Lucid Dreaming
What you can and cannot do inside a lucid dream
Lucidity is awareness, not control, and the two come apart constantly. Experienced dreamers report a consistent set of things that work, things that fail, and things that end the dream immediately.
The most common misunderstanding about lucid dreaming is that becoming aware you are dreaming confers authorship of the dream. It does not, or at least not reliably. Awareness and control are separable, and most lucid dreams involve a great deal of the first and rather less of the second.
What follows is drawn from the reports of experienced lucid dreamers and from the small experimental literature. It is more descriptive than explanatory, because the mechanisms are largely unknown.
The immediate problem: the dream ends
By far the most common complaint. The moment of realising you are dreaming produces a spike of excitement, and excitement wakes you. Novice lucid dreams frequently last seconds.
The stabilisation techniques that experienced dreamers converge on are consistent and slightly odd:
Engage the senses, especially touch. Rubbing the hands together is the most widely reported technique and appears to work by generating strong tactile input that anchors attention in the dream body. Touching walls, floors, objects.
Spinning. Rotating the dream body is a long-standing technique, described by LaBerge among others, and frequently used to change scene as well as to stabilise.
Look at the ground, or at detail. Focusing on fine visual detail appears to reinforce the visual construction.
Verbal reinforcement. Saying, aloud within the dream, that this is a dream and will continue. Sounds absurd; widely reported as effective.
Do not stare at anything for too long, and do not close your eyes. Both tend to collapse the imagery.
Stay calm. The single most important factor, and the hardest.
If a lucid dream ends and you wake, do not move or open your eyes. Stay still and keep the intention. It is often possible to re-enter the same dream or begin a new one within a minute or two. Moving breaks it. This is the same principle that governs dream recall generally.
What tends to work
Flying is the most commonly reported deliberate action and one of the more reliable, though technique varies enormously between dreamers — some swim, some run and jump, some simply will it. Expectation appears to matter more than method.
Changing location via an intermediate device — walking through a door with the intention that the destination lies beyond it, spinning, or closing and reopening the eyes. Direct scene change by will is less reliable than a transition object.
Summoning people using a similar indirect method: expecting them to be around the corner, or behind the door, rather than materialising them.
Asking dream characters questions. This produces genuinely strange results — characters answer, sometimes with information the dreamer did not consciously have available, and sometimes refuse. It is a striking demonstration that the dreaming brain can generate apparently independent agents.
What tends to fail
Reading. Text is unstable and typically changes or becomes nonsensical. This is the basis of the standard reality check, and it also means you cannot read a book in a dream.
Digital displays and clocks. Same problem.
Light switches. Frequently do not work, or produce the wrong result.
Mirrors. Reflections are often distorted, delayed or absent, and looking in a dream mirror is reported as frequently disturbing.
Complex mental arithmetic. Working memory is degraded, which fits the reduced prefrontal engagement.
Direct commands to the environment. Simply willing something into existence works less well than expecting to find it.
Why the pattern looks like this
Speculatively, but the pattern is coherent.
The failures cluster around functions requiring sustained, precise, rule-governed processing — reading, arithmetic, the physics of a light circuit. These depend heavily on prefrontal and language regions that are less engaged during REM. The dreaming brain can generate the appearance of text but not maintain a stable string of symbols.
The successes cluster around functions the dreaming brain does well anyway: generating imagery, generating characters, generating motion. Control works best when it steers a process already running rather than when it demands something from nothing.
Which is why indirection outperforms command. Expecting to find your friend through the door recruits the dream's own generative machinery. Demanding your friend appear asks it to work against its grain.
The honest limits
Most lucid dreams are short — typically a few minutes, occasionally longer, rarely the extended adventures described in enthusiast literature.
Control is partial. Many lucid dreamers report knowing they are dreaming and being unable to do much about what happens, which can be its own kind of frustrating.
And lucidity is not binary. There is a spectrum from a vague sense that something is odd, through knowing it is a dream while still behaving as if consequences are real, to full awareness with intact memory of waking life and intentions. The last of these is the rarest.
Anyone approaching this expecting a reliably controllable virtual world will be disappointed. Approaching it as an unusual state of consciousness that can sometimes be steered is closer to what it is.
