The processing of color, motion, and stimulus timing are anatomically segregated in the bumblebee brain

Paulk, Angelique, C., Phillips-Portillo, James, Dacks, Andrew M., Fellous, Jean-Marc and Gronenberg, Wulfila (2008) The processing of color, motion, and stimulus timing are anatomically segregated in the bumblebee brain. The Journal of Neuroscience, 28 25: 6319-6332. doi:10.1523/JNEUROSCI.1196-08.2008

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Author Paulk, Angelique, C.
Phillips-Portillo, James
Dacks, Andrew M.
Fellous, Jean-Marc
Gronenberg, Wulfila
Title The processing of color, motion, and stimulus timing are anatomically segregated in the bumblebee brain
Journal name The Journal of Neuroscience   Check publisher's open access policy
ISSN 1529-2401
Publication date 2008-06
Sub-type Article (original research)
DOI 10.1523/JNEUROSCI.1196-08.2008
Open Access Status File (Publisher version)
Volume 28
Issue 25
Start page 6319
End page 6332
Total pages 13
Place of publication New York, U.S.
Publisher Society for Neuroscience
Language eng
Subject 1109 Neurosciences
Formatted abstract
Animals use vision to perform such diverse behaviors as finding food, interacting socially with other animals, choosing a mate, and avoiding predators. These behaviors are complex and the visual system must process color, motion, and pattern cues efficiently so that animals can respond to relevant stimuli. The visual system achieves this by dividing visual information into separate pathways, but to what extent are these parallel streams separated in the brain? To answer this question, we recorded intracellularly in vivo from 105 morphologically identified neurons in the lobula, a major visual processing structure of bumblebees (Bombus impatiens). We found that these cells have anatomically segregated dendritic inputs confined to one or two of six lobula layers. Lobula neurons exhibit physiological characteristics common to their respective input layer. Cells with arborizations in layers 1–4 are generally indifferent to color but sensitive to motion, whereas layer 5–6 neurons often respond to both color and motion cues. Furthermore, the temporal characteristics of these responses differ systematically with dendritic branching pattern. Some layers are more temporally precise, whereas others are less precise but more reliable across trials. Because different layers send projections to different regions of the central brain, we hypothesize that the anatomical layers of the lobula are the structural basis for the segregation of visual information into color, motion, and stimulus timing.
Keyword Insect
Color
Motion
Precision
Reliability
Lobula
Bumblebees
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Queensland Brain Institute Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 45 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 51 times in Scopus Article | Citations
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Created: Tue, 22 Dec 2009, 08:51:09 EST by Elissa Saffery on behalf of Queensland Brain Institute