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date: 15 April 2021

Abstract and Keywords

Visual perception seems effortless to us, yet it is the product of elaborate signal processing in intricate brain circuits. Apart from vertebrates, arthropods represent another major animal group with sophisticated visual systems in which the underlying mechanisms can be studied. Arthropods feature identified neurons and other experimental advantages, facilitating an understanding of circuit function at the level of individual neurons and their synaptic interactions. Here, focusing on insect and crustacean species, we summarize and connect our current knowledge in four related areas of research: (1) elementary motion detection in early visual processing; (2) the detection of higher level visual features such as optic flow fields, small target motion and object distance; (3) the integration of such signals with other sensory modalities; and (4) state-dependent visual motion processing.

Keywords: arthropod, compound eye, visual system, optic lobe, motion detection, visually guided behavior

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