PSYCH101 Lecture Notes - Lecture 2: Peripheral Nervous System, Myelin, Spinal Cord

• School: University of Waterloo
• Department: Psychology
• Course: PSYCH101
• Professor: Steve Spencer

Document Summary

Basic principle: there is a lot of specificity, but there is also a lot of redundancy and adaptability nothing is just one structure (everything works together) Neuron: same for everything in the nervous system, it operates through electrical impulses throughout the body. How do they work in the neuron: axon should be long to be in the nervous system, myelin sheath speeds the neural impulses. Multiple sclerosis myelin sheath is breaking down (can"t control motor responses: the ions create the electrical flow (positive flow in that change the charge) The flowing in and out of ions of the outside and inside of the body is the charge: the electrical charge moves from neuron to neuron by: Axon terminal almost touches the cell body of the next neuron. There is a small gap called the synapse. To get over this gap, you need a neural transmitter (electrical charge releases a chemical) Dopamine involved in movement, attention, and emotion.