The body has 12 cranial nerves. They come in pairs and help connect the brain to other parts of the body, such as the head, neck, and torso.
Some send sensory information to the brain, including details about smells, what is seen, tastes, and sounds. These nerves have sensory functions. Other cranial nerves control the movement of various muscles and the function of some glands. These are known as motor functions.
While some cranial nerves have sensory or motor functions, others have both. The vagus nerve is such a nerve. Cranial or brain nerves are denoted by Roman numerals and are ordered according to their location. The vagus nerve is also called cranial nerve X.
What does the vagus nerve affect?
The vagus nerve, also known as the pneumogastric nerve, is responsible for various functions of internal organs, which include:
- digestion
- heart rate
- breathing
- cardiovascular activity
- reflex actions, such as coughing, sneezing, swallowing, and vomiting
It plays a role in the autonomic nervous system, which controls actions that people perform unconsciously, such as breathing and digestion.
It also forms a connection between the gut and the brain, which plays a role in what scientists call the gut-brain axis. In recent years, experts have studied the gut-brain axis to search for links between conditions such as obesity and depression.
Anatomy and function of the vagus nerve
The word "vagus" in Latin means wandering. This is a very appropriate name, as the vagus nerve is the longest cranial nerve. It runs from the brainstem to part of the large intestine.
The sensory functions of the vagus nerve are divided into two components:
- Somatic components. These are sensations on the skin or in the muscles.
- Visceral components. These are sensations that are felt in the body's organs.
Sensory functions of the vagus nerve include:
- providing information about somatic sensations for the skin behind the ear, the external part of the ear canal, and certain parts of the throat
- providing information about visceral sensations from the throat, esophagus, lungs, trachea, heart and most of the digestive tract
- plays a minor role in the sense of taste near the base of the tongue
Motor functions of the vagus nerve include:
- stimulation of muscles in the throat, larynx, and soft palate near the back of the oral cavity
- stimulation of muscles in the heart, where it helps lower the resting heart rate
- encouraging involuntary contractions in the digestive tract, including the pharynx, stomach, and most of the intestine, which allow food to move through the digestive tract
Testing of the vagus nerve
To test the vagus nerve, a doctor can check what is known as the gag reflex (the vomiting reflex). The doctor uses a soft cotton swab to stimulate the back of the throat on both sides, which causes the gag reflex in the person.
If the person does not experience the vomiting reflex or gag reflex, this may be due to issues with the vagus nerve, which may indicate a problem with the brainstem's function.
Doctors can assess the function of the vagus nerve based on the examination of cardiovascular diseases. They also measure heart rate, blood pressure, and cardiovascular response to exercise. Damage to the vagus nerve can indeed cause problems with the cardiovascular system.
Vagus nerve issues
Nerve damage
Due to the extraordinary length of the vagus nerve, its damage affects numerous areas and can cause a variety of symptoms.
Potential symptoms of vagus nerve damage include:
- speech difficulties
- loss or change in voice
- difficulty swallowing
- loss of gag reflex
- low blood pressure
- slow heart rate
- changes in the digestive process
- nausea or vomiting
- bloating or abdominal pain
- depression and anxiety in people with breathing difficulties or heart diseases
Symptoms depend on which part of the nerve is damaged.
Gastroparesis
Experts say that damage to the vagus nerve can also cause a condition called gastroparesis. This condition affects involuntary contractions of the digestive system, preventing the stomach from emptying properly.
Symptoms of gastroparesis include:
- nausea or vomiting, especially vomiting undigested food several hours after eating
- loss of appetite or feeling full soon after the start of a meal
- burning chest pain
- abdominal pain or bloating
- unexplained weight loss
- blood sugar fluctuations
In some people, gastroparesis develops after a vagotomy. A vagotomy is a surgical cutting of branches of the vagus nerve that supply secretory cells of the stomach or duodenum and were mostly performed in the past on patients with stomach or duodenum ulcers.
It is known that studies have examined the effect of vagus nerve stimulation in people with mild to moderate gastroparesis without a known underlying cause. After 4 weeks, symptoms usually improve, including the ability to empty the bowel.
With Zappers that have the option of selecting or programming frequencies from 1 Hz to 1 MHz, you can use the following program:
Gastroparesis :
120 Hz, 200 Hz, 900 Hz, 47,500 Hz, 15,670 Hz, 115,900 Hz, 434,500 Hz, 540,000 Hz, 670,000 Hz, 790,000 Hz
The frequency source is etdfl.com, frequencies are converted from kHz to Hz.
Vasovagal syncope
Syncope or fainting is a sudden, short-term loss of consciousness due to cerebral ischemia. The cause can be low blood pressure, lack of oxygen, neurological or psychogenic disturbance, in all cases there is insufficient oxygen supply to the brain. Vasovagal syncope occurs especially in situations such as sudden severe pain, long periods of standing, crowds, heat and similar. The vagus nerve stimulates certain muscles in the heart that help slow the heart rate. When there is an excessive reaction, this can cause a sudden drop in heart rate and blood pressure, which causes a faint or vasovagal syncope.
The factors that trigger vasovagal syncope are not always clear, but may include pregnancy, emotional stress and pain.
In addition to this type of fainting, you may experience:
- heat
- weakness
- tunnel vision
- ringing in the ears
- excessive sweating
- low blood pressure
- slow or irregular heartbeat
In the event that you experience fainting, we recommend visiting a doctor to rule out any potential serious causes. To prevent fainting, your doctor will likely recommend drinking plenty of fluids or avoiding sudden standing, and possibly other measures.
Vagus nerve stimulation
Vagus nerve stimulation involves the use of devices such as Zappers, which use electrical impulses to stimulate the nerve and can be set to desired target-specific frequencies. Frequency therapy may also help in some cases of epilepsy and depression that do not respond to other forms of assistance. Especially in the latter conditions, we recommend consulting your doctor.
Experts say that the vagus nerve may form a connection between depression, metabolic disease, and heart diseases. This means that vagus nerve stimulation may help with various health issues.
Neurologists also use a device that is usually implanted under the skin of the chest and connected by a wire to the left vagus nerve. When activated, the device sends signals through the vagus nerve to the brainstem and relays information to the brain.
Vagus nerve stimulation can also help with many other conditions, including multiple sclerosis, posterior autoimmune uveitis, Alzheimer's disease, and cluster headaches or headaches in episodes.
We recommend using zappers that have the ability to set the mentioned frequencies, namely from 1 Hz to 1 MHz (Spooky2, Zapper-Pro, Resonant Light):
In the case of X. cranial nerve disorders, we can use the following programs:
40 Hz, 320 Hz, 700 Hz, 880 Hz, 5,780 Hz, 32,500 Hz, 181,930 Hz, 621,690 Hz, 705,530 Hz, 815,700 Hz
Gastroparesis (paralysis of the muscle in the stomach wall due to damage to the stomach innervation):
120 Hz, 200 Hz, 900 Hz, 47,500 Hz, 15,670 Hz, 115,900 Hz, 434,500 Hz, 540,000 Hz, 670,000 Hz, 790,000 Hz
The frequency source is etdfl.com, frequencies are converted from kHz to Hz.
Research and other considerations
Experts say that the vagus nerve may contain clues about various health issues.
Mental health and well-being
Given that vagus nerve stimulation can help in managing depression, people are seeking various ways to stimulate the vagus nerve to improve mental well-being.
These methods include:
- diaphragmatic breathing techniques (optimal breathing)
- use of cold water
- use of frequencies for stimulation (electrotherapy with programmable zappers)
- biofeedback
- yoga
According to research, vagal response decreases with age. People with strong vagal tone can relax more easily after a stressful event, their body better manages inflammation and digestive issues, and more easily regulates blood sugar.
Always consult with your doctor before trying new treatment strategies, as they may not all be suitable for you.
Rheumatoid arthritis
Vagus nerve stimulation may help reduce the severity of rheumatoid arthritis, an inflammatory condition that causes joint pain and swelling as well as other body symptoms. According to research, body inflammation markers significantly decrease after approximately 12 weeks.
Conclusion
The vagus nerve plays a role in many bodily functions and can form a connection between areas such as the brain and the gut. Stimulation focused on the vagus nerve has been shown to help people with epilepsy and depression, and also shows promise for rheumatoid arthritis.
Experts say that further research into the vagus nerve may also help in managing diabetes, obesity, heart disease and other conditions involving inflammatory processes.
You can read more about all 12 pairs of cranial nerves and their associated frequencies in the related article.