Multisensory stimulation device comprises a water mattress (2) bed (7), a cover (3) for the users head (4), equipped with an input/output audiovisual system and an input data keyboard, a computer application provided with a library of eligible emotional inducements, prepared for the selection of one of such inducements, consisting each emotional inducement of a group of resounding, chromatic and/or image outputs, sent out by the input/output audiovisual system placed in said cover (3). The computer application comprises the steps of select (110) the language of the application select (120) the functions from a group formed by: emotional inducements (121), mental trips (122), customized inducements (123) and download of new inducements (124) select (180) the kind of the voice of the interaction and the complements like, for example, a male or female voice, rolling of the sea, aroma or ionization and implement (190) the selected function.