This special electrode is used with the AS-Super-4 stimulator from schwa-medico (or with some TENS from this same brand). It allows transcutaneous stimulation of the Vagus Nerve or Pneumogastric Nerve.
The Vagus Nerve or Perigastric Nerve, often referred to simply as Vagus is a nerve of the central cerebral system. It originates in the medulla oblongata, between the spine and the brain. It is the longest nerve of the parasympathetic nervous system. It is involved in regulating the activity of almost all internal organs. It is the second longest nerve in the body, after the spinal nerve.
The activity of the Vagus controls the heartbeat but also the production of proteins among other things.The Vagus has sensory and also motor activity of performance functions. It uses these to regulate the brain with regard to processes or activity of an organ that are not voluntary, in other words conscious. The word "Vagus" comes from Latin and means "wanderer". So this nerve in several parts of the head, ear, neck and upper body, focused on the activity of the cardiac and digestive systems.
It is the strongest nerve of the parasympathetic system of the neuro-vegetative nervous system and because of this it plays a crucial role in several vital processes. It is often presented as a recovery stem because of its ability to allow relaxation of the whole body. This also highlights its importance in many diseases or clinical pictures.
80% of nerve activity is used to transmit information from the body to the brain, while 20% of the activity is used to transfer information from the brain to the organs. This backflow of information can then influence the brain itself. The germs in the gut flora can be stimulated in turn through a chemical reaction in the Vagus.
The activity of the Vagus can be observed via what is known as HRV (Heart Rate Variability) or heart movement variability analysis. This is derived directly from the measurement of the electrical activity of the heart and shown by the ECG. The following sequence is observed when analysing the heart rateChange in heart rate spectrum during exercise (red) vs resting (blue)
Vagus activity is directly related to heart rate activity. When the heart
rate increases the Vagus activity reaches a higher frequency. Conversely, Vagus activity can reduce the heart rate and cause a drop in blood pressure.
The Vagus can be damaged due to diabetes, mercury, botox, alcohol, viral infections of the upper respiratory tract, or ear infections, inflammations, or stress or anxiety related disorders, but also poor physical posture. In turn, this damage can trigger symptoms as the body's ability to relax is reduced. The Vagus plays a crucial role in controlling the heart rate (HRV). The higher the width of the heart rate, the better the health of the patient is often considered to be. The HRV reflects the body's ability to adapt to different challenges: stress, activity and rest, and to adapt body functions to them. If the body can no longer adapt, it falls into a constant state of hypertension or hypotension. This is also observed in patients with high blood pressure. It is symptomatic that these patients are unable to reduce their blood pressure by HRV because of sympathetic nerve activity.
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