The cerebellum takes up only a small corner of the skull yet holds more than half of all the neurons in the brain. Seven cortical regions fire at rhythms of their own, and the EEG spectrum runs from delta at 0.5–4 Hz in deep sleep up to gamma at 30–80 Hz under concentration. A visual signal travels to the occipital lobe, a sound to the temporal lobe, each route waking its own territory. In a seizure, inhibition drops to a quarter and the whole cortex ignites at once.
The cerebellum takes up only a small corner of the skull yet holds more than half of all the neurons in the brain. Seven cortical regions fire at rhythms of their own, and the EEG spectrum runs from delta at 0.5–4 Hz in deep sleep up to gamma at 30–80 Hz under concentration. A visual signal travels to the occipital lobe, a sound to the temporal lobe, each route waking its own territory. In a seizure, inhibition drops to a quarter and the whole cortex ignites at once.
Related topics in Human Body