Synaptic plasticity dynamics in the hippocampal-prefrontal pathway in vivo

被引：9
|
作者：
Takita, Masatoshi [1 ,2 ]
Izaki, Yoshinori [3 ]
Kuramochi, Masahito [1 ,2 ]
Yokoi, Hiroshi [4 ]
Ohtomi, Michiko [2 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, Cognit & Action Res Grp, Tsukuba, Ibaraki 3058566, Japan
[2] Toho Univ, Dept Biomol Sci, Fac Sci, Funabashi, Chiba 274, Japan
[3] St Marianna Univ, Sch Med, Dept Physiol, Kawasaki, Kanagawa 213, Japan
[4] Univ Electrocommun, Dept Man Machine Integrated Syst, Tokyo, Japan
来源：
NEUROREPORT | 2010年 / 21卷 / 01期
关键词：
electrical stimulation; intermediate hippocampus; long-term potentiation; paired-pulse facilitation; rats; LONG-TERM POTENTIATION; DIRECT PROJECTION; AMMONS HORN; CORTEX; RAT; INHIBITION; AFFERENTS; ROLES;
D O I：
10.1097/WNR.0b013e3283344949
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
We examined the effect of long-term potentiation (LTP) on paired-pulse responses across varied stimulus intensities and interstimulus intervals (ISIs), at ascending synapses from the intermediate and ventral hippocampus to the medial prefrontal cortex in urethane-anesthetized rats. LTP significantly shifted the median effective stimulus towards lower intensities in the intermediate route, and increased at 25-ms ISI the paired-pulse response, which was inversely proportional to the stimulus intensity. In the ventral route, the paired-pulse response varied with ISI rather than intensity, and increased at 50-ms and 100-ms ISI after LTP. The intermediate synaptic plasticity significantly exhibited total amplifier dynamics with wide ranges of frequency at lower intensity and intensity at 100-ms ISI in contrast to the ventral one. NeuroReport 21:68-72 (C) 2010 Wolters Kluwer Health vertical bar Lippincott Williams & Wilkins.
引用
收藏
页码：68 / 72
页数：5
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