Color processing in the medulla of the bumblebee (Apidae: Bombus impatiens)

Paulk, Angelique C., Dacks, Andrew M. and Gronenberg, Wulfila (2009) Color processing in the medulla of the bumblebee (Apidae: Bombus impatiens). The Journal of Comparative Neurology, 513 5: 441-456. doi:10.1002/cne.21993


Author Paulk, Angelique C.
Dacks, Andrew M.
Gronenberg, Wulfila
Title Color processing in the medulla of the bumblebee (Apidae: Bombus impatiens)
Journal name The Journal of Comparative Neurology   Check publisher's open access policy
ISSN 0021-9967
1096-9861
Publication date 2009-04
Sub-type Article (original research)
DOI 10.1002/cne.21993
Volume 513
Issue 5
Start page 441
End page 456
Total pages 16
Editor Clifford B. Saper
Place of publication Hoboken, NJ, United States
Publisher John Wiley & Sons
Collection year 2010
Language eng
Subject 970106 Expanding Knowledge in the Biological Sciences
060805 Animal Neurobiology
Abstract The mechanisms of processing a visual scene involve segregating features (such as color) into separate information channels at different stages within the brain, processing these features, and then integrating this information at higher levels in the brain. To examine how this process takes place in the insect brain, we focused on the medulla, an area within the optic lobe through which all of the visual information from the retina must pass before it proceeds to central brain areas. We used histological and immunocytochemical techniques to examine the bumblebee medulla and found that the medulla is divided into eight layers. We then recorded and morphologically identified 27 neurons with processes in the medulla. During our recordings we presented color cues to determine whether response types correlated with locations of the neural branching patterns of the filled neurons among the medulla layers. Neurons in the outer medulla layers had less complex color responses compared to neurons in the inner medulla layers and there were differences in the temporal dynamics of the responses among the layers. Progressing from the outer to the inner medulla, neurons in the different layers appear to process increasingly complex aspects of the natural visual scene.
Keyword Insect brain
Temporal response properties
Adaptation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 18 February 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Queensland Brain Institute Publications
ERA 2012 Admin Only
 
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Created: Fri, 01 May 2009, 12:27:36 EST by Debra McMurtrie on behalf of Queensland Brain Institute