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Adaptive Behavior
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On Cognition as Dynamical Coupling: An Analysis of Behavioral Attractor Dynamics

Alberto Montebelli

University of Skövde, School of Humanities and Informatics, alberto.montebelli{at}his.se

Carlos Herrera

University of Skövde, School of Humanities and Informatics, c.herrera{at}ulster.ac.uk

Tom Ziemke

University of Skövde, School of Humanities and Informatics, tom.ziemke{at}his.se

The interaction of brain, body, and environment can result in complex behavior with rich dynamics, even for relatively simple agents. Such dynamics are, however, often difficult to analyze. In this article, we explore the case of a simple simulated robotic agent, equipped with a reactive neurocontroller and an energy level, which the agent has been evolved to recharge. A dynamical systems analysis shows that a non-neural internal state (energy level), despite its simplicity, dynamically modulates the behavioral attractors of the agent—environment system, such that the robot's behavioral repertoire is continually adapted to its current situation and energy level. What emerges is a dynamic, non-deterministic, and highly self-organized action selection mechanism, originating from the dynamical coupling of four systems (non-neural internal states, neurocontroller, body, and environment) operating at very different timescales.

Key Words: evolutionary robotics • dynamical systems • embodied cognition • internal robotics • neuromodulation

Adaptive Behavior, Vol. 16, No. 2-3, 182-195 (2008)
DOI: 10.1177/1059712308089180
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