PMID- 16220195 OWN - NLM STAT- MEDLINE DCOM- 20131205 LR - 20051012 IS - 0371-0874 (Print) IS - 0371-0874 (Linking) VI - 57 IP - 5 DP - 2005 Oct 25 TI - Characteristic neuronal firing interspike intervals in laterodorsal thalamic nuclei induced by tetanization of rat caudate putamen: possible relations to hippocampal electroencephalogram changes. PG - 573-86 AB - The purpose of the present work was to study the effect of acute tetanization of the right caudate putamen nucleus (ATRC) on single neuronal interspike intervals (ISIs) in both laterodorsal thalamic nuclei (LDi), and electroencephalogram (EEG) wave interpeak intervals (IPIs) in both hippocampi (HPCi). Experiments were performed on 21 male Sprague-Dawley rats weighing 150~250 g. The seizures were induced by the ATRC (60 Hz, 2 s, 0.4~0.6 mA). Quadruple recordings were simultaneously carried out: two for single unit recordings from both LDi, and two for EEG recordings from both HPCi. The ATRC induced: (1) An interactive epileptic electrical network reconstructed in bilateral HPCi, which was driven by primary afterdischarges of single LD neuron. (2) A symmetric mirror-like ISI spot distribution of the LD neuronal firing before and after tetanus. (3) Gradually prolonged LD neuronal discharge intermittence was coherent with synchronous hippocampal EEG activities on the contralateral side. (4) Single LD neuronal spikes were phase- and time-locked to 20~25 Hz gamma oscillations in contralateral HPC. It suggests a particular temporal code patterning of single LD neuronal firing and its relationships to hippocampal EEG wave code in time series, the latter implies the LD neuronal encoding mechanisms of ATRC-induced epileptic electrical network in bilateral HPCi. FAU - Liu, Qing AU - Liu Q AD - Departments of Physiology, School of Medicine, Wuhan University, Wuhan 430071, China. FAU - Han, Dan AU - Han D FAU - Wang, Sheng AU - Wang S FAU - Zou, Zu-Yu AU - Zou ZY LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Sheng Li Xue Bao JT - Sheng li xue bao : [Acta physiologica Sinica] JID - 20730130R SB - IM MH - Action Potentials/physiology MH - Animals MH - Caudate Nucleus/*physiology MH - Electric Stimulation/methods MH - *Electroencephalography MH - Epilepsy/etiology/physiopathology MH - Hippocampus/*physiology MH - Lateral Thalamic Nuclei/*physiology MH - Male MH - Nerve Net/*physiology MH - Neurons/physiology MH - Rats MH - Rats, Sprague-Dawley MH - Reaction Time/physiology EDAT- 2005/10/13 09:00 MHDA- 2013/12/16 06:00 CRDT- 2005/10/13 09:00 PHST- 2005/10/13 09:00 [pubmed] PHST- 2013/12/16 06:00 [medline] PHST- 2005/10/13 09:00 [entrez] PST - ppublish SO - Sheng Li Xue Bao. 2005 Oct 25;57(5):573-86.