Is Reality Just A Hallucination In The Brain? - Anil Seth

Anil Seth is a professor of cognitive and computational neuroscientist at the University of Sussex, co-director of the Sackler Centre for Consciousness Science, and an author. What is the Self? What does it mean that we are the same person we were 10 years ago? Why do we have a subjective experience of reality at all? Is consciousness created or perceived? These are fundamental questions that philosophers and neuroscientists have been trying to answer for centuries. So can a new science of consciousness give us the answers? Expect to learn why answering the problem of consciousness is such a difficult challenge, why you wake up as the same person everyday, whether we know for a fact that animals are conscious, why perception often is divorced from objective reality, just how reliable our memories are, how to trust your brain even when it's incredibly fallible and much more... Sponsors: Get 5 Free Travel Packs, Free Liquid Vitamin D and more from AG1 at https://drinkag1.com/modernwisdom (discount automatically applied) Get a Free Sample Pack of all LMNT Flavours with your first box at https://www.drinklmnt.com/modernwisdom (automatically applied at checkout) Get £150 discount on Eight Sleep products at https://eightsleep.com/modernwisdom (discount automatically applied) Extra Stuff: Get my free Reading List of 100 books to read before you die → https://chriswillx.com/books/ To support me on Patreon (thank you): https://www.patreon.com/modernwisdom #consciousness #self #psychology - 00:00 Intro 00:28 The Real Problem of Consciousness 04:39 Why is the Self Rooted in Consciousness? 13:10 Thought Experiments to Understand Consciousness 19:39 Are We Experiencing a Controlled Hallucination? 22:40 Looking at Perception Through an Evolutionary Lens 32:29 Studying How to Alter the Predictive Brain 41:17 Where Does Consciousness Arise? 45:38 Testing the Consciousness of Lower Animals 49:36 The Most Common Definitions of Consciousness 59:10 The Challenge of Testing the Internal Processes of Animals 1:05:32 Anil’s Experience with LSD 1:11:04 How Anil’s Studies Have Impacted His Outlook 1:15:58 Where to Find Anil - Get access to every episode 10 hours before YouTube by subscribing for free on Spotify - https://spoti.fi/2LSimPn or Apple Podcasts - https://apple.co/2MNqIgw Get my free Reading List of 100 life-changing books here - https://chriswillx.com/books/ - Get in touch in the comments below or head to... Instagram: https://www.instagram.com/chriswillx Twitter: https://www.twitter.com/chriswillx Email: https://chriswillx.com/contact/

Anil SethguestChris Williamsonhost

Jul 2, 20231h 16mWatch on YouTube ↗

WHAT IT’S REALLY ABOUT

Anil Seth argues reality and self are brain’s controlled hallucinations

Anil Seth explains his “real problem of consciousness” approach, which focuses on explaining the features and mechanisms of conscious experience rather than solving the abstract “hard problem” outright.
He argues that perception is a form of “controlled hallucination,” where the brain constantly predicts and updates a model of the world and the body to keep an organism alive under uncertainty.
The self, in his view, is not a fixed soul-like entity but a layered, continuously changing process of perceptions about the body, agency, emotion, and personal identity.
Seth discusses implications for animal consciousness, hallucinations, split-brain cases, psychedelics, and emotional life, emphasizing that recognizing the constructed, impermanent nature of experience can be both scientifically accurate and personally helpful.

IDEAS WORTH REMEMBERING

5 ideas

Shift focus from the ‘hard problem’ to explaining specific properties of experience.

Instead of trying to magically bridge matter to subjective feeling in one leap, Seth advocates systematically explaining why different experiences (vision, emotion, self) have the character they do in terms of brain and body mechanisms; progress here may eventually dissolve the hard problem.

Perception is best understood as the brain’s prediction machine under uncertainty.

The brain continuously generates predictions about the causes of ambiguous sensory signals and updates them with incoming data; what we experience is the brain’s best guess, not a direct readout of reality, which he labels a ‘controlled hallucination’ constrained by the world.

The self is a changing process composed of multiple layers of experience.

Basic bodily existence, emotions, body-as-object, first-person perspective, agency, and narrative identity are distinct but normally integrated layers; they can come apart in illness or experiments, showing the self is constructed and not a single inner ‘thing’ or soul.

Biological regulation of the body is a fundamental driver of consciousness.

Seth argues the predictive brain evolved primarily to control and regulate the body (homeostasis), with world- and social-modelling built on top—so emotions and bodily feelings are not add-ons but central to how consciousness and self arise.

Studying breakdowns—hallucinations, split brains, brain lesions—reveals how consciousness works normally.

By modeling and comparing specific hallucination types, examining split-brain cases, and seeing which brain structures can be damaged without loss of consciousness, researchers can infer which mechanisms and regions are actually crucial for conscious experience.

WORDS WORTH SAVING

5 quotes

Consciousness exists. We all know what it’s like to have experiences of the world and self.

— Anil Seth

My suspicion and belief really is that by making progress on this real problem, then the hard problem will eventually fade away and just dissolve in a puff of philosophical smoke.

— Anil Seth

The self is not a thing. It’s a process… an unfolding process that encompasses different kinds of perceptual experience.

— Anil Seth

What we experience is not a readout of the sensory signal, but the brain’s predictions about what causes those signals.

— Anil Seth

Emotions are real in the same way that colors are real. They don’t exist out there independently of a mind, but they are critical to our mental lives.

— Anil Seth

The “real problem” of consciousness versus the traditional “hard problem”Perception as prediction and “controlled hallucination”The self as an evolving, multi-layered process rather than a thingThought experiments: Ship of Theseus, teletransportation, split-brain casesEvolutionary and bodily roots of prediction and consciousnessAnimal consciousness and tests for consciousness (mirror test, pain, behavior)Perceptual diversity, neurodiversity, psychedelics, and personal implications for emotions

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