| 研究実績の概要 |
Previous work suggested that cuttlefish camouflage to their environments by choosing one of a small number of camouflage patterns that best match prominent background image statistics. We built a high-resolution filming array and designed computational techniques to describe cuttlefish camouflage quantitatively and objectively for the first time. Using these high resolution filming and computational techniques, we found that cuttlefish camouflage is instead 1) high dimensional, 2) able to precisely match higher order background image statistics, 3) has dynamics characterized by a meandering search, most likely utilizing visual feedback, 4) is composed of groups of chromatophores that are flexibly reconfigured during different camouflage trajectories, and 5) differs substantially from simple visual threat behaviors. These results will guide mechanistic studies of this remarkable texture-matching system.
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