Based on Dr Castillo Morales’ palatal plate concept, Dr Klaus Berndsen and Sabine Berndsen have been researching and developing OSP therapy at the ISST since 1989. To this end, more than 3000 OSPs with different stimuli and materials were produced for patients and the stimulus-reaction influences were measured. Ultimately, OSPs with 16 distinctive individual stimulus bodies were created, which are integrated into a soft plate system (tongue boxes). They cause intraoral stimulation, such as activation of the tongue, lips and velum, and influence complex functional processes: swallowing, breathing, chewing, neurological pattern formation, ventilation of the middle ear, optimisation of proprioceptive performance, etc. OSPs support the initiation, correction and automatisation of basic tensions, basic postures and functional patterns.