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The skull works as a Faraday cage in such situations?
by rkachowski 6y ago
The skull works as a Faraday cage in such situations?
- anonytrary 6y agoNowhere near a perfect conductor. It, and the muscles around it, create noise and weaken the internal signal measured externally, acting as an effective cage. Measuring the signal from outside the skull is a bad idea. From inside (e.g. hippocampus), the electrodes are so much closer to the neurons, that the majority of the measured signal is not due to cranial noise.