Performance-gated deliberation: A context-adapted strategy in which urgency is opportunity cost
Fig 3
PGD agent performs the tokens task for periodic context switching.
(A) A tokens task trial. Left: Tokens jump from a center to a peripheral region (gray circles). Right: The tokens difference, Nt, evolves as a random walk that accelerates according to α (here 3/4) post-decision time, tdec. The trial duration is T, which includes an inter-trial interval. (B) Decision dynamics in cost space obtained from evidence dynamics in (A). Commitment cost trajectories (gray lattice; thick gray: trial-averaged) start at and end at 0. Trajectory from (A) shown in black. tdec (black cross) is determined by the crossing of the commitment and deliberation cost. (C) Incentive strength switches between two values every 300 trials. (D) Expected rewards filtered on τlong (
, purple) and τcontext (
, green). Black dashed lines from bottom to top are ρα=1/4, ρ, and ρα=3/4.