PSY100H1 Lecture Notes - Autonomic Nervous System, Heritability, Generalized Anxiety Disorder

• School: UTSG
• Department: Psychology
• Course: PSY100H1
• Professor: Elizabeth Page- Gould

Document Summary

Meditation makes people less anxious, negative, and healthier. Peripheral nervous system= somatic nervous system (muscles) + autonomic nervous system (smooth muscles, cardiac + glands) Autonomic=sympathetic (fight or flight) + parasympathetic (replenishes body"s" energy stores) Brain protected by cerebrospinal fluid (csf)-> flows through ventricles. Galvanic skin response (gsr): measures sweat; measure of skin conductance- the faster the current, the more moisture present from greater arousal. Electromyography (emg): measures muscle activity; measures myoelectric activity, estimates the electrical impulses of the muscles during contraction + relaxation. Some scientists looks for weight difference/cell # differences b/w different parts of the brain. Computerized tomography (ct): takes high resolution x-ray to detect abnormalities; Magnetic resonance imaging (mri): radio frequencies are used instead of x-rays to take pictures. Magnetic fields resonate atoms" nuclei, radio frequencies detect these atoms, and the pattern of the hydrogens" resonance are detected. Measures of activity to detect differences in the brain-> often when working with a mental task.