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The autonomic nervous system regulates such important functions as blood pressure (BP), heart rate, thermoregulation, respiration, gastrointestinal, bladder, and sexual function.
An electroencephalogram (EEG) is a test that detects electrical activity in your brain using small, metal discs (electrodes) attached to your scalp.
Spirometry (spy-ROM-uh-tree) is a common test used to assess how well your lungs work by measuring how much air you inhale, how much you exhale and how quickly you exhale.
A nerve conduction study (NCS), uses electrode stickers applied to the skin (surface electrodes) to measure the speed and strength of signals traveling between two or more points.