia
- patients can see the object, but cant link it to visual knowledge; they can draw from memory
Apperceptive Agnosia
- patients recognize an objects shape, color, and position, but they cant perceive all of the elements together to perceive the intact object
Early considerations
Bottom-up (or data-driven) processing
- Stimulus-driven effects
Top-down (or concept-driven) processing
- Knowledge- or expectation-driven effects
Importance of features
:
Building blocks
Commonalities for variable objects
Play a role in visual search
Integrative agnosia
- Difficulty in judging how more than one
feature is bound together in objects (parietal cortex damage)
Different Objects, Different Recognition
Systems?
Prosopagnosia
- known as face blindness.
Holistic processing
