Abstract
According to clinical experiences with the PA (Physioacoustic) Method and research about vibroacoustic therapy, it is considered that PA-stimulation is transmitted through sensory nerves to the brain and the stimulation acts on the central nervous system, motor nerves, autonomous nerves and endocrine system to calm down the mind/body. On the psychological side, PA-stimulation is clearly effective towards anxiety, depression, and insomnia and it sometimes mitigates epileptic symptoms. In an EEG study on PA-stimulation done by the psychologist Petri Lehikoinen, the experimental subject was in a deep relaxed state and the amplitudes of the brain waves were decreased in all ranges. These phenomena suggest the possibility that PA-stimulation has an effect on the action of GABA, an inhibition neurotransmitter.
