Receptor and interneuron light-adaptation in the dragonfly visual system.
نویسنده
چکیده
Intracellular recordings show that the receptors and second-order interneurons of the dragonfly compound eye change their sensitivity in response to maintained illumination. Comparison of receptor with interneuron shows that neural mechanisms act to ensure that the modulation of interneuron membrane potential that is set up by contrast changes is independent of background intensity.
منابع مشابه
Polarization sensitivity as a visual contrast enhancer in the Emperor dragonfly larva, Anax imperator.
Polarization sensitivity (PS) is a common feature of invertebrate visual systems. In insects, PS is well known for its use in several different visually guided behaviours, particularly navigation and habitat search. Adult dragonflies use the polarization of light to find water but a role for PS in aquatic dragonfly larvae, a stage that inhabits a very different photic environment to the adults,...
متن کاملLight deprivation related changes of strategy selection in the radial maze
During the early postnatal age environmental signals underlie development of sensory systems. The visual system is considered as an appropriate system for evaluation of the role of sensory experience in postnatal development of sensory systems. In this study we evaluated the effect of visual deprivation on the usage of visuospatial cues in navigation of radial arm maze. Light (LR) and dark rear...
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متن کاملLight deprivation related changes of strategy selection in the radial maze
During the early postnatal age environmental signals underlie development of sensory systems. The visual system is considered as an appropriate system for evaluation of the role of sensory experience in postnatal development of sensory systems. In this study we evaluated the effect of visual deprivation on the usage of visuospatial cues in navigation of radial arm maze. Light (LR) and dark rear...
متن کاملPolarization sensitivity as a visual contrast enhancer in the Emperor dragonfly larva , Anax imperator ( Leach , 1815 )
Polarization sensitivity (PS) is a common feature of invertebrate visual systems. In insects, PS is well known for its use in several different visually guided behaviours, particularly navigation and habitat search. Adult dragonflies use the polarization of light to find water but a role for PS in aquatic dragonfly larvae, a stage that inhabits a very different photic environment to the adults,...
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عنوان ژورنال:
- Zeitschrift fur Naturforschung. Section C, Biosciences
دوره 30 2 شماره
صفحات -
تاریخ انتشار 1975