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- W2023013885 endingPage "128" @default.
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- W2023013885 abstract "The induction of long-term potentiation (LTP) in hippocampal CA1 pyramidal cells requires a rise in postsynaptic intracellular Ca2+ concentration ([Ca2+]i). To determine the time for which Ca2+ must remain elevated to induce LTP, the photolabile Ca2+ buffer diazo-4 was used to limit the duration of the rise in postsynaptic [Ca2+]i following a tetanus. The affinity of diazo-4 for Ca2+ increases approximately 1600-fold upon flash photolysis, permitting almost instantaneous buffering of [Ca2+]i without disturbing resting [Ca2+]i prior to the flash. Photolysis of diazo-4 1 s following the start of the tetanus blocked LTP, while delaying photolysis for more than 2 s had no discernible effect on LTP. Photolyzing diazo-4 at intermediate delays (1.5-2 s) or reducing photolysis of diazo-4 often resulted in short-term potentiation (STP). These results indicate that a tetanus-induced rise in postsynaptic [Ca2+]i lasting at most 2-2.5 s is sufficient to generate LTP. Smaller increases or shorter duration rises in [Ca2+]i may result in STP." @default.
- W2023013885 created "2016-06-24" @default.
- W2023013885 creator A5041585906 @default.
- W2023013885 creator A5046481259 @default.
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- W2023013885 date "1992-07-01" @default.
- W2023013885 modified "2023-10-03" @default.
- W2023013885 title "Temporal limits on the rise in postsynaptic calcium required for the induction of long-term potentiation" @default.
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- W2023013885 doi "https://doi.org/10.1016/0896-6273(92)90227-5" @default.
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