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Biol. Bull. 200: 160-168. (April 2001)
© 2001 Marine Biological Laboratory

Invertebrate-Inspired Sensory-Motor Systems and Autonomous, Olfactory-Guided Exploration

Frank W. Grasso*

Boston University Marine Program, Marine Biological Laboratory, Woods Hole, Massachusetts 02453

The localization of resources in a natural environment is a multifaceted problem faced by both invertebrate animals and autonomous robots. At a first approximation, locomotion through natural environments must be guided by reliable sensory information. But natural environments can be unpredictable, so from time to time, information from any one sensory modality is likely to become temporarily unreliable. Fortunately, compensating mechanisms ensure that such signals are replaced or disambiguated by information from more reliable modalities. For invertebrates and robots to rely primarily on chemical senses has advantages and pitfalls, and these are discussed. The role of turbulence, which makes tracking a single odor to its source a complex problem, is contrasted with the high-fidelity identification of stimulus quality by the invertebrate chemoreceptor and by artificial sensors.




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