The Perception & Action Podcast 564 – Ecological Cognition IV: Decision Making
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Mar 10, 2026 A discussion of decision-making as a behavioral state transition emerging from performer-environment interactions. Demonstrations use finger coordination and gait shifts to show dynamical bifurcations. The ecological view challenges representational, brain-centered explanations and contrasts lab tasks with real sport behavior. The talk highlights affordances, attractors, and how perception, action, and decision-making form an integrated system.
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Decision As Behavioral State Transition
- A decision is a behavioral state transition, a change from one movement solution to another rather than a hidden mental calculation.
- Rob Gray frames decisions as state transitions in movement solution space, e.g., dribbling to passing in basketball.
Finger Phase Switch Demonstrates Decision Bifurcation
- Rapidly increasing finger movement shifts antiphase to in-phase movement, illustrating a decision as a bifurcation in coordination dynamics.
- Rob Gray uses the Haken-Kelso model example and walking-to-running analogy to show attractors and energy costs.
Decisions Emerge From Performer Environment Dynamics
- Ecological dynamics explains decisions via performer-environment interactions without invoking internal representations.
- Rob Gray argues Bayes-style internal models aren't necessary because emergent system dynamics suffice to explain state transitions.