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Dr. Reshanne Reeder is a cognitive neuroscientist at the University of Liverpool and creator of the Ganzflicker — a flickering screen that makes most people hallucinate complex scenes within a minute, no drugs required. Her research suggests hallucinations themselves are just disordered mental imagery, and that the most vividly imaginative among us may be the closest normal-range group to a psychotic break.
Expect to learn why a simple red-and-black flicker makes most people hallucinate faces and landscapes within a minute, the accidental lab discovery that led to the Ganzflicker experiment, why she believes hallucinations are simply "disordered mental imagery," why psychedelic and clinical hallucinations come from entirely different brain mechanisms, the 1960s art device built to replace the television, why almost nobody hallucinates their own phone, how aphantasia may carry a hidden cost to face recognition, how she's trying to predict psychosis risk years before it ever develops, and much more…
Timestamps
0:00:00 Trailer
0:02:29 How She Discovered Imagery Isn't One Thing
0:08:43 Can You Decode Images in an Aphantasic's Brain?
0:10:37 The Truth About "Unconscious" Mental Imagery
0:16:01 Imagery vs Imagination: Why They Aren't the Same Word
0:18:55 Imagery, Perception, Hallucination, Dreaming: Where's the Line?
0:20:36 The Hyperphantasics Who Project Images Into the Real World
0:22:23 Her Bold Claim: Hallucinations Are Disordered Imagery
0:23:37 Can Aphantasics Hallucinate on Psychedelics?
0:27:55 The DMT Study Where 90% Said It Felt More Real Than Reality
0:29:39 Why Mental Imagery Breaks the Predictive Brain Theory
0:32:21 The Irish Castle Test: Are Mental Images Just Priors?
0:38:58 She Made People See Faces in Pure Random Noise
0:42:04 The Illusion That Turns Faces Into Monsters
0:45:48 Why Aphantasia Might Come With a Face-Recognition Cost
0:47:35 His Sister Went 31 Years Without Knowing She Had Aphantasia
0:49:59 The Accidental Origin Story of Ganzflicker
0:51:26 The 1700s Origin of the "Whole Field" Hallucination Effect
0:57:41 "I See a Lighthouse": The Moment Ganzflicker Was Born
1:00:28 Why Aphantasics Barely Hallucinate on Ganzflicker
1:05:31 The Sharp Cliff Between Zero and Weak Mental Imagery
1:12:30 Why Nobody Hallucinates Their Phone
1:19:45 The Hypnosis Session That Left His Arm Frozen in the Air
1:22:13 The 1960s "Dream Machine" That Was Supposed to Replace TV
1:35:59 Can This Predict Psychosis Before It Happens?
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GS Episodes Mentioned
Adam Zeman — The Blind Mind's Eye: How Aphantasia Is Rewriting Consciousness ! Dr Adam Zeman: https://www.youtube.com/watch?v=SgA2up6-Bok
Alfredo Spagna — Meet The Neuroscientist Proving We Got Imagination & Aphantasia WRONG!: https://www.youtube.com/watch?v=k8SBHefDnEk
David Luke — Meet the Professor of Paranormal Consciousness - DMT Entities, Telepathy Tapes & OBE's: https://www.youtube.com/watch?v=qLKD1gt1X5o
Karl Friston — Meet The Neuroscientist Who Created The Best Universal Theory Of Brain Function: https://www.youtube.com/watch?v=R-IZOFs4qmY
Anil Seth — No. 1 Consciousness Expert: Optical Illusions that Prove Reality is a Lie, Emotions, Books and AI!: https://www.youtube.com/watch?v=lOSA06K0l1o
Guest Links
University of Liverpool Faculty Page: https://www.liverpool.ac.uk/people/reshanne-reeder
Personal Website (Ganzflicker Demo): https://www.reshannereeder.com/
Bluesky: https://bsky.app/profile/kerblooee.bsky.social
Google Scholar: https://scholar.google.com/citations?hl=en&user=DfdUB3UAAAAJ
LinkedIn: https://uk.linkedin.com/in/reshanne-reeder-53182123b
