Cholinergic neurotransmission is essential for perirhinal cortical plasticity and recognition memory

E C Warburtin, T Koder, K Cho, Peter V Massey, G Duguid, G R Barker, J P Aggleton, Z I Bashir, M W Brown

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181 Citations (Scopus)

Abstract

We establish the importance of cholinergic neurotransmission to both recognition memory and plasticity within the perirhinal cortex of the temporal lobe. The muscarinic receptor antagonist scopolamine impaired the preferential exploration of novel over familiar objects, disrupted the normal reduced activation of perirhinal neurones to familiar compared to novel pictures, and blocked production of long-term depression (LTD) but not long-term potentiation (LTP) of synaptic transmission in perirhinal slices. The consistency of these effects across the behavioral, systems, and cellular levels of analysis provides strong evidence for the involvement of cholinergic mechanisms in synaptic plastic processes within perirhinal cortex that are necessary for recognition memory.
Original languageEnglish
Pages (from-to)987-996
Number of pages10
JournalNeuron
Volume38
Issue number6
DOIs
Publication statusPublished - 2003

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    Warburtin, E. C., Koder, T., Cho, K., Massey, P. V., Duguid, G., Barker, G. R., Aggleton, J. P., Bashir, Z. I., & Brown, M. W. (2003). Cholinergic neurotransmission is essential for perirhinal cortical plasticity and recognition memory. Neuron, 38(6), 987-996. https://doi.org/10.1016/S0896-6273(03)00358-1