So many challenges. One is that we can only receive information from certain parts of the brain—those where the neurons are perpendicular to the scalp. As you k

So many challenges. One is that we can only receive information from certain parts of the brain—those where the neurons are perpendicular to the scalp. As you know, the brain is really convoluted, so this makes for a very messy signal. Another issue is that the raw noise makes it extremely difficult to detect faint signals. An approach for this is training models that have expectations based on the stimuli themselves; e.g., to find neural resonance with different frequencies in the stimulus.