PSYC 100 Lecture Notes - Lecture 8: Peripheral Nervous System, Motor Neuron, Short-Term Memory

• School: University of Illinois
• Department: Psychology
• Course: PSYC 100
• Professor: M O' Brien

Document Summary

Work from biological perspective to link biology to behavior. Speedy, electrochemical communication network consisting of nerve cells. Brain and spinal cord that makes decisions for body. Sensory and motor neurons connecting to cns to gather information. Helps prepare for sudden and dangerous encounters. Helps body relax and return to normal state. Carry messages from body"s tissues and sensory receptors inward to spinal cord and brain for processing. Instructions from central nervous system to body"s muscles. Example of network of neurons at work. Sensory neuron sends info to spinal cord. Spinal cord activates motor neuron engages muscles to keep finger away from danger source. Neural impulse that travels down an axon like a wave. Neuron stimulation causes brief change in electrical charge, creates depolarization. Depolarization produces another action potential down the line. Goes down the line until hits receptors. Undersupply linked to tremors, loss of motor control. Undersupply linked to seizures, tremors, and insomnia.