stimulation of the medial frontal cortex gives one the feeling of the urge to move - Michael S. Gazzaniga

I am not suggesting that single cells are conscious. I am suggesting that they may have some type of processing that is necessary or similar to the processing that results in conscious experience.

Multi-modular brains have at their beck and call a tremendous number of paths to conscious experience. If one route gets destroyed, another may provide an alternate course. To stamp out consciousness, all modules leading to a conscious state must be shut down. Until this happens, intact modules will continue to pass information from one layer to another and induce a subjective feeling of experience. The contents of that conscious experience may be very different from normal, but consciousness remains. Visiting the neuropsychology clinic, we will see how various assaults on our brain affect consciousness and provide insights into how our brains are organized. It turns out that the endless fluctuations of our cognitive life, which are managed by our cortex, ride on a sea of emotional states, which are constantly being adjusted by our subcortical brain.

some types of neurons may be found only in specific species.