A device for delivering caloric vestibular stimulation to an individual, includes: (a) an earpiece configured to be at least partially insertable into the ear canal of the individual for delivering a first thermal stimulus; (b) an input unit for receiving a user input indicating efficacy of said first thermal stimulus, and (c) a controller operatively associated with said earpiece and said input unit for: (i) controlling said earpiece to provide said first thermal stimulus, and (ii) receiving a signal corresponding to the user input and generating a control signal to control the earpiece and delivering a subsequent thermal stimulus different from said first thermal stimulus. In some embodiments, each thermal stimulus is an actively controlled time varying waveform stimulus.