Chapter

Mushroom Body of the Honeybee

Jürgen Rybak and Randolf Menzel

in Handbook of Brain Microcircuits

Published on behalf of Oxford University Press

Published in print August 2010 | ISBN: 9780195389883
Published online September 2012 | e-ISBN: 9780199965137 | DOI: http://dx.doi.org/10.1093/med/9780195389883.003.0044
Mushroom Body of the Honeybee

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The honeybee mushroom bodies (MBs) are high order central brain neuropils that communicate with all sensory modalities via inputs at the calyces and mixed inputs and outputs along their two lobes. The dendrites of the intrinsic neurons (Kenyon cells) are either widefield (type KI) or narrow-banded (type KII), and participate in a microcircuit of the calyx to which second or higher order sensory and recurrent γ-aminobutyric acid (GABA) as well as modulatory neurons contribute. The MBs are well studied with respect to olfactory coding, learning and memory formation. Type II Kenyon cells exhibit non-associative and associative plasticity during appetitive olfactory conditioning. An identified output neuron of the MB, the PE1, reduces its odor response to the conditioned odor. Associative LTP was found in PE1 following concurrent tetanic stimulation of Kenyon cells and depolarization of PE1.

Chapter.  2203 words.  Illustrated.

Subjects: Development of the Nervous System

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