PSYB30H3 Lecture Notes - Magnetic Resonance Imaging, Central Nervous System, Sympathetic Nervous System
Document Summary
7 - neuroscience and personality [other biological theories] Central nervous system (cns: brain, spinal cord. Peripheral nervous system (pns: somatic nervous system. Skin conductance (gsr galvanic skin response) Electromyography (emg) measure non-visible muscle movement. Static differences in relative size and weight and cell numbers of brain parts. Eeg electric activity at different parts of the bran. Pet low radioactive glucose solution then scan to see which areas use glucose most fmri measures oxygen"s magnetic properties to see which areas are active. Tms electrode stimulated a selected area of the brain and disturbs that area. Neurotransmitters: chemicals released by neurons to excite next neuron into action, or inhibit it: dopamine: pleasure, movement, learning, rewards, serotonin: mood regulation and arousal, control of sleeping and eating. Low = linked to depression: norepinephrine and epinephrine are also considered stress hormones increase blood flow to muscles by increasing heart rate and blood pressure.
