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Active sensory systems : ウィキペディア英語版
Active sensory systems

Active sensory systems are sensory receptors that are activated by probing the environment with self-generated energy. Examples include echolocation of bats and dolphins and insect antennae. Using self-generated energy allows more control over signal intensity, direction, timing and spectral characteristics. By contrast, passive sensory systems involve activation by ambient energy (that is, energy that is preexisting in the environment, rather than generated by the user). For example, human vision relies on using light from the environment.
Active sensory systems receive information with or without direct contact. ''Teleceptive active sensory systems'' collect information by directing propagating energy and detecting objects using cues such as time delay and intensity of return signal. Examples include echolocation of bats and electrosensory detection of electric fish. ''Contact active sensory systems'' use physical contact between stimuli and organism. Insect antennae and whiskers are examples of contact active sensory systems.
==Examples==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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