PSYB30H3 Chapter Notes - Chapter 7: Functional Magnetic Resonance Imaging, Transcranial Magnetic Stimulation, Reticular Formation
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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 (cid:894)(cid:396)eple(cid:374)ishes (cid:271)ody(cid:859)s(cid:859) e(cid:374)e(cid:396)gy sto(cid:396)es(cid:895) 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. (cid:373)ag(cid:374)eti(cid:272) fields (cid:396)eso(cid:374)ate ato(cid:373)s(cid:859) (cid:374)u(cid:272)lei, (cid:396)adio f(cid:396)e(cid:395)ue(cid:374)(cid:272)ies dete(cid:272)t these ato(cid:373)s, a(cid:374)d the pattern of the hyd(cid:396)oge(cid:374)s(cid:859) (cid:396)eso(cid:374)a(cid:374)(cid:272)e a(cid:396)e dete(cid:272)ted. Measures of activity to detect differences in the brain-> often when working with a mental task.
