Post on 01-Jan-2016
The same physical stimulus can be interpreted differently depending on perceptual set, e.g., context effects.
When is the middle character the letter B and when is it the number 13?
Perceptual Set Context Effects
Bottom-Up and Top-Down Processing working together
Word Perception Connectionist Model
Features(lines)
Letters
Words
I
B
Bat
_at
Flying Animal
Figure 2-24 (p. 73)Example of stimuli used in the PET scan study of processing words. See text for explanation.
Word Perception Neuropsychological Perspective
Direct Perception vs. Constructivist Approach
Biological motion http://www.psico.univ.trieste.it/labs/acn-lab
/eng_p/e051c1m1_curr.html
Visual Agnosia
Associative Visual Agnosia Can copy, but unaware what it
is; cannot assign meaning to object
Difficulty in transferring visual info into words
Apperceptive Visual Agnosia Cannot recognize by shape Cannot copy drawings Often involves ‘prosopagnosia’
http://scien.stanford.edu/class/psych221/projects/06/cukur/intro_files/image021.jpg
Identification of Faces and Members of Categories
Prosopagnosia
The Fusiform Face Area:
http://www.psy.vanderbilt.edu/faculty/gauthier/picts/mona_lisa.jpg