Document Detail


Differences in neuronal activity explain differences in memory forming abilities of different populations of Lymnaea stagnalis.
MedLine Citation:
PMID:  22146779     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The ability to learn and form long-term memory (LTM) can enhance an animal's fitness, for example, by allowing them to remember predators, food sources or conspecific interactions. Here we use the pond snail, Lymnaea stagnalis, to assess whether variability between natural populations (i.e. strains) in memory forming capabilities correlates with electrophysiological properties at the level of a single neuron, RPeD1. RPeD1 is a necessary site of LTM formation of aerial respiratory behaviour following operant conditioning. We used strains from two small, separate permanent ponds (TC1 and TC2). A comparison of the two populations showed that the TC1 strain had enhanced memory forming capabilities. Further, the behavioural phenotype of enhanced memory strain was explained, in part, by differences in the electrophysiology of RPeD1. Compared to RPeD1 from the naive TC2 strain, RPeD1 from the TC1 strain has both a decreased resistance and decreased excitability. Moreover, 24h after a single 0.5h training session, those membrane properties, as well as the firing and bursting rate, decrease further in the TC1 strain but not in the TC2 strain. The initial differences in RPeD1 properties in the TC1 strain coupled with their ability to further change these properties with a single training session suggests that RPeD1 neurons from the TC1 strain are "primed" to rapidly form memory.
Authors:
Marvin H Braun; Kai Lukowiak; Vikram Karnik; Ken Lukowiak
Related Documents :
23596249 - Evaluation of vancomycin susceptibility testing for methicillin-resistant staphylococcu...
22023239 - Detection of methicillin-resistant staphylococcus pseudintermedius with commercially av...
21844259 - Characterization of escherichia coli isolates from laying hens with colibacillosis on 2...
23508429 - A new approach of real time polymerase chain reaction in detection of vancomycin-resist...
21626209 - Intrinsic and inducible resistance to hydrogen peroxide in bifidobacterium species.
21887639 - Isolation and analyses of uranium tolerant serratia marcescens strains and their utiliz...
16602469 - Nosocomial blood stream infections in imam khomeini hospital, urmia, islamic republic o...
19748199 - Emergence of multiresistant variants of the community-acquired methicillin-resistant st...
20141159 - Elastic deformation in ceria nanorods via a fluorite-to-rutile phase transition.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-11-30
Journal Detail:
Title:  Neurobiology of learning and memory     Volume:  -     ISSN:  1095-9564     ISO Abbreviation:  -     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-12-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9508166     Medline TA:  Neurobiol Learn Mem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Affiliation:
Hotchkiss Brain Institute, Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada T2N 4N1.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Oxygen extrusion from amidate ligands to generate terminal Ta[double bond, length as m-dash]O units ...
Next Document:  Acupuncture for chemotherapy-induced peripheral neuropathy (CIPN): a pilot study using neurography.