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Dopamine Induces LTP Differentially in Apical and Basal Dendrites through BDNF and Voltage-Dependent Calcium Channels
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Navakkode, Sheeja; Sajikumar, Sreedharan; Korte, Martin; Soong, Tuck Wah – Learning & Memory, 2012
The dopaminergic modulation of long-term potentiation (LTP) has been studied well, but the mechanism by which dopamine induces LTP (DA-LTP) in CA1 pyramidal neurons is unknown. Here, we report that DA-LTP in basal dendrites is dependent while in apical dendrites it is independent of activation of L-type voltage-gated calcium channels (VDCC).…
Descriptors: Basal Reading, Logical Thinking, Neurological Organization, Cognitive Processes
Distinct Single but Not Necessarily Repeated Tetanization Is Required to Induce Hippocampal Late-LTP in the Rat CA1
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Sajikumar, Sreedharan; Navakkode, Sheeja; Frey, Julietta U. – Learning & Memory, 2008
The protein synthesis-dependent form of hippocampal long-term potentiation (late-LTP) is thought to underlie memory. Its induction requires a distinct stimulation strength, and the common opinion is that only repeated tetani result in late-LTP whereas as single tetanus only reveals a transient early-LTP. Properties of LTP induction were compared…
Descriptors: Memory, Logical Thinking, Learning Processes, Animals
Demonstration of Nondeclarative Sequence Learning in Mice: Development of an Animal Analog of the Human Serial Reaction Time Task
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Christie, Michael A.; Hersch, Steven M. – Learning & Memory, 2004
In this paper, we demonstrate nondeclarative sequence learning in mice using an animal analog of the human serial reaction time task (SRT) that uses a within-group comparison of behavior in response to a repeating sequence versus a random sequence. Ten female B6CBA mice performed eleven 96-trial sessions containing 24 repetitions of a 4-trial…
Descriptors: Animal Behavior, Behavioral Science Research, Learning Processes, Sequential Learning