Multiple areas of the cerebral cortex influence the stomach | PNAS. Sympathetic, parasympathetic. Stress, ulcers.
Excerpt:
Output neurons in the rostral insula are the major cortical source of influence over parasympathetic control of the stomach, whereas output neurons in sensorimotor areas of the cortex are the major source of influence over sympathetic control.
Thus, cortical areas involved in action, interoception, and emotion differentially influence stomach function.
Ulcers? Ulcers are caused by bacterial infection in the stomach wall. Acid production is normal...per unit, stomach acid for digestion is stronger than battery acid. Your stomach handles it just fine. All you have to do to produce stomach acid is smell food or even imagine smelling food, and then your stomach doesn't care if it gets actually fed something or not. And that is 75 year old research.
Also:
Stress ulceration: prevalence, pathology and association with adverse outcomes.
Introduction:
So-called 'stress-related mucosal damage' (SRMD) is the broad term used to describe the spectrum of pathology attributed to the acute, erosive, inflammatory insult to the upper gastrointestinal tract associated with critical illness [1].
ncbi.nlm.nih.gov/pmc/articl...
What a bunch of weak-ass studies.
