Unbranded headphones and a thin sensor cable beside a closed notebook on a wooden desk.

DREAM RESEARCH & COMMUNICATION

A question during sleep,and a signal in reply.

A laboratory exchange can be brief, pre-arranged and difficult to obtain. It is not a continuous conversation inside a dream.

Verified signalBrief exchange

Dialogue has several separate parts

A question presented during sleep, an intentional response signal and a waking memory can relate to the same session without being the same kind of evidence.

Question

What was presented, and by which agreed method?

Response

What signal was scored as an answer?

The phrase ‘talking to dreamers’ is vivid, but it can suggest a flowing conversation that the research did not test. A more exact picture is a short exchange across sleep: a question is delivered, a sleeper may make an agreed signal, and the session is evaluated alongside sleep recordings and later reports.

This distinction protects both the result and the mystery of a dream. A verified response can be striking without supplying a transcript of a dream scene, a direct line between two dreamers or a message service available outside the study.

What the real-time dialogue study reported

Konkoly and colleagues (2021) worked with 36 people across four laboratories. During 158 attempts in signal-verified REM sleep, six people gave 29 correct responses; most attempts had no response. Questions included arithmetic and yes/no items presented through auditory, visual or tactile methods. Pre-agreed eye or facial signals were assessed with polysomnography and blinded rating. The study tested limited two-way communication during REM, not telepathy, dreamer-to-dreamer contact or continuous conversation. Real-time dialogue between experimenters and dreamers during REM sleep (Konkoly et al., 2021)

What counts as dialogue, a message or a memory

For this kind of experiment, dialogue means that an external question and an intentional, pre-arranged response can be paired in a documented session. A message is a broader everyday word that may imply content passed from one person to another. A waking memory is what someone reports afterwards. Each can be valuable, but they answer different questions.

Keeping the terms apart also makes a non-response easier to understand. It may mean that no scorable answer appeared in that attempt; it does not automatically settle what the sleeper experienced, remembered or would later describe. The absence belongs in the record because it describes the limits of the protocol, not because it makes the successful cases less interesting.

A fictional coding example

This invented example shows why a later dream description should not be silently converted into the response itself. A study needs a defined way to decide which observed movement counts, and a separate way to handle the person’s account after waking.

Ask what the numerator belongs to

  1. What was the denominator?

    Was the figure based on people, sleep periods, questions, or attempts to obtain a response?

  2. How was success defined?

    A correct, pre-agreed signal is narrower than a feeling that an exchange happened.

  3. How many opportunities had no response?

    A headline about successful replies can leave this essential comparison out.

These questions do not diminish the successful exchanges. They explain why a small set of answers and a large set of non-responses belong in the same finding. Precision makes the result more surprising, not less. It also prevents a percentage or total from floating free of the occasions on which it was calculated.

Keep the headline smaller than the finding

‘Scientists spoke with dreamers’ is a useful starting headline only if the next sentence restores the limits: it was a laboratory protocol, responses depended on agreed signals, and many attempts did not yield one. It does not show that an outside observer can see a dream’s story, or that a person can hold an ordinary chat while asleep.

It also does not describe a feature of a consumer device or an instruction for trying it at home. The value of the work lies in the carefully bounded question it addressed, rather than in a promise that sleep can become a communications channel.

Questions for future research

Future work might ask which kinds of prompts are easiest to answer, how response criteria travel between laboratories, or how a waking report relates to a signal from the same session. It could also test how researchers distinguish an intentional answer from nearby movements using rules set before the session. Those are research questions, not predictions about what any individual sleeper will do. A good next question preserves the distinction between a recorded response and a rich inner scene.

A brief verified reply is not the same thing as a transcript of a dream.

Sources and further reading

  1. Real-time dialogue between experimenters and dreamers during REM sleep (Konkoly et al., 2021)Primary study of pre-agreed responses to questions during verified REM sleep; accessible full text is also available as a PDF.