PS101 Chapter Notes - Chapter 3: Hindbrain, Acetylcholine, Neurogenesis
Document Summary
1: neurotransmitter: chemical messages, imbalances = disorders, acetylcholine (ach): activates motor neurons controlling skeletal (voluntary) muscles. Chapter 3: contributes to regulation of attention, arousal, and memory, some ach receptors stimulated by nicotine. Dopamine (da): control of voluntary movement, pleasurable emotions. Decreased levels of dopamine is directly proportional to parkinson"s. Over activity at da synapses is directly proportional to schizophrenia. Cocaine & amphetamines increase/elevate activity at da synapses. Norepinephrine (ne): contributes to modulation of mood & arousal. Cocaine and amphetamines increases activity at ne synapses. Serotonin: regulation of sleep & wakefulness, eating, aggression. Abnormal levels are related to depression & ocd. Gaba (glutamate): serves as widely distributed inhibitory transmitter. Valium & similar antianxiety drugs work as gaba synapses. Endorphins: resemble opiate drugs in structure and effects. Contribute to pain relief & perhaps to some pleasurable emotions (euphoria: neuron: receive, integrate, and transmit information, neurocommunication. Chapter 3: message enters through dendrites (receives info, neuron 1 neuron 2.
