PMID- 16533555 OWN - NLM STAT- MEDLINE DCOM- 20070424 LR - 20060711 IS - 0303-2647 (Print) IS - 0303-2647 (Linking) VI - 85 IP - 2 DP - 2006 Aug TI - The origin of spontaneous synchronized burst in cultured neuronal networks based on multi-electrode arrays. PG - 137-43 AB - Many neural networks in mammalian central nervous system (CNS) fire single spike and complex spike burst. In fact, the conditions for triggering burst are not well understood. In the paper multi-electrode arrays (MEA) are used to record the spontaneous electrophysiological activities of cultured rat hippocampal neuronal network for a long time. After about 3 weeks culture, a transition from single spike to burst is observed in several networks. All of these spikes fire quickly before burst begins. The firing rate during the burst is lower than that just before the burst, but differences of inter-spike intervals (ISIs) between two firing patterns are not clear. Moreover, the electrical activities on neighboring electrodes show strong synchrony during the burst activities. In a word, the generation of the burst requires that network should have a sufficient level of excitation as well as a balance of synaptic inhibition. FAU - Chen, Chuanping AU - Chen C AD - Key Laboratory of Biomedical Photonics, Ministry of Education, Huazhong University of Science and Technology, Wuhan 430074, China. chchuanp2002@etang.com FAU - Chen, Lin AU - Chen L FAU - Lin, Yunsheng AU - Lin Y FAU - Zeng, Shaoqun AU - Zeng S FAU - Luo, Qingming AU - Luo Q LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060314 PL - Ireland TA - Biosystems JT - Bio Systems JID - 0430773 SB - IM MH - Animals MH - Electrodes MH - Electrophysiology MH - Nerve Net/*physiology MH - Rats MH - Rats, Wistar MH - Substrate Specificity MH - Tissue Culture Techniques EDAT- 2006/03/15 09:00 MHDA- 2007/04/25 09:00 CRDT- 2006/03/15 09:00 PHST- 2005/09/23 00:00 [received] PHST- 2005/12/22 00:00 [revised] PHST- 2005/12/27 00:00 [accepted] PHST- 2006/03/15 09:00 [pubmed] PHST- 2007/04/25 09:00 [medline] PHST- 2006/03/15 09:00 [entrez] AID - S0303-2647(05)00213-3 [pii] AID - 10.1016/j.biosystems.2005.12.006 [doi] PST - ppublish SO - Biosystems. 2006 Aug;85(2):137-43. doi: 10.1016/j.biosystems.2005.12.006. Epub 2006 Mar 14.