Nevasic is an audio program that is believed to work by emitting specific tones, frequencies, and pulses that disrupt normal auditory signals at the vestibular level, affecting balance receptors and creating an antiemetic reaction. Nevasic originally was developed as an audio tape and has been used for symptoms such as morning sickness and motion sickness. Nevasic audio was examined for its effects on chemotherapy-induced nausea and vomiting in patients with cancer.