and pulses (mean discarded ICs = 6.2 ± 2.4). A topographic interpolation was then applied to reconstruct the previously discarded electrode channels. Because we focus on low frequency activities in this study, an additional low-pass filter of 20 Hz was applied. After pre-processing, ...
Using a low-cost dual operational amplifier, like the MCP602, we can design a very simple Sallen Key (second order) low-pass filter for the audio band, perfectly capable of driving a small headset or to feed a more powerful stereo amplifier (Figure 15.11). Sign in to download full-size...