Localized direction selective responses in the dendrites of visual interneurons of the fly |
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Authors: | Christian Spalthoff Martin Egelhaaf Philip Tinnefeld Rafael Kurtz |
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Institution: | 1.Department of Neurobiology,Bielefeld University,Bielefeld,Germany;2.Angewandte Physik - Biophysik,Ludwig-Maximilians-Universit?t,München,Germany |
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Abstract: | Background The various tasks of visual systems, including course control, collision avoidance and the detection of small objects, require
at the neuronal level the dendritic integration and subsequent processing of many spatially distributed visual motion inputs.
While much is known about the pooled output in these systems, as in the medial superior temporal cortex of monkeys or in the
lobula plate of the insect visual system, the motion tuning of the elements that provide the input has yet received little
attention. In order to visualize the motion tuning of these inputs we examined the dendritic activation patterns of neurons
that are selective for the characteristic patterns of wide-field motion, the lobula-plate tangential cells (LPTCs) of the
blowfly. These neurons are known to sample direction-selective motion information from large parts of the visual field and
combine these signals into axonal and dendro-dendritic outputs. |
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Keywords: | |
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