Scientists say they found a way to communicate with people while they are lucid dreaming, allowing them to perceive questions and respond in real time using eye movements or facial muscle contractions.
A study showed that participants could solve math problems and answer yes-or-no questions during REM sleep, proving that real-time dialogue with a dreaming person is possible. More recently, the startup REM space claimed to have achieved two-way communication between individuals during lucid dreaming.
SOURCE: https://pubmed.ncbi.nlm.nih.gov/33607035
