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分辨学习中大鼠ＰＰ－ＣＡ_３突触效应有习得性ＬＴＰ产生，进一步观察到ＭＦ－ＣＡ_３及Ｃｏｍｍ－ＣＡ_３也同步地产生习得性ＬＴＰ，表明几种输入突触都产生习得性ＬＴＰ，而ＭＦ－ＣＡ_３突触效应增强的程度则较Ｃｏｍｍ－ＣＡ_３的为大（Ｐ＜０．０１）。海马ＣＡ_３注入印防己毒素能易化ＰＰ－ＣＡ_３突触习得性ＬＴＰ的产生，工作发现一侧海马ＣＡ_３注印防己毒素，易化对侧ＭＦ－ＣＡ_３突触习得性ＬＴＰ的产生，表明两侧海马ＣＡ_３区在其习得性ＬＴＰ的形成上是相互协同的。
Differentially-learned synaptic effects in rat PP-CA_3 were associated with acquired LTP production. It was further observed that both MF-CA_3 and Comm-CA_3 also produced learned LTP synchronously, suggesting that several input synapses all produce learned LTP, The extent of enhancement of MF-CA 3 synaptic effect was greater than that of Comm-CA 3 (P <0.01). The injection of picrotoxin into the hippocampus CA_3 could facilitate the generation of synaptic-derived LTP of PP-CA_3. The production of synaptotagmin-derived LTP from the hippocampal CA_3 was found in the hippocampal CA_3. The hippocampal CA_3 region is synergistic with the formation of its acquired LTP.