Fig. 8: Monitoring of the electrical activity of neurons. | Light: Science & Applications

Fig. 8: Monitoring of the electrical activity of neurons.

From: Microscale insight into the proton concentration during electrolytic reaction via an optical microfiber: potential for microcurrent monitoring by a dielectric probe

Fig. 8

a Schematic diagram of monitoring of the cell electrification process via the fiber-optic sensor with the GO-MoS2-Au interface. The microfiber was positioned at a distance of 204 μm from the counter electrode. (BBS broadband source, OSA optical spectrum analyzer, EW electrochemical workstation, CE counter electrode, RE reference electrode, WE working electrode). b Photograph of the placement of the sensor in the cell cluster. c, d, e Electricity generation signal recorded by the electrochemical workstation. f, g, h Changes in the pH during electrical stimulation. i, j, k Wavelength shifts and derivative of the wavelength shift with respect to time d(nm)/dt during electrical stimulation. l, m, n Average wavelength shifts obtained from three measurements. (c, f, i, l: current was 0.2 mA; d, g, j, m: current was 0.25 mA; e, h, k, n: current was 0.3 mA)

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