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Article Dans Une Revue Psychological Review Année : 2023

The Gated Cascade Diffusion Model: An Integrated Theory of Decision Making, Motor Preparation, and Motor Execution

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This article introduces an integrated and biologically inspired theory of decision making, motor preparation, and motor execution. The theory is formalized as an extension of the diffusion model, in which diffusive accumulated evidence from the decision-making process is continuously conveyed to motor areas of the brain that prepare the response, where it is smoothed by a mechanism that approximates a Kalman–Bucy filter. The resulting motor preparation variable is gated prior to reaching agonist muscles until it exceeds a particular level of activation. We tested this gated cascade diffusion model by continuously probing the electrical activity of the response agonists through electromyography in four choice tasks that span a variety of domains in cognitive sciences, namely motion perception, numerical cognition, recognition memory, and lexical knowledge. The model provided a good quantitative account of behavioral and electromyographic data and systematically outperformed previous models. This work represents an advance in the integration of processes involved in simple decisions and sheds new light on the interplay between decision and motor systems.
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Dates et versions

hal-03924556 , version 1 (05-01-2023)
hal-03924556 , version 2 (04-05-2023)
hal-03924556 , version 3 (18-08-2023)
hal-03924556 , version 4 (08-01-2024)
hal-03924556 , version 5 (17-01-2024)

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Edouard Dendauw, Nathan Evans, Gordon Logan, Emmanuel Haffen, Djamila Bennabi, et al.. The Gated Cascade Diffusion Model: An Integrated Theory of Decision Making, Motor Preparation, and Motor Execution. Psychological Review, In press, ⟨10.1037/rev0000464⟩. ⟨hal-03924556v5⟩
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