Citation: XU Sheng-Wei, WANG Li, SONG Xian-Teng, ZHANG Song, WANG Mi-Xia, YU Ping, MAO Lan-Qun, CAI Xin-Xia. Synchronous Detection of Rat Neural Spike Firing and Neurochemical Signals Based on Dual-mode Recording Instrument[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(9): 1458-1464. doi: 10.11895/j.issn.0253-3820.160108 shu

Synchronous Detection of Rat Neural Spike Firing and Neurochemical Signals Based on Dual-mode Recording Instrument

XU Sheng-Wei ^1,2, ,
WANG Li ^1,2 ,
SONG Xian-Teng ^1,2 ,
ZHANG Song ^1,2 ,
WANG Mi-Xia ¹ ,
YU Ping ^2,3 ,
MAO Lan-Qun ^2,3 ,
CAI Xin-Xia ^1,2

1.
State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
2.
Graduate School of Chinese Academy of Sciences, Beijing 100190, China
3.
Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

Received Date: 19 February 2016
Revised Date: 19 May 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (Nos. 61527815, 31500800, 61501426, 61471342)

Figures(7)

A dual-mode recording system used for synchronous detection of neuroeletrical and neurochemical signals was developed, and a dual-mode synchronous detection experiment was carried out using the instrument. The device comprised 64-channel neuroelectricity recording module with voltage resolution of 0.3 μV and 4-channel neurochemistry recording module with current resolution of 1 pA. The software had many basic features, including Spike separation and sort, chronoamperometry, cyclic voltammetry, etc. In particular, the software could observe and analyze the dual-mode neural signals synchronously. The performance of the system was demonstrated in the single mode detection experiments. In neuroeletrical experiments, 64-channel simulate neural signals were detected and the signal to noise ratio (S/N) of Spike recorded from cortex of Sprague-Dawley (SD) rat was 6. In the K₃[Fe(CN)₆] and ascorbic acid measurement experiments, the current response of K₃[Fe(CN)₆] in the range of 0.1-10 mmol/L was obtained by cyclic voltammetry, with a correlation coefficient of 0.9889, and the current response of ascorbic acid (concentration: 10-800 μmol/L) by chronoamperometry increased linearly with a correlation coefficient of 0.9841. Based on the rat model of global cerebral ischemia, a dual-mode detection experiment was carried out. In the experiment, the neuroelectrical and neurochemical signals were synchronously recorded in the SD rat primary visual cortex. According to the experimental results, we got the conclusion that the concentration of ascorbic acid negatively related to the Spike firing in the SD rat primary visual cortex.
- Dual-mode,
- Neurochemistry,
- Spike,
- Ascorbic acid,
- Microelectrode
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