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  In vivo imaging of calcium accumulation in fly interneurons as elicited by visual motion stimulation

Borst, A., & Egelhaaf, M. (1992). In vivo imaging of calcium accumulation in fly interneurons as elicited by visual motion stimulation. Proceedings of the National Academy of Sciences of the United States of America, 89(9), 4139-4143. doi:10.1073/pnas.89.9.4139.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-0FB2-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-0FB3-0
Genre: Journal Article

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 Creators:
Borst, A1, 2, Author              
Egelhaaf, M1, 2, Author              
Affiliations:
1Former Department Information Processing in Insects, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497801              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: The computation of motion plays a central role in visual orientation. The fly has been successfully used as a model system for analyzing the mechanisms underlying motion detection. Thereby, much attention has been paid to a neuronal circuit of individually identifiable neurons in the third visual ganglion that extracts different types of retinal motion patterns and converts these patterns into specific components of visual orientation behavior. The extended dendritic trees of these large cells are the sites of convergence of numerous spatially distributed local motion-sensitive elements. As is revealed by in vivo microfluorometric imaging, these cells accumulate calcium during activation by visual motion stimulation. The spatiotemporal pattern of calcium distribution shows the following characteristics: (i) calcium accumulation is first spatially restricted to those dendritic branches that are depolarized by the retinotopic input, (ii) during ongoing motion stimulation calcium may also accumulate throughout the cell and, in particular, in regions that do not receive direct synaptic input. These experiments successfully monitor the intracellular distribution of activity-dependent ions in visual interneurons of living animals stimulated by their natural synaptic input.

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 Dates: 1992-05
 Publication Status: Published in print
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 Identifiers: DOI: 10.1073/pnas.89.9.4139
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Title: Proceedings of the National Academy of Sciences of the United States of America
  Other : Proc. Acad. Sci. USA
  Other : Proc. Acad. Sci. U.S.A.
  Other : Proceedings of the National Academy of Sciences of the USA
  Abbreviation : PNAS
Source Genre: Journal
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Publ. Info: Washington, D.C. : National Academy of Sciences
Pages: - Volume / Issue: 89 (9) Sequence Number: - Start / End Page: 4139 - 4143 Identifier: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230