PSYC 101 Lecture Notes - Lecture 2: Frontal Lobe, Fluoxetine, Action Potential
Document Summary
From the body to the brain is known as afferent. From the brain to the body is known as efferent. Central (cns): controls all voluntary movements, thoughts, and registration of incoming information. Action potential (ion exchange sweeps along length of axon) Transmission: electrical impulse is converted into a chemical signal, electrical impulse is converted into a chemical signal, axon vesicle releases neurotransmitter into gap, dendrite receptor site detects neurotransmitter, reuptake: Reabsorption of neurotransmitter from synapse back into vesicles. Neurotransmitters carry information across the synaptic gap to the next neuron. Gaba: muscle actions, learning, memory, black widow venom ach levels, alzheimer"s disease: ach levels, refines precision by inhibiting firing, anxiety: gaba levels. Glutamate: excitatory, learning and memory, involved in many psychological disorders. Norepinephrine: stress and mania: norepinephrine levels, depression: norepinephrine levels, regulates sleep states in conjunction with ach. Dopamine: voluntary movement, reward anticipation, stimulant drugs: activate dopamine receptors, parkinson"s disease: dopamine levels, schizophrenia: dopamine levels.
