Neurostimulation – Relief for an Overloaded Nervous System
Modern life overwhelms us with constant stimuli and demands. School, work, and everyday responsibilities can quickly throw the nervous system off balance. The body remains in stress mode, often leading to exhaustion, restlessness, or difficulty concentrating. Neurostimulation helps with stress and sensory overload.
Audio-Visual Perception Stimulation (AVWF)
AVWF supports children, adolescents, and adults in improving concentration, learning capacity, motor skills, as well as mental and physical performance.
Using specially modulated music delivered through headphones, sound waves stimulate the middle-ear musculature and the nerve fibers connected to the autonomic nervous system. This helps the nervous system recalibrate and return to a state of balance.
Many patients notice positive changes after just a few sessions:
The sound-modulated music activates subconscious patterns, enhances the brain’s information-processing speed, and supports overall well-being—without the need for active training.

How does AVWF therapy work?
AVWF training is based on the targeted stimulation of the autonomic nervous system (ANS) – specifically the 10th cranial nerve, the vagus nerve. Through special, sound-modulated tones, gentle activation of this nerve is triggered via the muscles of the inner ear. Both ascending (afferent) and descending (efferent) nerve pathways are stimulated.
This rhythmic activation creates feedback loops within the autonomic nervous system – enhancing regulation, sensory processing, and the balance between tension and relaxation.
The body and brain re-learn when performance is needed and when recovery is appropriate.
The Effects:
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Improved concentration & perception
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Better information processing
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More successful learning behavior
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Stress reduction & relaxation
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Enhanced emotional stability
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More energy for school, work, daily life & sports


Measurable Effects on the Brain
Using functional magnetic resonance imaging (fMRI), it has been proven that sound-modulated music – as used in AVWF – triggers specific neural responses in the brain.A study from Salzburg showed significant changes in three key brain areas among participants:
Auditory Cortex:
Significantly increased activity when listening to sound-modulated music – the brain responds more intensely to acoustic stimuli.
Thalamus:
Increased activation was also observed in the thalamus, the central relay station for sensory impressions – particularly in areas related to auditory processing.
Motor and Premotor Cortex:
Reduced activity was measured here, indicating a calming and relaxing effect.
These results suggest that sound-modulated music not only enhances perception but also contributes to motor relaxation.This approach could be particularly supportive in parenting and therapy for restless or hyperactive children – and may even help reduce the need for medication.

Course of Therapy
For a period of 2x five-day sessions, one hour per day is spent listening to sound-modulated tones through headphones. During this time, patients can read, draw, play games, or even simply sleep. The effect is definitely present. Even after the 10-day program has ended, the performance of the stimulated brain continues to improve over the course of weeks and months.
In addition, I support the autonomic nervous system with appropriate neurological stimulation using scientific visual training and color light therapy, at the right time and in the right place.
The therapy aims to achieve a noticeable improvement in the perception of visual and auditory information through the combination of all stimuli. Many clients report positive changes in their ability to perceive.

Neuro-Sensory Therapist
For over 20 years, I have combined my expertise in visual therapy with auditory stimulation. Since then, more than 5,000 children and adults have benefited from this unique combination — achieving remarkable success in school, work, leisure, and sports.
As an experienced functional optometrist and pioneer of the AVWF® method in Switzerland, I have guided people of all ages on their journey toward improved perception and quality of life.
If you're interested, please email me for an initial consultation. Sometimes I can tell you during our phone call whether therapy would be suitable for your son or daughter. Sometimes I need to perform a preliminary examination to determine the correct diagnosis.
Contact me via Email or phone +41 43 322 22 00 and schedule a personal phone consultation. I look forward to hearing from you!
Science & Media
The Development of AVWF – Well-Founded, Tested, and Scientifically Supported
Ulrich Conrady has developed Audiovisual Perception Training (AVWF) over many years, based on scientific findings and practical experience. From the very beginning, the method has been accompanied by biologists, neuroscientists, and psychologists — through studies, tests, and continuous refinement.
The articles are available in German only.











