Rapid sequence of visual effects, transitions, dissolves — disorients viewer or mimics altered consciousness. Standard approach for trauma, drug sequences, or psychological breakdown.
If you need a scene where a character's perception collapses — cuts, dissolves, distortions every second — you're working with phantasmagoria. This isn't editing in the classical sense. It's about controlled chaos: visual information is broken down, layered, played backward, accelerated. The viewer shouldn't be able to follow — that's precisely the point.
On set, and especially in the edit, this is achieved through layering. You hold multiple images on screen simultaneously, partly transparent, partly with jump cuts in between. Colors shift, music is distorted or looped. The classic example: a character under shock or drug influence — the environment disintegrates into abstract movements, the partner's face suddenly becomes another person, rooms tilt into each other. Requiem for a Dream uses this excessively — not just for drug sequences, but to visualize psychological destruction. This isn't mere special effects; it's a structural narrative device.
Practically, you work closely with your editor. Phantasmagoria thrives on frame rate — fast cuts (under one second per shot), but also on the balance between transparency and dissolves. Too uniform a rhythm feels tame; you need arrhythmia, unexpected pauses, freeze frames. Color grading is essential here: saturation can swing wildly, or everything is plunged into a monochrome blue. Some DPs work with overexposure or lens flares to further fragment perception.
The difference from editing nervousness lies in the intention. Phantasmagoria is not fast action cuts — it's an attempt to create a visual equivalent of mental breakdown. That's why it works even without a story: a 90-second drug trip needs no plot, only the experience of disintegration. This also makes it fragile — too much of it feels manipulative or tiring. The best phantasmagoria is embedded in the rhythm of the entire narrative, not in isolated scenes.