The Giants Shoulder

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Matthias Michel is an MIT philosopher and co-founder of the MIT Consciousness Club who has developed one of the most provocative theories of consciousness in recent years: Perceptual Reality Monitoring. He argues your brain runs a constant reality check on every signal it receives — deciding what's real and what's noise — and that this mechanism IS consciousness.
Expect to learn how your brain tells the difference between perception, memory, imagination and noise, why conscious vision lags 400 milliseconds behind reality, why every fast action you've ever taken was driven entirely unconsciously, why fish probably have no conscious visual experience at all, how aphantasics may have mental imagery they can't consciously access, why conscious mental imagery might actually be a bug in the system, what blindsight patient GY's experience reveals about unconscious vision, and much more
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Timestamps:
0:00 Matthias Michel — What Is Perceptual Reality Monitoring?
2:58 How does the brain tell reality from imagination?
5:30 Snake fear in Malaysia: when prediction systems misfire
6:22 Blood vessel shadows and the stuff your brain erases
7:50 Motion-induced blindness: your brain deleting real objects
9:50 Is schizophrenia a broken reality monitor?
11:02 Where does reality monitoring happen in the brain?
12:53 Can you be conscious without a frontal cortex?
15:49 Mark Solms and brainstem consciousness
18:15 What does it mean to see without conscious vision?
18:40 "Tell me what it's like to see behind your head" — blindsight patient GY
20:48 Do fish have conscious vision?
22:05 Why conscious vision is 350-400ms too slow for action
24:07 Two visual systems: one conscious, one not
25:30 The hollow face illusion fools your eyes but not your hand
26:21 Binocular rivalry: your eyes know things you don't
29:24 Sensory horizons: why water limits conscious vision
33:17 Could coral reef fish or octopuses be the exception?
37:31 Are fish complete zombies? (60% confidence)
39:18 Should we still protect fish even if they're unconscious?
42:47 Aphantasia through the lens of reality monitoring
46:00 Why conscious imagery might be a "bug"
48:06 Blank access: using imagery without experiencing it
50:17 What is an unconscious visual representation?
55:54 The strongest counterevidence to unconscious imagery
58:50 Pupil dilation and Joel Pearson's results
1:01:18 How do we falsify unconscious imagery?
1:04:30 The PRM explanation for aphantasia: threshold differences
1:07:50 The future of consciousness and aphantasia research
1:10:29 Vividness is multidimensional — lessons from Russell Hurlburt
1:13:35 Brain imaging limitations and the next breakthrough
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Email for sponsorship enquiries: [email protected]

GS Episodes Mentioned
Mark Solms — https://youtu.be/nMWaQ1U6dcc
Adam Zeman — https://youtu.be/SgA2up6-Bok
Russell Hurlburt (R1) — https://youtu.be/j0gKl-g3DNg
Russell Hurlburt (R2) — https://youtu.be/TfSuvAJB3JU
Merlin Monzel — https://www.youtube.com/watch?v=g21AqnSV1X4
Joel Pearson — https://www.youtube.com/watch?v=_I_7HrWYMQ0
Alfredo Spagna - https://www.youtube.com/watch?v=k8SBHefDnEk

Dr. Alfredo Spagna is a Cognitive Neuroscientist at Columbia University who discovered the Fusiform Imagery Node — the brain region that activates every time you imagine anything. But when he scanned people with aphantasia using an ultra-high-field 7T brain scanner, the node was firing perfectly — it just wasn't connected to the frontal lobe, suggesting that consciousness itself might depend not on what your brain computes, but on what it connects.
Expect to learn how imagination hijacks the brain's perceptual system, why aphantasia shattered 40 years of assumptions about mental imagery, what the "visualizer fallacy" is and why it affects everything from therapy to education, how a painter with aphantasia creates art without ever seeing it in his mind, why your brain imagining a lemon makes you salivate even though there's no lemon, what the 7T brain scanner revealed about the architecture of imagination, how aphantasia may support the Global Neuronal Workspace theory of consciousness, why Olympic athletes spend hours visualizing routines they never physically perform, and much more…
Timestamps
00:08 What Happens in the Brain When You Imagine
01:02 Where Imagination and Perception Diverge
03:44 Would Perfect Imagination Be Hallucination?
05:49 Voluntary vs Involuntary Imagination
06:50 Why Do People with Aphantasia Still Dream?
07:33 What Is Aphantasia — The Discovery That Changed Everything
09:30 The Dissociation That Frightened Scientists
11:06 The Visualizer Fallacy
12:01 How Aphantasics Solve Problems Without Images
14:31 Evan's Sister Discovers Aphantasia at 31
16:55 Could Imagery Be Unconscious in Aphantasia?
18:19 The Architect Who Lost His Imagination
21:11 Eric the Painter — Creating Art Without Seeing It
24:51 The Inner Speech Fallacy and Neurodiversity
29:02 "I Can't Visualize My Mom's Face"
29:57 Why Aphantasia Breaks Psychotherapy
33:06 Empathy, Conflict and How Inner Experience Shapes Society
36:42 The Chemistry Exam Problem
39:09 Is Hypervisualization Actually a Disadvantage?
41:21 Imagination as a Double-Edged Sword
43:37 What Is the Fusiform Imagery Node?
46:10 The Cafeteria Conversation That Started It All
50:07 Three Bombshells From One Meta-Analysis
52:23 Domain-General vs Domain-Specific Imagination
54:05 The Brain Still Imagines in Aphantasia — It Just Disconnects
56:36 Is Aphantasia a Disconnection Syndrome?
58:59 Step-By-Step: What Your Brain Does When You Imagine an Apple
1:05:05 Non-Visual Imagination — Taste, Touch, Sound
1:09:38 What Aphantasia Reveals About Consciousness
1:13:26 Does This Support IIT or Global Workspace Theory?
1:15:49 Can Aphantasia Be Trained Away?
1:18:53 The Olympic Skier Who Visualized Gold
1:22:25 $10 Billion to Solve Imagination — Where Would You Spend It?
...

Email for sponsorship enquiries: [email protected] ❤️ Subscribe to our main channel - https://www.youtube.com/@thegiantsshoulder?sub_confirmation=1💚 Follow on Spotify - https://open.spotify.com/show/5m3Gta5MtIYdk59pb2GJ7M?si=Ka2rAQv7TyqiC9wvGwERpA💜 Follow on Apple Podcasts - https://podcasts.apple.com/ie/podcast/the-giants-shoulder/id1752486249Download my FREE EBook 26 Neuroscience Books for 2026 HERE: https://thegiantsshoulder.com/

Bryan L. Roth is a drug receptor scientist who solved the crystal structure of LSD inside a serotonin receptor and took $26.9 million from DARPA to build a non-hallucinogenic psychedelic — a compound that hits the same receptor as psilocybin, produces antidepressant effects in mice, and doesn't cause a trip.
Expect to learn how his mother's schizophrenia launched a 40-year career in pharmacology, why Salvia divinorum has zero serotonin activity and works entirely through the kappa opioid receptor, why serotonin and opioid receptors converge in the claustrum, why DARPA funded non-hallucinogenic alternatives for soldiers, how his lab screens a trillion compounds that don't physically exist, why only 100 of 26,000 protein targets have ever been drugged, and much more…

Timestamps:
00:00 Bryan L. Roth — The Man Who Builds Non-Hallucinogenic Psychedelics
02:41 Falling Into Receptor Science by Accident
04:58 When Only 5 People on Earth Studied Psychedelic Receptors
06:07 Why "Psychedelic" Was Banned From Research Grants
07:28 The 2016 Papers That Changed Everything
08:26 The Scientist Friend Who Got "Cured" by Psilocybin
10:41 The Vietnam Vet With a Gun in His Mouth — Ibogaine's Power
12:50 What Is Ibogaine and Why Can It Kill You?
18:06 Why the Kappa Opioid System Breaks Reality
19:07 The Hidden History of Psychotomimetic Opioids
22:16 Why Opioid Researchers Deny Kappa Causes Hallucinations
23:18 The Claustrum: Where Serotonin and Opioid Receptors Meet
24:14 Multiple Entry Points Into Reality-Altering Brain Systems
28:35 Why Psychedelic Experiences Feel So Meaningful
29:58 DMT: "More Real Than Reality" — And Nobody Knows Why
31:28 Salvia: Becoming Plaid on a Wall
33:48 Trump's $50M Psychedelic Order Won't Buy One Clinical Trial
35:33 No Other Psychedelic Touches the Kappa Receptor
38:10 The Real Reason He Built a Non-Hallucinogenic Psychedelic
41:33 DARPA: More Psychiatric Casualties Than Physical in the Military
44:48 Biased Agonism: Stripping the Trip From the Therapy
47:19 How GPCRs Work and Why Drug Design Is Still Trial and Error
49:50 People Who Will Never Touch a Psychedelic But Do Cocaine Weekly
52:27 "I Don't Discuss That" — Whether He's Taken Psychedelics
52:47 Screening a Trillion Drugs That Don't Exist
55:02 The Real Bottleneck: 26,000 Targets, Only 100 Drugged...

Email for sponsorship enquiries: [email protected] ❤️ Subscribe to our main channel - https://www.youtube.com/@thegiantsshoulder?sub_confirmation=1💚 Follow on Spotify - https://open.spotify.com/show/5m3Gta5MtIYdk59pb2GJ7M?si=Ka2rAQv7TyqiC9wvGwERpA💜 Follow on Apple Podcasts - https://podcasts.apple.com/ie/podcast/the-giants-shoulder/id1752486249Download my FREE EBook 26 Neuroscience Books for 2026 HERE: https://thegiantsshoulder.com/

Andrés Gómez Emilsson runs research at the Qualia Research Institute and thinks consciousness has a literal mathematical shape. We walk through the six geometric levels of DMT, why phenomenal space goes hyperbolic at high doses, why bad trips are competing symmetries fighting for territory in your visual field, and why he thinks AI on silicon will never be conscious.
Expect to learn why pleasure is symmetry, what makes DMT phenomenologically alien at the topological level, why your breath being out of phase with your heartbeat might be most of what anxiety is, where the free energy principle stops being a theory of consciousness, and why a swimming pool full of logic gates breaks every computational theory of the mind.
Timestamps
00:00 The 6 Geometric Levels of DMT
02:30 Can Subjective Experience Be Studied Like Physics?
03:58 Mapping Experience as a Hypergraph
09:33 Introducing the Symmetry Theory of Valence
12:19 What Symmetry Actually Is (And Why Physics Cares)
19:21 Why Energetic Blockages Feel Bad — Yoga, Jhanas and Wave Propagation
23:06 Is Pleasure Necessarily Symmetrical?
26:31 The Annealing Metaphor: Healing a Broken Cymbal
29:18 Symmetries in the World vs Symmetries in the Brain
32:54 The Bucket Brigade: Why Coupled Oscillators Have to Be in Phase
36:27 Where the Free Energy Principle Stops Being a Theory of Consciousness
39:33 Marr's Levels: Why Friston Describes But Doesn't Explain
42:12 What's Actually Symmetric in the Brain? (Thalamus and Biorhythms)
47:52 Anxiety as Hyperpressurisation
50:13 Connectome Harmonics and the Brain as a Musical Instrument
52:18 The Six Levels of DMT — Threshold, Symmetry Hotel, Magic Eye
55:06 The Magic Eye Level Explained
57:31 Crystal Worlds and the Waiting Room
59:48 The Breakthrough: When Topology Itself Changes
01:01:43 Why Bad Trips Are Competing Symmetries, Not Missing Ones
01:04:35 Square vs Hexagon Universes Fighting for Territory
01:05:54 The LSD Christianity Example
01:07:32 Andrew Gallimore's Alien Worlds — Pre-Configured Reality?
01:09:04 Beam Splitter Holography and the Brain as a Non-Linear Optical Computer
01:10:21 Why DMT Feels So Real — Cross-Modal Coherence and the Tactile Field
01:12:48 The Coupling Kernel and Opposite-Phase Oscillators
01:13:53 DMT Archetypes and the Specificity of Encounters
...
🔗 GS Episodes ReferencedAndrew Gallimore (DMT, alien worlds): https://www.youtube.com/@thegiantsshoulder/search?query=Gallimore
Elizabeth Margulis (music neuroscience): https://www.youtube.com/@thegiantsshoulder/search?query=Margulis
Mark Solms (homeostatic theory of valence): https://www.youtube.com/@thegiantsshoulder/search?query=Solms
🔗 Andrés Gómez Emilsson
Qualia Research Institute: https://qri.org
Qualia Computing (blog): https://qualiacomputing.com
Substack: https://andrsgmezemilsson.substack.comEmail for sponsorship enquiries: [email protected]

Andrew Gallimore is a neurobiologist, pharmacologist and chemist who developed the DMTx protocol — a technology that extends the most intense psychedelic experience known to science from minutes to hours. He is the author of Alien Information Theory, Reality Switch Technologies and Death by Astonishment, and is Director of Noonautics, a nonprofit dedicated to the scientific exploration of consciousness. He currently lives and works in Tokyo.Expect to learn why your brain builds alien worlds on DMT, what thalamocortical loops and attractor states actually are, why DMT may have once been an ancient neurotransmitter, why 94% of users encounter non-human entities, what Jungian archetypes can and can't explain about DMT, where Andrew disagrees with Robin Carhart-Harris on the reality of entities, what the DMTx extended state protocol is and how it works, why DMT is the only psychedelic that doesn't produce tolerance, what happens when entities deny you access to the DMT world, what darkness retreats and breathwork have to do with endogenous DMT, and much more...Timestamps:0:00 Trailer2:11 What Is the Building Alien Worlds Thesis?4:06 What Makes DMT Unique Among Psychedelics?6:57 World Space Landscape and Consensus Reality8:11 DMT Entities — Prevalence and Types11:04 Consistency of Entity Interactions13:31 Is the DMT World Real or a Hallucination?17:34 Thalamocortical Loops and World-Model Construction20:34 Attractor States Explained24:21 Why DMT’s Stability Suggests an Evolutionary Role27:25 Parallel Lives — The DMT Sleep Cycle Hypothesis28:36 What Was the Evolutionary Purpose of the DMT World?33:35 Melatonin, Serotonin and DMT — Pharmacological Cousins35:57 Is DMT Still Doing Something Important in the Brain?36:36 Noonautics and Endogenous DMT Research38:43 Debunking DMT Breathwork Courses and Pineal Myths40:45 What Does a Stable Pattern of Brain Activity Actually Look Like?43:53 Order Within Chaos — Chris Timmermann’s DMTx Findings47:16 Robin Carhart-Harris and the Jungian Archetype Debate48:37 What Jungian Archetypes Actually Are53:36 Why Archetypes Can’t Explain Alien Entities54:32 The Directed World Model — Do Entities Control Access?56:55 DMT Lockout — When Entities Deny You Entry58:30 Can You See Entities in Brain Scans?1:00:06 Future Brain Scanning Technology1:01:24 The Speed of the Switch as Evidence1:04:40 Dimensionality and Topology of the DMT World1:06:39 DMTx — What Is the Extended State Protocol?1:09:03 Target-Controlled Intravenous Infusion Explained1:11:23 Sending Specialists Into DMT Space1:13:35 Time Perception on DMT1:16:16 Surprises from DMTx Experiments1:18:15 The Future of DMT Consciousness Research1:19:12 Andrés Gómez Emilsson and the Mathematics of DMT Space...Email for sponsorship enquiries: [email protected] ❤️ Subscribe to our main channel - https://www.youtube.com/@thegiantsshoulder?sub_confirmation=1💚 Follow on Spotify - https://open.spotify.com/show/5m3Gta5MtIYdk59pb2GJ7M?si=Ka2rAQv7TyqiC9wvGwERpA💜 Follow on Apple Podcasts - https://podcasts.apple.com/ie/podcast/the-giants-shoulder/id1752486249Download my FREE EBook 26 Neuroscience Books for 2026 HERE: https://thegiantsshoulder.com/