Gravity's Rainbow

botany, shoes, books, and justice

August 12, 2016
by sarcozona
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Migraines or Bremen

Hubert Airy, a doctor in the 1800s, drew pictures of his aura that are instantly recognizable to many migraineurs. My auras are often made of moving, close together lines, but very rarely in a fortification pattern. Also, mine are typically … Continue reading

 Papanague [subject #46], Disturbed "visual snow" vision, 2006. © 2006 Papanague

Papanague [subject #46], Disturbed “visual snow” vision, 2006. © 2006 Papanague

Most of the time at least part of my visual field is continuous TV-static-like tiny flickering dots. Sometimes it expands to cover my entire visual field. This is officially called visual snow. I always thought it was part of my migraines. Perhaps it is. But it turns out that visual snow can occur independently of migraine. If you do have visual snow and migraine aura, this increases your likelihood for a whole host of fun visual weirdnesses!

Like:

  • palinopsia: the persistence or recurrence of a visual image after the stimulus has been removed
  • spontaneous photopsia: the presence of perceived flashes of light when nothing is actually happening?
  • photophobia: THE LIGHT IT BURNS
  • nyctalopia: night blindness

I get all of these except the night blindness. Luckily, most are non-existent to background noise outside of a migraine, though the visual snow gets annoying fast when I try to meditate. If I focus on it the wrong way, it gives me a migraine :/

Any visual snow, etc with your migraine?

Headache. 2014 Jun;54(6):957-66. The relation between migraine, typical migraine aura and “visual snow”. Schankin CJ, Maniyar FH, Sprenger T, Chou DE, Eller M, Goadsby PJ.

Patterns

The visions produced by mescal and other hallucinogens would usually
progress from these elementary forms of hallucination to elaborate
visions of a much more personal and sometimes mystical sort (including
scenes of people, animals, and landscapes). But Klüver remarked that the
lower-level, geometric hallucinations that preceded these were
identical to those found in a variety of conditions: migraine, sensory
deprivation, low blood sugar, fever, delirium, or the hypnopompic and
hypnagogic states that come immediately before and after sleep.