Universität zu Köln

Strube-Bloss, Martin F., Nawrot, Martin P. and Menzel, Randolf (2016). Neural correlates of side-specific odour memory in mushroom body output neurons. Proc. R. Soc. B-Biol. Sci., 283 (1844). LONDON: ROYAL SOC. ISSN 1471-2945

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Abstract

Humans and other mammals as well as honeybees learn a unilateral association between an olfactory stimulus presented to one side and a reward. In all of them, the learned association can be behaviourally retrieved via contralateral stimulation, suggesting inter-hemispheric communication. However, the underlying neuronal circuits are largely unknown and neural correlates of across-brain-side plasticity have yet not been demonstrated. We report neural plasticity that reflects lateral integration after side-specific odour reward conditioning. Mushroom body output neurons that did not respond initially to contralateral olfactory stimulation developed a unique and stable representation of the rewarded compound stimulus (side and odour) predicting its value during memory retention. The encoding of the reward-associated compound stimulus is delayed by about 40 ms compared with unrewarded neural activity, indicating an increased computation time for the read-out after lateral integration.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Strube-Bloss, Martin F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nawrot, Martin P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Menzel, Randolf UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-252542
DOI:	10.1098/rspb.2016.1270
Journal or Publication Title:	Proc. R. Soc. B-Biol. Sci.
Volume:	283
Number:	1844
Date:	2016
Publisher:	ROYAL SOC
Place of Publication:	LONDON
ISSN:	1471-2945
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HONEYBEE APIS-MELLIFERA; EXTRINSIC NEURONS; BRAIN; PLASTICITY; INSECT; CONNECTIONS; BODIES; TRACES; INPUT Multiple languages Biology; Ecology; Evolutionary Biology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/25254