Voluntary vs involuntary imagery

The recurring distinction aphants draw between imagery they can summon at will (none, or barely any) and imagery that arrives uninvited — flashes, hypnagogic states, dreams.

What people actually say

The definition is about voluntary control

The most-repeated framing in this corpus: aphantasia is specifically the loss of voluntary visualisation, and involuntary imagery doesn't disqualify someone from the label.

"a better description for aphantasia should probably include "inability to voluntarily conjure mental images"" 2017 · t1_dc00t9w ↗

"Aphantasia only pertains to the voluntary side, and doesn't tell you anything about involuntary mental visualization." 2022 · t1_iemu47o ↗

"Aphantasia is the lack of voluntary visualization. Many aphants experience various involuntary visuals such as flashes, dreams and hallucinations." 2025 · t1_makhdru ↗

"If you cannot summon the image at will, you have aphantasia." 2024 · t1_lxiei7o ↗

Flashes near sleep, but not at will

A common shape: brief involuntary images appear in hypnagogic/hypnopompic windows or when very relaxed, and any attempt to look at them dissolves them.

"involuntary flashes of very vague faint imagery as I’m trying to fall asleep, but I can’t willingly conjure specific imagery, and if I make any effort to focus on or look at the imagery it disappears" 2020 · t1_g2qksga ↗

"Every once in a while I do get an image of someone or something in my mind but if I try to focus on it, it vanishes." 2017 · t1_dbzhzsy ↗

"I can get involuntary flashes if I am very relaxed. They sometimes relate to what I am actively thinking about. I am pretty sure it doesn't count as visualizing." 2025 · t1_mamqcvj ↗

"Normal visual imagination is consciously controllable while hypnagogic images are not." 2026 · t1_ojy4w59 ↗

Dreams as the contradiction

Several people highlight the strangeness of having full visual dreams while remaining unable to picture anything awake — evidence the machinery exists but isn't accessible to volition.

"I have near 0 visual thinking when awake, but very visual (POV) dreams. Super weird to me because I know my brain can produce pictures, but for some reason only when I’m asleep" 2024 · t1_kwtb82d ↗

"I have rather vivid dreams, my dreams normally have things like the sense of taste and touch, but when I'm awake I cannot picture anything" 2019 · t1_erz5sge ↗

Variation: vivid, scary, or absent

Not everyone has involuntary imagery, and those who do describe it on a wide spectrum from faint to physiologically intense.

"I cant control the imagery I get (yet) but sometimes it is realistic enough to scare an adrenaline rush." 2020 · t1_g7r1l4q ↗

"I've no conscious mental sensory perception at all, but I experience involuntary imagery from time to time in alternate states of consciousness, including dreams, trances, meditative states, hypnagogic states and hypnopompic states" 2022 · t1_idjc6qt ↗

"I have flashes exactly as they describe and they're definitely not only memories for me, they include things I've never seen before." 2025 · t1_mqecca4 ↗

Across the years

The voluntary/involuntary distinction shows up consistently from 2017 onward and is one of the more stable framings in the corpus. The 2017 chunks already articulate the "should be defined as voluntary" line, and a 2026 chunk repeats the same hypnagogic-vs-controllable contrast almost verbatim. Volume rises in 2020 (7 chunks) and 2025 (6 chunks), tracking broader subreddit growth and the appearance of newer threads about flashes; the conceptual content is largely unchanged across years.

Volume

Cross-references

• Related sub-theme: themes/dreams_visual_dreaming.md
• Related sub-theme: themes/phenomenology_pure_blackness.md
• Related research: /data/space/aphantasia/research/zeman_2015.md (the original "flashes" finding cited in several quotes)