PS101 Chapter Notes - Chapter 4: Visual Cortex, Phineas Gage, Auditory Cortex
Document Summary
Chapter 4: the brain the mind and self. Central nervous system: receives, processes, interprets and stores incoming sensory information. Sends out messages to muscles, glands, organs, etc. Peripheral nervous system: handles input and output from cns. All portions of the nervous system outside the brain and spinal cord. Spinal cord is a bridge between the brain and parts of the body below the neck. Contains two subdivisions (messages carried through sensory and motor nerves: somatic nervous system: nerves connected to sensory receptors and skeletal muscle, autonomic nervous system: regulates functioning of blood vessels, glands, internal organs. Sympathetic: engaged when something shocks or frightens you, fight or flight. Parasympathetic division: engage in calming you down (conserve) Approximately 100 billion neurons in the brain. Branch like fibres that receive information from other neurons and transmit towards cell body. Keeps neuron alive and plays key role in determining whether neurons will fire.
