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Fig. 2 | Molecular Brain

Fig. 2

From: A novel micro-ECoG recording method for recording multisensory neural activity from the parietal to temporal cortices in mice

Fig. 2

Bending stiffness of the sheet-shaped μECoG device. (a) Photographs of a μECoG sheet with different parylene thicknesses of 7, 13, 23 μm and an optical microscope image of a sheet with arranged neural electrodes (Ti/Au). While the 7 μm thick sheet strongly curls, the 23 μm thick sheet has high self-supporting characteristics. (b) Calculated bending stiffness of the device with and without the metal wiring layer as a function of the parylene thickness. (c) Frequency dependence of impedance of the representative neural electrode. The impedance at 1 kHz was approximately 0.5 MΩ. (d) The distribution of impedances of μECoG electrodes (52/64 channels). The remaining channels were removed due to high impedance (> 5 MΩ)

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