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Cognitive functions such as learning and memory are widely believed to depend on patterns of short‐ and long‐term synaptic plasticity. Factors, such as acute stress, which affect learning and memory, may do so by altering patterns of synaptic plasticity in distinct neural circuits. Numerous...
Recent observations have caused a drastic shift in the conception of the hippocampus as a homogeneous structure that subserves cognitive functions, either spatial maps or short term episodic memory, to a structure that is associated with both cognitive and emotional functions. In fact, the...
An increased hippocampal neurogenesis has been observed in Alzheimer disease (AD), the most common neurodegenerative disorder characterized with accumulation of β‐amyloid (Aβ) and hyperphosphorylated tau (p‐tau). Studies in transgenic mouse models suggest that the amyloidosis suppresses adult...
In previous work, we showed that adult rats that were reared socially for 3 months in a complex (village) environment retained allocentric spatial memory for that environment following hippocampal lesions (Winocur et al., (2005) Nat Neurosci 8:273–275). In the present series of experiments, we...
Memories are initially stored in a labile state and are subject to modification by a variety of treatments, including disruption of hippocampal function. We infused a sodium channel blocker (or CNQX) to inactivate the rat dorsal hippocampus reversibly for 1 week following training on a task of...
The aim was to investigate treatment effects of the antidepressant imipramine on the markers of neuronal plasticity. We investigated changes in neuron and synapse numbers in a rat strain that displays a genetic susceptibility to depressive behavior, the Flinders Sensitive and Resistant Lines...
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