Vomiting, a phenomenon also known as emesis, is controlled by an area located in the medulla oblongata, at the base of the brain, which is also known as the vomiting center. This region receives information that sometimes induces the body to carry out this action.
For example, it is possible to experience a sensation of nausea and even retching from certain data sent from the cerebral cortex, such as seeing a repulsive image about a traumatizing event, but also from the brain stem, which reports the movement and would be responsible for the dizziness in the means of transport. It also occurs with those coming from the vagus nerve, which sends information about the digestive system, so that we vomit if we ingest something supposedly toxic.
Anxiety can send negative signals to the vomiting center related to any of the aforementioned aspects. That is, sometimes the nerves cause us bad sensations of balance, digestive and, often, cognitive, related to the unpleasant thoughts that go through our head.
