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Central localisation of plasticity involved in appetitive conditioning in Lymnaea
journal contribution
posted on 2023-06-08, 10:09 authored by Volko A Straub, Benjamin J Styles, Julie S Ireland, Michael O'Shea, Paul R BenjaminLearning to associate a conditioned (CS) and unconditioned stimulus (US) results in changes in the processing of CS information. Here, we address directly the question whether chemical appetitive conditioning of "Lymnaea" feeding behavior involves changes in the peripheral and/or central processing of the CS by using extracellular recording techniques to monitor neuronal activity at two stages of the sensory processing pathway. Our data show that appetitive conditioning does not affect significantly the overall CS response of afferent nerves connecting chemosensory structures in the lips and tentacles to the central nervous system (CNS). In contrast, neuronal output from the cerebral ganglia, which represent the first central processing stage for chemosensory information, is enhanced significantly in response to the CS after appetitive conditioning. This demonstrates that chemical appetitive conditioning in "Lymnaea" affects the central, but not the peripheral processing of chemosensory information. It also identifies the cerebral ganglia of "Lymnaea" as an important site for neuronal plasticity and forms the basis for detailed cellular studies of neuronal plasticity.
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Publication status
- Published
Journal
Learning and MemoryISSN
1074-7427Publisher
Cold Spring Harbor Laboratory PressExternal DOI
Volume
11Page range
787-793Pages
7.0Department affiliated with
- Neuroscience Publications
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- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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