Vito Brain Each one of your senses is an input to your brain. Your brain receives signals from your senses and responds based on the information it receives. Without input there will be no output. Without stimulation the brain loses its ability to control very important functions and it is these malfunctions that produce many of the symptoms in chronic illnesses, such as fibromyalgia, chronic pain, anxiety and ADD. The brain depends upon crucial inputs to maintain healthy functioning and that is why Brain-Based Therapy is so important and effective.