The Whisperer

None. This is an auditory phenomenon and reports rarely include any visual component.

Where a figure is present as well, the report belongs closer to the sleep-paralysis entries.

Speaks once. Usually the sleeper's name; sometimes a short phrase, a called-out word, or an indistinct murmur. Does not respond, does not repeat, does not continue. The sleeper typically wakes fully and finds the room empty.

The bedroom, at sleep onset or on waking. The voice is characteristically described as in the room rather than in the head, which is what makes it convincing.

1. Drifting off, or surfacing.
2. A voice, clear and close.
3. Full waking, usually with a start.
4. Nothing there.

Startle, then unease, but far less fear than the visual sleep-boundary experiences. Many reporters describe it as more puzzling than frightening. Some, particularly the bereaved, describe recognising the voice.

Voices at the threshold of sleep are documented across a great deal of historical and religious literature, and a number of traditions treat them as significant. Distinguishing those accounts from ordinary hypnagogia is not straightforward and this entry does not overclaim.

Very widely reported. Hypnagogic hallucinations of all kinds are common in the general population, with auditory forms among the most frequent.

Hearing a deceased person's voice is a distinct and much-reported variant, particularly during bereavement, and it belongs equally with the grief material.

Exploding head syndrome (a loud bang, crash or noise at sleep onset) is a related and separately named phenomenon. It is alarming, harmless, and worth knowing the name of.

Whole sentences are reported less often and are more likely where the sleeper is very sleep-deprived.

• Hypnagogic and hypnopompic hallucination, the mechanism.
• Name-calling, the unexplained consistency.
• Bereavement, in the recognised-voice variant.
• Sleep deprivation, which increases frequency.

Knowing it is common and benign is genuinely reassuring, and a number of people carry unnecessary worry about it for years.

Bereaved people who hear a familiar voice frequently describe it as comforting rather than frightening, and that experience deserves to be met with respect rather than correction.

Startle, and disrupted sleep onset where it recurs. Frequent episodes usually track sleep deprivation.

Worth noting plainly: hearing voices only at the edge of sleep is a different thing from hearing them while fully awake. If voices occur during full wakefulness, that is worth discussing with a doctor, not because it is necessarily serious, but because it is a different phenomenon from this one.

Hypnagogic hallucinations occur as the brain transitions between wake and sleep, when sensory processing and reality-monitoring are both in flux. Auditory forms are among the most common.

Traditions of being called by name in sleep (by the dead, by spirits, by a deity) are widespread. Recorded as belief, and noted as a plausible cultural response to a physiological experience.

Hypnagogic and hypnopompic hallucinations are common in the general population and are not indicative of psychiatric illness. Auditory forms, including name-calling, are frequently reported. Frequency increases with sleep deprivation and irregular schedules.

• What exactly did you hear? Name, phrase, or sound.
• Was it a voice you recognised?
• Falling asleep or waking?
• Does it only ever happen at the edge of sleep?

Common and benign. Track against sleep debt in the sleep log.