The present invention relates to a bed to adjust a slope of the bed according to brain waves and a method thereby, to adjust the slope to generate the maximum alpha waves of brain waves which are generated by the change of the blood amount to be provided in a bed user's brain. For this, there is provided...http://www.google.fr/patents/US7181793?utm_source=gb-gplus-shareBrevet US7181793 - Bed to adjust the slope of the bed according to brain waves and a method thereby
Bed to adjust the slope of the bed according to brain waves and a method thereby
