02-12 Lecture Slides (Final)

Pandemonium model n similar to the pandemonium model

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: d superiority effect nicely illustrates the importance of top- down processes n༆  Different types of visual recognition disorders exist ¨༊  Interactive activation model of word recognition ¨༊  Alexia (words), apperceptive and associative agnosias (objects), and prosopagnosia (faces) n༆  The visual recognition of three types of patterns (words, objects, and faces) is supported by two subsystems n༆  Face processing relies heavily on holistic analysis ¨༊  Holistic analysis subsystem and analysis- by- parts subsystem Word Superiority Effect (Sperling, 1960) Very Brief Flash WORK WORK RWOK Worst Best ? K D How can we explain the word superiority effect? à༎ Interactive activation model of word recognition 3 2/12/13 Interactive Activation Model Interactive Activation Model vs. Pandemonium Model n༆  Similar to the Pandemonium model in that: ¨༊  There are different levels (e.g., features, letters, etc.) ¨༊  Each node (= demon) does its own job Interactive Activation Model vs. Pandemonium Model n༆  Different from the Pandemonium model in that: ¨༊  Competing nodes try to inhibit one another ¨༊  It has bi- directional flow of information (bottom- up & top- down) 4 2/12/13 WORK Word Level K WORD Letter Level D Feature Level Excitatory Connections WORD Inhibitory Connections WORK Word Level K Letter Level D Feature Level WORK WORD WORK Word Level K Letter Level D Feature Level WORK 5 2/12/13 WORD WORK Word Level K Letter Level D Feature Level WORK WORD WORK Word Level K Letter Level D Feature Level “It must be a K, not a D!” WORD WORK K D Word Level No top- down support from the word Letter Level level! Feature Level WORK 6 2/12/13 WORD WORK K D W...
View Full Document

This note was uploaded on 02/18/2014 for the course PSYC 2145 taught by Professor Cheriking during the Spring '07 term at Colorado.

Ask a homework question - tutors are online