PSYC 1010 Chapter Notes - Chapter 5: Resting Potential, Semipermeable Membrane, Multiple Sclerosis

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Heather Jenkin

Document Summary

Thought the mind was in the heart. Studying bumps on a skull could reveal mental abilities and traits. Helped focus on the localization of function: parts of the brain have different roles. Basic building block of the nervous system. Each has a cell body and fibres: dendrites, speakers: receive info and conduct it throughout the cell body short, axon, listeners: pass message from dendrites to other neurons or muscles or glands. If it degenerates: multiple sclerosis happens (muscles slows, eventual loss of muscle control) Support nerve cells: provide nutrients insulate myelin, guide neural connections, mop up ions and neurotransmitters. Also communicate with neurons, part of the information transmission. Action potential: neurons transmit messages when stimulated by signals from our senses or when triggered by neighbouring neurons, response: action potential an impulse, a brief electrical charge that travels down axon. Neural impulse times range from 2 miles/per hour to 200 miles/per hour.