Acupuncture at the Neiguan point may alter the structure and function of the brain
Neiguan point stimulation (whether via needle, pressure, or electric shock) has been proven to change the protein composition on the surface (outer membrane) of brain cells (neurons), especially in the hippocampus (part of the brain responsible for learning and memory).
Researchers have demonstrated that acupuncture at the Neiguan point has widespread brain wave effects. Brain waves (electroencephalogram (EEG)) increase in amplitude and EEG becomes synchronized during acupuncture at the Neiguan point. The brain wave changes persist long after the acupuncture needle was removed.
Acupuncture increases activity in the faraway vagus nerve. The vagus is an extremely long nerve that wanders from the brainstem (the part of the brain responsible for basic life functions such as heartbeat and breathing) throughout many major organs of the body (such as the heart, kidney and bowels).
Acupuncture at the Neiguan point alters the signals emanating from the cerebellum. The cerebellum resides at the back and bottom of our heads. It is the main balance and coordination center of the brain. It is vital in the performance of tasks such as walking, writing, grooming and feeding oneself. Without its proper function we could not fine tune any of our motions or even sit upright.
For more info, check out https://brain2mind.substack.com/p/science-behind-acupuncture-neiguan