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Theta-burst stimulation (TBS) induces short-term potentiation (STP) plus two types of transcriptionally-independent forms of long-term potentiation (LTP), termed LTP1 and LTP2. We have compared the susceptibility of these three types of synaptic plasticity to depotentiation, induced by low frequency stimulation (LFS; 2 Hz for 10 min) at the Schaffer collateral-commissural pathway in area CA1 of adult rat hippocampal slices. In interleaved experiments, STP and LTP were induced by three episodes of either compressed or spaced TBS (cTBS or sTBS). LFS had a more pronounced effect on the LTP induced by the cTBS. One traditional interpretation of these results is a difference in the time-dependent immunity against depotentiation. We suggest an alternative explanation: LFS rapidly reverses STP to reveal a slowly developing LTP. The cTBS protocol induces LTP1 that is moderately sensitive to depotentiation. The sTBS induces an additional component of LTP (LTP2) that is resistant to depotentiation.
Pubmed ID: 30943994 RIS Download
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WinLTP is a stimulation, data acquisition and on-line analysis electrophysiological software for studying Long-Term Potentiation (LTP), Long-term Depression (LTD), and related phenomena. WinLTP is multitasking and simultaneously runs 1) LTP stimulus/acquisition/analyzing sweeps with protocol scripting, and 2) continuous acquisition saving Axon Binary Files (abf). WinLTP runs on Windows PCI bus computers and uses National Instruments PCI M-Series boards and Axon Instruments'' Digidata 1320A and 1322A data acquisition boards. Other software that can use the M-Series boards includes Axograph Scientific''s AxoGraph X, WaveMetrics'' IGOR, National Instruments'' LabView, John Dempster''s Strathclyde Electrophysiology Suite (WinWCP and WinEDR), Silver lab''s Nclamp, and QUB data acquisition.
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