https://conservancy.umn.edu/server/api/core/bitstreams/10094c7f-aeff-4b74-928d-9c4cd0267346/content
https://link.springer.com/article/10.1007/bf02442528
a deep breath may double skin conductance in seconds.
https://psycnet.apa.org/record/1933-04449-001
Cats were used whose inferior cervical ganglion had been removed on one side only. No sympathetic fibers whatever remained connected with one of the front paws, while the fibers to the other front paw were not disturbed....The resistance was found to fluctuate considerably on the sound side, particularly when the animal was emotionally disturbed, but the operated paw showed no change in resistance.
The inferior cervical ganglion is the lowest part of the sympathetic trunk in the neck, often merging with the first thoracic ganglion to form the stellate ganglion (cervicothoracic ganglion), located near the C7 vertebra and first rib, providing sympathetic nerve fibers for the head, neck, arms, and heart via nerve plexuses and connections to spinal nerves
https://pmc.ncbi.nlm.nih.gov/articles/PMC7410715/
The inferior ganglion of the vagus nerve (IGVN) is also along the internal carotid artery at approximately the same region,
https://jamanetwork.com/journals/jama/article-abstract/329464
attached to asymmetric parts of the body....
The electrodes were applied at different times to asymmetrical parts of the body such as the hands and fingers, feet and toes, face and back, whilst the subject was kept at complete rest.
wow....
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