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Lotfipour, Shahrdad; Mojica, Celina; Nakauchi, Sakura; Lipovsek, Marcela; Silverstein, Sarah; Cushman, Jesse; Tirtorahardjo, James; Poulos, Andrew; Elgoyhen, Ana Belén; Sumikawa, Katumi; Fanselow, Michael S.; Boulter, Jim – Learning & Memory, 2017
The absence of a2* nicotinic acetylcholine receptors (nAChRs) in oriens lacunosum moleculare (OLM) GABAergic interneurons ablate the facilitation of nicotine-induced hippocampal CA1 long-term potentiation and impair memory. The current study delineated whether genetic mutations of a2* nAChRs ("Chrna2"[superscript L9'S/L9'S] and…
Descriptors: Brain, Brain Hemisphere Functions, Animals, Long Term Memory
Wiltgen, Brian J.; Sanders, Matthew J.; Ferguson, Carolyn; Homanics, Gregg E.; Fanselow, Michael S. – Learning & Memory, 2005
The [delta] subunit of the GABA[subscript [Alpha]] receptor (GABA[subscript [Alpha]]R) is highly expressed in the dentate gyrus of the hippocampus. Genetic deletion of this subunit reduces synaptic and extrasynaptic inhibition and decreases sensitivity to neurosteroids. This paper examines the effect of these changes on hippocampus-dependent trace…
Descriptors: Conditioning, Inhibition, Fear, Animals
Tinsley, Matthew R.; Quinn, Jennifer J.; Fanselow, Michael S. – Learning & Memory, 2004
Aversive conditioning is an ideal model for studying cholinergic effects on the processes of learning and memory for several reasons. First, deficits produced by selective lesions of the anatomical structures shown to be critical for Pavlovian fear conditioning and inhibitory avoidance (such as the amygdala and hippocampus) resemble those deficits…
Descriptors: Memory, Fear, Classical Conditioning, Inhibition