You're using it right now. Light from the computer screen is activating sensory cells on the retinas of your eyes and relaying the information to the visual cortex in the back of your brain, which processes the information and determines that the patterns on the screen are words written in American English describing the function of your nervous system. The brain is the only organ that can study itself.
Crash Course has a summary of the system's organization and nerve function.
You have two major divisions: Central Nervous System and Peripheral Nervous System. These have two types of nerves: Afferent and Efferent. Efferent are further divided into Somatic and Autonomic. One more time, Autonomic nerves are divided into Sympathetic and Parasympathetic. Yeah, it's a bit complicated.
90 percent of your brain does not just sit around doing nothing. You use your entire brain, just not all of it at the same time. If you did use 100 percent of your brain all at once, it would probably not give the ability to break the laws of physics, so don't plan on trying to copy Lucy.
Crash Course has a summary of the system's organization and nerve function.
You have two major divisions: Central Nervous System and Peripheral Nervous System. These have two types of nerves: Afferent and Efferent. Efferent are further divided into Somatic and Autonomic. One more time, Autonomic nerves are divided into Sympathetic and Parasympathetic. Yeah, it's a bit complicated.
90 percent of your brain does not just sit around doing nothing. You use your entire brain, just not all of it at the same time. If you did use 100 percent of your brain all at once, it would probably not give the ability to break the laws of physics, so don't plan on trying to copy Lucy.