A neural physiological method and apparatus for keeping the brain in wakefulness, in which the trigeminal nerves on the forehead are stimulated with a mild electrical current neuronal modulating signal of a range of frequencies and amplitudes in combination transmitted to the brain functional site locus coeruleus, resulting in inhabitation of the brain functional site thalamic reticular nucleus such that the thalamic reticular nucleus does not release inhibitory neurotransmitters for blocking the communication pathways between the thalamus and the cortical regions in the brain, keeping the brain in wakefulness.
