AN EXAMPLE OF AN EARLY COMPUTER MODEL: PANDEMONIUM

CONSIDER THE FOLLOWING PROBLEM:

SOMETHING IS PRESENTED TO YOU VISUALLY AND YOU "RECOGNIZE" THIS AS A BLUEJAY (THE BIRD, NOT A MEMBER OF THE TEAM THAT CHOKES). THAT IS YOU GO FROM A VISUAL DISPLAY TO A CLASSIFICATION, WHICH YOU CAN EVEN NAME

HOW DO WE PROCEED IN SOLVING THIS PROBLEM IN "PATTERN PERCEPTION"

PANDEMONIUM WAS CONSTRUCTED TO BE PSYCHOLOGICALLY REAL. MADE SEVERAL ASSUMPTIONS. (1) PATTERN PERCEPTION INVOLVED A SET OF MORE BASIC STEPS OR STAGES (2) GOING FROM ONE STAGE TO THE NEXT PROCEEDED SERIALLY (i.e., A STAGE HAD TO BE COMPLETED, AND THE RESULT OF THE RESULTS OF THE PROCESSING OF THAT STAGE FED INTO THE NEXT STEP) AND (3) PROCESSING WITHIN A STAGE OCCURRED IN PARALLEL
 
 
INPUT-> IMAGE  ->
MODULE

Encode visual pattern

COMPUTATIONAL->
MODULE

Extract and match features in LTM

COGNITIVE->
MODULE

Combination of features

DECISION
MODULE

Make a Decision



note: a bottom-up mechanism (contrast with top-down process); what is role of context or expectations for instance

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