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The IDA Model’s Cognitive Cycle

The IDA Model’s Cognitive Cycle. Stan Franklin Workshop on the Role of Consciousness in Memory May 1,2004—FedEx Institute of Technology. The IDA Model. Conceptual model of cognition

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The IDA Model’s Cognitive Cycle

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  1. The IDA Model’s Cognitive Cycle Stan Franklin Workshop on the Role of Consciousness in Memory May 1,2004—FedEx Institute of Technology

  2. The IDA Model • Conceptual model of cognition • Computational model plus additional designed but unimplemented features • A uniform model of cognition such as SOAR, Act-R, C&I • Models a broad swath of cognitive functions

  3. IDA’s Cognitive Cycle • Specifies the role of consciousness in cognition • Clarifies the relationship between consciousness and the various memories • Makes explicit the role of consciousness in recruiting relevant resources • Provides a tool for the fine-grained analysis of various cognitive tasks

  4. Perceiving • Preconscious perception • External or internal • Processing of portions of the stimuli • Construction of meaning • Recognition • Categorization

  5. Store Percept in WM • Percept stored in Working Memory’s preconscious buffers • Visuo-spatial sketchpad • Phonological loop • Buffers may contain earlier contents also • Decay time measured in seconds

  6. Local Associations • Cued by the contents of preconscious WM buffers • Retrieves local associations from • Transient episodic memory • Declarative memory • Contents of WM plus local associations occupy • Baddeley’s episodic buffer • Ericsson and Kintsch’s Long-term Working Memory

  7. Attention codelets view LTWM Form coalitions with information codelets Vie to bring various portions of contents to consciousness Coalition from a previous cycle can win Factors include Relevancy Importance Urgency Insistence Recency Competition for Consciousness

  8. Conscious Broadcast • Coalition with highest average activation is chosen • Is said to be in the spotlight, or to occupy the global workspace • The information content of the coalition is broadcast to all codelets • GW theory postulates this broadcast as the moment of phenomenal consciousness

  9. Learning Occurs • Memory updated using broadcast contents • Perceptual memory updated • Transient episodic memory updated • Procedural memory updated • Feelings and emotions modulate learning • Declarative memories consolidated later off line

  10. Setting Goal Context Hierarchy • Relevant behavior codelets respond to broadcast • Instantiate goal context hierarchy (behavior stream) if needed • Bind variables using information from conscious broadcast • Send environmental activation to appropriate behaviors

  11. Action Chosen • Behaviors (goal contexts) get activation from • Drives (feelings and emotions) • Environment (external or internal) • Other behaviors • The single behavior is chosen that • Is executable • activation over threshold • higher activation than other such behaviors

  12. Action Taken • Chosen behavior binds variables in its behavior codelets • Then activates its behavior codelets including at least one expectation codelet • These behavior codelets perform the task of the behavior • This action may effect the external or internal environment

  13. Cognitive Cycle Processing • Hypothesis — Like IDA’s, human cognitive processing is via an iterating sequence of Cognitive Cycles • Duration — Each cognitive cycle takes roughly 200 ms with steps 1 through 5 occupying about 80 ms • Cascading — Several cycles may have parts running simultaneously in parallel • Seriality — Consciousness maintains serial order and the illusion of continuity • Start — Cycle may start with action selection instead of perception

  14. Goals and Actions • Conscious goal (intention) selection • Consciously chosen over several cycles • Consciously mediated actions • Use the environment to inform the action • Internal or external action • Automatized actions • Performed unconsciously

  15. Example of Goal Selection and Subsequent Actions • Conscious goal selection • Go to the fridge for orange juice • Choice between go or wait, orange juice or coke or water • Consciously mediated action • Find and grasp the handle • Unconscious, automated actions • Pull the refrigerator door open

  16. Web and Email Addresses • Stan Franklin • franklin@memphis.edu • www.cs.memphis.edu/~franklin/ • ‘Conscious’ Software Research Group • csrg.cs.memphis.edu/

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