The idea of controlling what we dream or using downtime to solve complex problems may sound like science fiction in fairly iconic movies like Inception. However, the “dream engineering“has ceased to be a fantasy since science confirms that not only can we influence the content of our dreams, but doing so can improve our mental health and cognitive ability.
The device that whispers. The technique is called Directed Dream Incubation (TDI) and the most recent results, published in 2025, suggest it could be the key to treat chronic nightmares and increase our sense of control over the subconscious. The key is that, unlike spontaneous lucid dreams, this technique uses technology to detect specific phases of sleep and send auditory stimuli.
A recent study published in Sleep Advancesput this system to the test with surprising results. And using a device called Dormiothe researchers monitored the sleep phase N1that is, the transition stage between when we are awake and asleep and which lasts approximately between 1 and 7 minutes.
How it was done. The experiment was simple but effective, since the participants only had to lie down and take a nap. At that moment, upon detecting the onset of sleep, the device the instruction whispered “Think of a tree,” and then the subject had to be awakened briefly to ask for a verbal report and then he was allowed to sleep.
The result was overwhelming: 92% of the participants incorporated the “tree” theme in their dreams. Subjects reported everything from visions of forests and roots to more abstract transformations related to vegetation.
Control as therapy. What was truly revolutionary about the 2025 study wasn’t just getting people to dream about trees, but what happened afterward. The researchers here discovered a significant increase in Dream Self-Efficacy (DSE), which is nothing more than an individual’s belief in their own ability to control or influence their dreams.
Having this sense of being able to control your sleep is crucial for treating disorders such as trauma-related nightmares that are common in post-traumatic stress disorder.
Solving problems. Although the study of Sleep Advances focuses on mental health, other parallel investigations explore the productive aspect. In these experiments, puzzles were used that are difficult for anyone to solve, and that is why while people were sleeping they were induced to dream about this puzzle.
The result was that 42% of participants Those who were induced to dream about the puzzle managed to solve it when they woke up, compared to only 17% of those who did not dream about the problem. This suggests that the brain, when given the right stimulus, can continue to process logical and creative information in the background, a phenomenon that technology now allows us to systematize.
Sleep therapy. Although the aforementioned study had a preliminary sample of 25 people (almost half of whom suffered from frequent nightmares), the data point to a paradigm shift. Until now, we slept “blind”, but tools like Dormio and protocols like TDI suggest a future where sleep is not a passive period, but an active state that we can program. Whether it is to overcome trauma, as they suggest, or to find the solution to a creative problem, technology is beginning to illuminate the darkness of our dreams.
Images | iam_os
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