PY - Psychology PY 100S Chapter Notes - Chapter 3: Motor Cortex, Cortisol, Frontal Lobe
14 Oct 2016
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Chapter 3: biology and behavior: define and describe the functions of the nervous system. Processing: you make sense of what is going on and can interpret the stimulation (via interneurons and other brain structures), you recognize a friend"s face, you notice the sound of your friend"s voice. Neural transmission: action potential: an electrochemical pulse that shoots down the axon. Three classes of neurotransmitters: small molecules, acetylcholine: first molecule to be identified as a neurotransmitter, movement, memory, heartbeat and digestion, norepinephrine: affects sleeping, wakefulness, learning, mood, and vigilance; implicated in depression, serotonin: converted from tryptophan. Affects aggression, mood, impulsivity; also plays a role in depression: dopamine: affects movement, reward/pleasure. Sends information from sensory organs to the central nervous system. Carries messages from the cns to muscles, glands, and vital organs. Somatic: sends signals from the senses to the cns, and sends signals from the cns to skeletal muscles.
