A device and method is provided for treating a person by providing controlled stimulation of a branch of the trigeminal nerve of the person to induce a dive reflex response in the person. A device for providing this treatment includes a stimulus component controllably operable to stimulate a branch of the trigeminal nerve of a person. The stimulus component can be a Peltier device configured to reduce the temperature of the person's face in proximity to a branch of the trigeminal nerve to induce the dive reflex. A controller controls activation of the stimulus component when it is desirable to induce the dive reflex response in the person. The controller can sense physiological and ambient conditions and can activate and deactivate the stimulus component in response to a condition falling within or outside a threshold value.