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- W2000267061 abstract "The medial septal nucleus regulates the physiology and emergent functions (e.g., memory formation) of the hippocampal formation. This nucleus is particularly rich in cholinergic receptors and is a putative target for the development of cholinomimetic cognitive enhancing drugs. A large number of studies have demonstrated that direct intraseptal drug infusions can produce amnestic or promnestic effects. While a few studies have examined the effects of direct intraseptal infusion of cholinomimetics on spatial memory performance (with drug on-board at the time of testing), the effects of post-acquisition infusions have not been assessed. We hypothesized that post-acquisition intraseptal infusion of cholinomimetics, by promoting hippocampal theta and suppressing the occurrence of hippocampal sharp waves, may disrupt the long-term retention and consolidation of memory. The present study examined the effects of intraseptal infusion of the cholinergic agonist carbachol in a delayed-non-match-to-sample radial maze task. Treatments were administered immediately following (within 1 min) the sample session with a retention session 2 h later. Carbachol infusions (12.5-125 ng in 0.5 microl) produced a linear dose-dependent decrease in correct entries and increase in retroactive errors, without any change in proactive errors or latency-per-choice. These findings suggest that post-acquisition intraseptal cholinergic treatments can produce amnesia. These findings are discussed with regard to multi-stage models of hippocampal-dependent memory formation and the further development of therapeutic strategies in the treatment of mild cognitive impairment as well as age-related cognitive decline and Alzheimer's dementia." @default.
- W2000267061 created "2016-06-24" @default.
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- W2000267061 creator A5015678200 @default.
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- W2000267061 date "2004-01-01" @default.
- W2000267061 modified "2023-10-01" @default.
- W2000267061 title "Intraseptal infusion of the cholinergic agonist carbachol impairs delayed-non-match-to-sample radial arm maze performance in the rat" @default.
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- W2000267061 doi "https://doi.org/10.1002/hipo.10200" @default.
- W2000267061 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15224982" @default.
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