it unofficially labeled, is an extra-sensory perception which alerts an immortal when another of his or her kind is approaching. The range and intensity of the Buzz is varied, depending upon the age and power of the Immortals involved.
The physical effects of the Buzz are constant: the Immortal (usually) feels a prickling at the base of his or her neck, followed by what appears to be a surge of adrenaline. Physical senses appear to be enhanced, to the point where one Immortal can turn and zero in on the other without even looking. For a newly-created Immortal, the experience can be unsettling, even traumatic. The effects of the Buzz may vary between immortals but are usually focused on the cranium and usually unpleasant enough to be immediately noticeable. There seems to be a different effect when an Immortal meets a latent Immortal (Immortals before their first death) that makes them recognizable. Latent Immortals don't feel the Buzz.
Added by Bad Asch
