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. 2016 Oct 31;16(11):1826. doi: 10.3390/s16111826

Figure 6.

Figure 6

(a,b) Testing of the impedance of flat Neurosky electrodes; (c) Flat silicone-based electrode; (d) The bent acicular silicone-based dry sensor; (e) The impedance of a normal acicular silicone-based dry sensor.