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Vagus nerve stimulation is a technique for treating epilepsy through the use of electrical signals. It is also used to treat migraines, anxiety, and depression. Vagus nerve stimulation surgery is a procedure that involves implanting an electrode into the vagus nerve in the neck. The vagus nerve stimulator is a device that sends electrical signals to the vagus nerve in order to provide treatment for various conditions such as epilepsy and depression.

How Does Vagal Tone Impact Our Lives? 

The vagus nerve is the longest of the cranial nerves and extends from the brainstem to the abdomen. It is also called the “wandering nerve” because it has a wide range of functions. The vagus nerve is one of two major nerves that controls heart rate and blood pressure, as well as digestive tract peristalsis, sweating, and speech production.

Vagal tone refers to the level of activity in the vagus nerve. A high vagal tone means that your body is more likely to be relaxed or calm, and a low vagal tone means that your body is more likely to be stressed or anxious.

What Are The Benefits Of Vagus Nerve Stimulation Therapy?

Vagus nerve stimulation therapy is a technique that has been used for decades to help with treating epilepsy and other neurological disorders.

Since the vagus nerve does connect the brain and the heart, it plays an important role in regulating your autonomic system, which controls functions such as breathing, digestion, and heart rate. Stimulating the vagus nerve can help treat epilepsy by reducing the frequency of seizures. This treatment has also been shown to be effective in treating depression and anxiety.

There are many benefits of VNS therapy including: reducing or eliminating seizures, reducing or eliminating depression symptoms, longevity, and improving quality of life for those who suffer from epilepsy.

How Does Vagal Tone Change During Non-REM As Well as REM Phases of Sleep? 

In this section, we will discuss the vagal tone change during sleep and the dream state. There are three different types of vagal tone readings:

  • Basic vagal tone
  • Complete vagal tone

The basic vagal tone is a measure of how much the heart rate changes in response to a change in the respiratory rate. It is calculated by dividing the heart rate by the respiratory rate.

The complex vagal tone, on the other hand, is a measure of how much variation there is in heart rate over time. This type of measurement is more accurate than basic vagal tone as it takes into account both heart rates and breathing rates over time instead of just one at a time.

The brain produces lower amplitude and higher frequency EEG waves when it is in a state of deep sleep. This is because the neurons are producing less energy, and thus produce lower amplitude waves. 

Anti-Aging Effects of Vagus Nerve Stimulation

Vagus nerve stimulation is a procedure that is used to treat epilepsy and depression. It also has anti-aging effects because it can delay the onset of age-related diseases such as Alzheimer’s disease, Parkinson’s disease, and dementia.

The vagus nerve is a major nerve that runs from the brainstem down to the abdomen. It has been found that stimulating the vagus nerve can have significant anti-aging effects because it can delay the onset of age-related diseases such as Alzheimer’s disease, Parkinson’s disease, and dementia.


Bretherton B, Atkinson L, Murray A, Clancy J, Deuchars S, Deuchars J. Effects of transcutaneous vagus nerve stimulation in individuals aged 55 years or above: potential benefits of daily stimulation. Aging (Albany NY). 2019;11(14):4836-4857.


Cabiddu R, Cerutti S, Viardot G, Werner S, Bianchi AM. Modulation of the Sympatho-Vagal Balance during Sleep: Frequency Domain Study of Heart Rate Variability and Respiration. Front Physiol. 2012;3:45. Published 2012 Mar 9.


Dr. Naheed Ali MD, PhD

Dr. Ali is a freelance health and wellness writer. Visit him at



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