PSYB30H3 Lecture Notes - Lecture 7: Electrodermal Activity, Heritability, Grey Matter
Document Summary
Brain structures areas of the brain; relative size of parts of brain to each other. Brain activity transmission of signals throughout the brain. Division of the nervous system central nervous system: brain, spinal cord. Peripheral nervous system: everything else, divided into: Somatic nervous system (sending and receiving signals from the body to the brain) Autonomic nervous system (without conscious thought; automatic) System of nerves that are called into play when you feel threatened (physical or psychological) Dampens non-essential functions anything that your body doesn t need to spend energy on at that time. Increases activity in area that will be needed if you will have to fight or flee. Example: heart rate increases (supplying muscles with more oxygen) Breathing becomes more rapid and deeper (to make sure the blood contains enough oxygen which can be provided to the muscles) Pupils dilate (enabling you take to take in more light; see better)
