PS101 Lecture Notes - Lecture 3: Phineas Gage, Peripheral Nervous System, Central Nervous System
Document Summary
Overview: phineas gage, brain facts, organization of the nervous system, the endocrine system, techniques to study the brain, communication in the nervous system. Cerebral cortex: primary motor cortex: controls movement. (two halves left and right, if you move your right hand, that uses your left brain) also contains the: motor homunculus: focuses on what functions needs more brain space hands, mouth (making finer movements, somatosensory cortex: in parietal lobe, has a cross over effect (anything on your left side, goes to your right brain) and has the sensory homunculus: which focuses on what functions of each sensory input, gets a certain amount of space. Brain structure: learned from deceased humans and animals, two hemispheres, or halves, that each control the opposite side of the body, visual information is processed from the back of the brain, brain sits on top of the spinal cord, ct scan (computerized tomography scan): involves taking multiple x rays of the brain from different angles.
