PMID- 28113518 OWN - NLM STAT- MEDLINE DCOM- 20171025 LR - 20191210 IS - 1940-9990 (Electronic) IS - 1932-4545 (Linking) VI - 11 IP - 1 DP - 2017 Feb TI - Optogenetics in Silicon: A Neural Processor for Predicting Optically Active Neural Networks. PG - 15-27 LID - 10.1109/TBCAS.2016.2571339 [doi] AB - We present a reconfigurable neural processor for real-time simulation and prediction of opto-neural behaviour. We combined a detailed Hodgkin-Huxley CA3 neuron integrated with a four-state Channelrhodopsin-2 (ChR2) model into reconfigurable silicon hardware. Our architecture consists of a Field Programmable Gated Array (FPGA) with a custom-built computing data-path, a separate data management system and a memory approach based router. Advancements over previous work include the incorporation of short and long-term calcium and light-dependent ion channels in reconfigurable hardware. Also, the developed processor is computationally efficient, requiring only 0.03 ms processing time per sub-frame for a single neuron and 9.7 ms for a fully connected network of 500 neurons with a given FPGA frequency of 56.7 MHz. It can therefore be utilized for exploration of closed loop processing and tuning of biologically realistic optogenetic circuitry. FAU - Junwen Luo AU - Junwen Luo FAU - Nikolic, Konstantin AU - Nikolic K FAU - Evans, Benjamin D AU - Evans BD FAU - Na Dong AU - Na Dong FAU - Xiaohan Sun AU - Xiaohan Sun FAU - Andras, Peter AU - Andras P FAU - Yakovlev, Alex AU - Yakovlev A FAU - Degenaar, Patrick AU - Degenaar P LA - eng GR - BB/L018268/1/Biotechnology and Biological Sciences Research Council/United Kingdom PT - Journal Article DEP - 20160817 PL - United States TA - IEEE Trans Biomed Circuits Syst JT - IEEE transactions on biomedical circuits and systems JID - 101312520 RN - 0 (Ion Channels) RN - Z4152N8IUI (Silicon) SB - IM MH - Ion Channels/*chemistry MH - *Models, Neurological MH - *Neural Networks, Computer MH - *Optogenetics MH - *Silicon EDAT- 2017/01/24 06:00 MHDA- 2017/10/27 06:00 CRDT- 2017/01/24 06:00 PHST- 2017/01/24 06:00 [pubmed] PHST- 2017/10/27 06:00 [medline] PHST- 2017/01/24 06:00 [entrez] AID - 10.1109/TBCAS.2016.2571339 [doi] PST - ppublish SO - IEEE Trans Biomed Circuits Syst. 2017 Feb;11(1):15-27. doi: 10.1109/TBCAS.2016.2571339. Epub 2016 Aug 17.