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mushroom body

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mushroom body

Postby timcheng » Tue Jan 10, 2006 3:24 pm

what does mushroom body in a bee mean?
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Postby Carolynparsons » Thu Jan 12, 2006 6:32 pm

“Mushroom bodies are complex neuropils made up of thousands of neurons called Kenyon cells. Numerous experiments have shown that these neuropils play a vital role in learning and memory. In the honey bee (Apis mellifera) two basic Kenyon cells have been identified, Class II and Class I. These neurons are identified and differentiated by the location of their cell bodies, morphology, and unique efferent connections. Previous accounts of Kenyon cell morphology in the honey bee have shown that Class I Kenyon cells have typically bifurcated axons, extending into a medial and vertical lobe. Accounts of morphology of Class II Kenyon cells vary, however, with some authors reporting Class I-like branched axons and others reporting single, unbranched axons projecting only to the vertical lobe. In this experiment pressure injection of florescent dyes into the mushroom bodies was used to confirm the morphology of Class I cells and clarify that of Class II cells. Two subpopulations of Class II cells are described, one with unbranched axons and one with tiny medial axons that form a distinct subdivision of the anterior medial lobe. The branched cells appear to persist unchanged from the larva, while the unbranched cells may result from an axonal reorganization event similar to that described in the fruit fly Drosophila melanogaster.”
Andy I. Abrams, Sarah M. Farris, Nicholas J. Strausfeld (2003)
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Postby ushishir » Sat Jan 14, 2006 10:31 am

It's a very interesting part of the insect brain and there is alot of research into it, working out how it controls the memory of smells.

There is a 3d bee brain atlas so if you want to see what the mushroom body looks like go here: http://www.neurobiologie.fu-berlin.de/beebrain/

There is a nice review of mushroom bodies here:

http://www.ini.unizh.ch/~pfmjv/InsectCo ... review.pdf
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Postby flint » Mon Jan 16, 2006 9:48 pm

they are also called the "corpus pedunculatum"

I believe they are found in the protocerebrum but I threw out the notes containing that information so Im not sure
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