Adaptive Control of Odor-Guided Locomotion: Behavioral Flexibility as an Antidote to Environmental Unpredictability1
Belanger Jim H.; Willis Mark A.
Журнал:
Adaptive Behavior
Дата:
1996
Аннотация:
Many animals find distant unseen resources by guiding their locomotion
through fluid media, using olfactory information acquired from plumes of
odorant molecules issuing from the resource of interest. This behavior occurs
in birds and fish, but much of our knowledge of it derives from flying insects,
especially moths. It is a highly integrative behavior, requiring not only the
integration of olfactory information with a behavioral strategy to maintain
contact with the odor plume, but also an ability to detect the direction of fluid
flow that is carrying the odor cue. The temporal-spatial structure of the odor
plume is determined by the fluid dynamics of the environment, and it
profoundly affects the behavior. Thus, the success of animals (or artificial
agents) is determined by an interaction between sensory input and internally
generated behaviors. We have implemented behavioral-level simulations of
odor-modulated moth flight to understand how the properties of the odor
stimulus and the behavioral system interact to result in successful source
location. Even simple reflexive models can track predictable, laminar-flow
plumes, but only models with internally generated behaviors can track
unpredictable, turbulent plumes. The "best" behavioral strategy depends on
both the structure of the odor stimulus and an agent's performance limits.
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