Before going to bed, we meticulously lock our doors and windows, turn off the lights, and place our devices on charge or hibernation—a nightly ritual of safety and control. Unfortunately, the brain does not always share the same sense of discipline. When we fall asleep, our sensory organs—ears, eyes, nose—and even the ever-serious prefrontal cortex are supposed to power down gracefully. Yet, every so often, the system decides to skip the shutdown protocol and introduces a few unexpected glitches.
These neurological glitches tend to produce the familiar catalogue of dreams: being chased, losing teeth, falling endlessly, or arriving unprepared for an exam you never signed up for. Some experience them only occasionally, while others seem to receive frequent repeat screenings. Regardless of culture or background, these patterns arise from similar quirks in brain wiring—quietly reminding us that beneath all our differences, the subconscious has a rather uniform sense of drama.
If you hear a loud bang, crash, or electric zap just as you drift off, it may simply mean your auditory or visual systems have failed to complete their shutdown sequence. This charming power-down glitch is known as exploding head syndrome. Similarly, if the brain’s balance system—closely linked to the inner ear—doesn’t quite switch off properly, it can produce the rather dramatic sensation of endlessly falling through space in your dreams.
Deep within our brain lies the amygdala—an almond-shaped structure that functions as an early warning system, triggering rapid physical reactions to perceived danger. Occasionally, however, this fear circuitry misfires, producing a false alarm not unlike a highly sensitive smoke detector reacting to toast.
In such moments, one might hear voices or feel a disturbingly real sensation of being touched. These false triggers are typically the result of threat-detection glitches occurring in darkness, during low sensory input, or when the brain is simply running on emotional overtime.
Fortunately, our bodies are intentionally paralysed during sleep; otherwise, these glitches could become physically hazardous. Without this built-in safety feature, we might attempt to run from or fight an entirely imaginary intruder—risking not just a ruined night’s sleep, but also an embarrassing confrontation with empty air.
Some “pro-dreamers” manage to become the creative directors of their own nocturnal movies—a practice known as lucid dreaming. These individuals become fully aware that they are in a dream state and can actively shape their surroundings. Interestingly, even this privilege has its drawbacks: some lucid dreamers report experiencing the same dream repeatedly, to the point of boredom. This is known as Déjà Rêvé, or “already dreamed”—proof that even the imagination can fall into a repeat cycle.
On the other end of the spectrum, some sleepers experience dreams where they go to sleep and have another dream within it. Dreams unfolding in multiple layers can be deeply confusing—a concept explored in Christopher Nolan's blockbuster, Inception.
In other instances, people may find themselves directing a “double act,” a trope familiar from Bollywood cinema. This phenomenon, known as heautoscopy, involves seeing another version of oneself in the same room—sometimes even holding a conversation with one’s own doppelgänger. If this internal production runs too long, the “director” might consider seeking professional advice.
Meanwhile, those who don't visually direct their dreams may simply talk during their sleep. This is a phenomenon called somniloquy—a polite scientific term for this late-night talk show that happens without the sleep-talker’s permission. It becomes even more entertaining when they suddenly break into languages they’ve never learned. Imagine the poor bystander witnessing this—half expecting subtitles to appear, or an exorcist to be on standby.
Even physical exertion, it seems, has been outsourced to the dream world. A gym-freak friend of mine swears he goes for walks and works out in his sleep—fully convinced he’s sweating and burning real calories. At this rate, his subconscious deserves bonus fitness points with the gym membership.
The scientific study of dreams is called oneirology—a field where sleep and neuroscience researchers spend sleepless nights, without dreams of their own, trying to unravel ours. Technically, dreaming is said to be the brain’s way of improvising narratives and running survival training drills. This evolutionary “therapy session” supposedly helps us wake up refreshed the next morning, as if our neurons attended a wellness retreat while we were asleep. In fact, these nightly rehearsals are credited with contributing to our rise as an advanced species. Dreaming also doubles as a kind of overnight housekeeping service, clearing out the mental filing system and offering emotional regulation.
Looking toward the future, highly realistic efforts are already underway to video-record our dreams using AI and machine learning. One day, people may simply share their nocturnal adventures on social media under hashtags like #MyYesterdaysDream, turning a private glitch of the brain into a viral highlight reel—complete with likes, comments, and analysis in the replies.
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