Your cortex contains "only" 20 billion. The mean firing rate of neurons is estimated to be between 1 and 10 Hz. If you wanted to monitor 10% of the cortex you w

Your cortex contains "only" 20 billion. The mean firing rate of neurons is estimated to be between 1 and 10 Hz. If you wanted to monitor 10% of the cortex you would then need at to handle at most 20 giga events per second. Not so bad after all.