registry 1 specimenNo. 0072 Go to sources Watch
Specimen 237specimen-237Dreamachine: lab notes9d5b785114 s
recordingFull-length recordingpending
README.mdDreamachineoverview
setup.mdSeven stages over 114 s: arrival, seating, lamp on, spin-up, 40 s steady flicker, speed co4 entries
measurement.mdEach live window sends ten 32-column retinal frames rendered 20 ms apart, so flicker below2 entries
limitations.mdReal fly photoreceptors follow far faster flicker than the 20 ms model step.3 entries
sources.mdDreamachine (Wikipedia)1 sources
README

Dreamachine

experimentNo. 0072categoryAltered statesrecordingpendingdataCC BY 4.0

The fly sits facing a slotted cylinder that turns on a record turntable around a bare bulb in a modeled 1960s Paris hotel room. The slot flicker reaches its retina as frames rendered 20 ms apart.

Workstation still from Dreamachine

Recording pending publication. Follow along for the release.

Setup

  • Seven stages over 114 s: arrival, seating, lamp on, spin-up, 40 s steady flicker, speed comparison, spin-down.
  • Turntable 78, 45 or 33⅓ rpm, or stopped as a control; slot patterns of 6, 8, 12 or 24 openings per turn; lamp bright, dim or off as a control.
  • An attendant fly operates the bulb and turntable; the speed-comparison step runs through 33⅓, 45 and 78 rpm.
  • Cameras: Hotel room / overview, Fly and cylinder / profile, Slots, bulb and calligraphy, Facing the fly, Overhead, Over the shoulder.

Measurement

  • Each live window sends ten 32-column retinal frames rendered 20 ms apart, so flicker below 25 Hz reaches the model; faster flicker aliases.
  • Measured readouts: LC4 + LPLC2, DNp01, HS + H2 and VS. Input is retinal only; weights are fixed.

Limitations

  • Real fly photoreceptors follow far faster flicker than the 20 ms model step.
  • Gysin's machine is viewed with closed eyes; flies have no eyelids.
  • No visions or alpha entrainment are claimed or measured; the room is modeled on the Beat Hotel, not a survey of it.

Sources