9-4-15 PSY 325 48607
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This 2 page Class Notes was uploaded by Alexis Fajardo on Thursday September 17, 2015. The Class Notes belongs to PSY 325 48607 at University of Arizona taught by Kenneth Forster in Fall 2015. Since its upload, it has received 19 views. For similar materials see Cognitive Psychology in cognitive linguistics and psychology at University of Arizona.
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Date Created: 09/17/15
9415 PSY 325 0 Two types of processes affect perception 0 Using knowledge of words in your language to interpret B O C K I The triangle by the third letter makes it difficult to tell whether it is book or bock I Distinguish what you are seeing and what you know it is I Topdown measure the reactions Suppose the stimulus was look or lock 0 Context effects 0 Alternative to topdown system 0 13 or B number or letter I Look at the context and determine that the top row is a sequence of numbers I Concepts of perception in early processes and late processes 0 Recognizing letters and objects 0 Template matching a match b no match letter is tilted 0 Problems for the template approach 0 We can recognize the letter A across wide variation in different sizes Position in the visual field Orientation Poorly formed quotnonstandardquot figureshandwriting Need different templates 0 Makes a template approach to letter recognition impossible 000 0 Why does the template approach fail 0 Trying to design a single template to cover the entire object o A better approach would be to create templates for the elements of the patterns lines angles curves 0 Other evidence for feature templates had the frogs eye and the optic nerve they recorded the movement information in the optic nerve 0 Only responded to a small black dot moving around vigorously If a frog has a highly specialized visual system starts as fully functional system with aws eventually No learning involved at all can only see insects Recorded from cells in the visual cortex of cats Some cells only responded to a vertical line other cells only responded to diagonal line Some cells only responded to curved lines or an angle or a vertical line Moving to the right These are feature detectors turned to very specific stimuli o Perceptual learning 0 We have to learn to see things in the visual aspect Distinction between Q v 0 0 Same object rotated them asked if it s the same Quiz up at 1 45 min Due Monday night