Is Reality Real? - Neuroscientist On Evidence We're Living In A Controlled Simulation | Anil Seth

Name: Is Reality Real? - Neuroscientist On Evidence We're Living In A Controlled Simulation | Anil Seth
Uploaded: 2023-05-31T12:04:04.000Z
Duration: 4 h 2 min 21 s

Anil Seth on Consciousness and Death

In this interview, Anil Seth discusses his perspective on death and consciousness. He shares how his understanding of consciousness helped him come to terms with the death of his father.

Understanding Death

Anil Seth reflects on the death of his father and how it has been 10 years since he saw him.

He talks about how people tend to hide away from thinking about death but it is a natural process that happens to everyone.

Anil explains that consciousness is a process that comes to an end when someone dies. He found reassurance in knowing that there is nothing to be frightened of in death because there is no pain or suffering.

Consciousness and Anesthesia

Anil shares how general anesthesia helped him face the death of his father as it brings one close to experiencing what it's like to die.

He explains that under general anesthesia, one becomes an object as consciousness is selectively turned off. However, this is not the same as being dead because the processes of life that animate your body are still ongoing.

Anil believes that having a view of consciousness as a process helps one come to terms with death.

The Mystery of Anesthesia

The interviewer asks how we can still be human when we're asleep for an operation under anesthesia.

Anil explains that under anesthesia, we are reversibly transformed into biological objects where consciousness really is just any kind of experience whatsoever. However, we don't fully understand how and why anesthetics work.

Final Thoughts

Despite not fully understanding anesthesia, it is a remarkable invention as it selectively alters consciousness without killing you.

Anil concludes that death is a natural process and we shouldn't worry too much about what happens after because there is nothing at all.

Understanding Anesthesia and Near-Death Experiences

In this section, the speaker discusses how anesthesia works and how it affects consciousness. They also talk about near-death experiences and provide a scientific explanation for them.

How Anesthesia Works

Parts of the brain stop talking to each other in the ways they normally do in waking consciousness.

Consciousness goes away as the brain disintegrates into little functional islands.

There are case reports of people remembering things while supposedly under general anesthesia, but this could be due to maintaining the balance of anesthesia being tricky or confabulations/hallucinated memories.

If anesthesia is done right, then patients don't have memories of what happened.

Near-Death Experiences

These experiences can be incredibly meaningful for those who have them, but providing a more scientific naturalistic explanation doesn't drain these experiences of meaning.

The experiences themselves are real for those who have them, but their interpretations may not be true.

A common report from a near-death experience is seeing a tunnel of light and then some emergence into surrounding whiteness. This could be interpreted as the soul leaving the body and traveling somewhere, but a more prosaic explanation is that it's what happens when your visual cortex starts shutting down.

What we experience every day is a form of controlled hallucination, and what we call reality are just hallucinations that we all agree on.

The Role of Belief and Ritual in Coping with Death

In this section, the speakers discuss the role of belief and ritual in coping with death. They explore how beliefs can be helpful in providing a framework for dealing with death, even if they conflict with scientific explanations.

The Comforting Role of Belief and Ritual

Beliefs can be helpful in coping with death by providing a framework for understanding it.

Rituals can provide comfort during times of grief by giving people something to do and a sense of participation in a social process.

Examples of rituals include putting Ganga water on the eyes and mouth of the deceased, which is common practice in Hinduism.

Balancing Science and Belief

While beliefs can be comforting, they may conflict with scientific explanations about consciousness or psychology.

As a scientist, it's important to align different ways of understanding what's happening in life to be consistent between scientific knowledge and personal beliefs.

Understanding more about how things are may enable one to live a better life, but it depends on who you are and how you choose to live.

Cultural Differences in Coping with Death

The speakers discuss their different cultural backgrounds and how they cope with death differently.

In Hinduism, there is a belief that the soul is eternal and that reincarnation occurs. This belief provides comfort for some individuals when dealing with death.

Death is often hidden or avoided in Western societies compared to other cultures where it is more openly discussed.

Different Cultural Approaches to Death

In this section, the speakers discuss how different cultures approach death and how it is viewed in Western culture.

Witnessing the Body Being Burnt

In some cultures, such as in Northern India, public cremations on the banks of the river are common.

This is a stark contrast to Western culture where bodies are hidden away.

The speaker shares their experience of witnessing a public cremation for the first time and how it was shocking for them.

Different Kinds of Rituals

There are many cultural variations when it comes to death rituals.

Some Pacific island cultures dig up dead people every year and give them food, drink, and something to smoke before burying them again.

Views on Death

Hinduism views death as a transition from one life to another through reincarnation.

The soul or Atman is believed to be reincarnated after death.

For some individuals, they believe that their loved ones still exist in some way even after they have passed away because part of their self exists within others' minds.

Is Death an Illusion?

In this section, the speakers discuss whether death can be considered an illusion based on their perspectives on consciousness.

Dependency of Consciousness on Brain and Body

The speaker believes that witnessing the dependency of consciousness on the brain and body makes it hard for them to reconcile with the idea that consciousness persists after death.

Changes in the brain are instantly reflected in changes in experience which suggests that consciousness is dependent on brain activity.

Flow of Consciousness

Consciousness is what makes humans different from non-living things like tables.

The flow of consciousness refers to how experiences constantly change over time.

Personal Experience with Death

The speaker shares their personal experience with their father's death and how it was a powerful experience for them.

The speaker's father had been on kidney dialysis for 15 years before his death.

The speaker reflects on an article they wrote about their father's death and how they believed he was lucky to have died in the way that he did.

Understanding Consciousness and Death

In this section, the speaker talks about his father's final moments and reflects on the topic of consciousness and death. He shares his thoughts on when consciousness leaves someone's body and how it relates to near-death experiences.

Dad's Final Moments

On the final day, the speaker's father was in a hospital bed but became alert during lunchtime.

The family members were present with him, and he ate a full lunch after not eating much for a few days.

Over a period of hours, the life force within him started to extinguish as his heart rate changed, blood pressure decreased, and he looked up at the top right corner of the walls for hours.

After Dad was officially medically dead, the speaker called his brother who arrived later that night. They spent a few hours chatting in the hospital room.

When Does Consciousness Leave Someone's Body?

The speaker reflects on when consciousness leaves someone's body and wonders what happens at that moment.

The speaker believes that consciousness leaves someone's body when their brain finally stops functioning.

It is hard to know exactly when it happens because there is still something beating within them even though they are not responding or saying anything.

Near-death experiences may be related to this burst of activity in the brain as death approaches.

Conclusion

The speaker reflects on his father's passing and ponders over questions related to consciousness and death. He believes that understanding these topics can help us appreciate life more fully.

Defining Death and Consciousness

In this section, the speakers discuss the definition of death and when consciousness begins.

When Does Consciousness Begin?

The beginning of consciousness is difficult to define.

It is unclear whether consciousness starts at birth or before.

Studying people between birth and death is easier than studying the beginning of consciousness.

Stages of Consciousness Development

Consciousness develops in stages, not suddenly.

A newborn's experience may be an undifferentiated mass of sensory impressions.

Interesting questions arise about what it's like to experience consciousness at different stages.

Controlled Hallucinations

In this section, the speakers discuss how our brains create a controlled hallucination of reality.

Our Brain's Best Guess

What we experience is our brain's best guess or prediction of what's out there in the world.

There is an essential indirectness between what we experience and what's really there.

Color is a good example because there are no colors objectively in the world.

Perception of Reality

In this section, the speaker discusses how our perception of reality is subjective and dependent on our brains. He explains that color, for example, is not an inherent quality of objects but rather a construction of the brain.

The Subjectivity of Perception

The speaker shares a personal anecdote about looking at the sea with his family and realizing that everything in life is just perspective.

He emphasizes the importance of considering alternate viewpoints and interacting with the world in a way that gets us out of our little tribes.

The speaker questions whether it's accurate to say that the sea is blue or if it's more correct to say "I perceive the sea as blue."

He quotes artist Suzanne who said "color is where the brain and universe meet" to explain how color isn't an inherent quality of objects but rather a construction of the brain.

Controlled Hallucination

The speaker explains that while reality exists, our encounter with it is always a construction.

He emphasizes that we never see things as they really are because we all have different brains.

However, he notes that this doesn't mean they're not real and explains why hallucinations can be problematic when they lose their grip on reality.

Multiple Versions of Ourselves

The speaker discusses how we all see the world through the state of our nervous system and can interpret things differently based on our current state.

He notes that there are multiple versions of ourselves within ourselves that can also perceive things differently.

Interpretation and the Blue/Black vs White/Gold Dress

In this section, the speaker discusses how interpretation plays a key role in our perception of reality. The example of the blue/black vs white/gold dress is used to illustrate how context and individual differences can affect our interpretation.

The Blue/Black vs White/Gold Dress

In 2015, a photo of a dress went viral because people couldn't agree on whether it was blue/black or white/gold.

The colors we perceive depend not only on the light reflected from an object but also on the context in which we view it.

Our brains have a process called color constancy that controls for ambient light, but this process can vary between individuals.

It is possible for someone to see the dress as both blue/black and white/gold depending on the context, but it can be difficult to flip between interpretations.

Overall, this section highlights how interpretation is subjective and influenced by various factors such as context and individual differences. The example of the blue/black vs white/gold dress demonstrates how even something as seemingly objective as color can be interpreted differently by different people.

Understanding Perception Diversity

In this section, the speaker talks about how our perception of things is subjective and varies from person to person. He gives an example of a dress that was seen differently by him and his wife.

Perception Census Project

The Perception Census project aims to understand individual differences in how we perceive things, including color, time flow, music, sound, and emotion.

The project seeks to build a picture of how we differ on the inside just as we do on the outside in terms of skin color, height, body shape etc.

Importance of Recognizing Point of View

Recognizing that everyone has a point of view is important because all we ever see is our own perception.

Cultivating humility about our perceptual interpretations can lead to better communication and empathy towards others who may have different perceptions.

Example: Romantic Couple

The speaker uses an example of a romantic couple to explain the idea of trying to understand what is truth. He emphasizes that recognizing different points of view can lead to more compassion and understanding towards others.

The Importance of Perspective

In this section, the speaker discusses how perspective can shape our understanding of reality and how biases can affect our interpretations.

Different Perspectives

People can have different perspectives on the same situation.

A study was conducted with football fans that showed how their team affiliation affected their interpretation of a game incident.

Biases and Interpretations

Our biases can affect how we interpret events.

Our interpretations are subjective and depend on our perspective.

Recognizing Our Biases

In this section, the speaker emphasizes the importance of recognizing our biases and interpretive processes in order to gain a higher level of context.

Ground Truth vs. Interpretation

It's important to recognize that something happened, but beyond that, interpretations can differ greatly.

We often don't realize that we have biases and interpretive processes that create our world for us.

Mindfulness and Meditation

Practices like meditation and mindfulness can help us develop psychological distance from our biases.

Meditation helps us observe multiple interpretations without buying into them.

Benefits of Meditation and Mindfulness

In this section, the speaker discusses the potential benefits of meditation and mindfulness in developing psychological distance from our biases.

Difficulty with Meditation

Meditation is not easy, especially if you have a fixed idea of what it should be.

One obstacle to meditation is trying to achieve a meditative state.

Witnessing Thoughts and Emotions

Meditation can help us witness our thoughts, experiences, emotions, and moods without buying into them.

Deeper into meditation, we recognize that our thoughts and emotions are constructions.

Conclusion

In this section, the speaker concludes by summarizing the main points of the video.

Main Points

Perspective shapes our understanding of reality.

Our biases affect how we interpret events.

Recognizing our biases is important for gaining a higher level of context.

Meditation and mindfulness can help us develop psychological distance from our biases.

The Benefits of Meditation

In this section, the speaker discusses how meditation can change one's perception of self and reality. They also touch on the practical applications of mindfulness in everyday life.

Meditation and Self-Perception

Studying neuroscience has shown that the experience of self is not fixed but rather a bundle of different experiences and perceptions.

Meditation can help individuals realize that their experience of self is changeable, which can be helpful for those struggling with mental health issues such as depression.

By recognizing that others may see the world differently, mindfulness can help people take a step back from strongly held beliefs during arguments.

Neuroscience and Meditation

Studies have been conducted on individuals who are beginning to meditate or those who have accumulated years or decades of experience.

Differences in brain activity have been observed during meditation, suggesting that meditation changes the brain over time.

Practical Applications

Mindfulness can be helpful for dealing with mental health issues such as depression by breaking negative thought cycles.

Fresh perspectives are important in creative processes, as demonstrated by record producer Rick Rubin seeking fresh ears to listen to an album after months of working on it.

Brain as a Predictive Organ

In this section, the speakers discuss how the brain is a predictive organ and how it generates our experiences of the world. They also touch on the creative aspect of this process and how it makes us all artists.

Brain as a Prediction Machine

The brain is an active interpretive organ that generates our experiences of the world.

This process is not limited to humans but is deeply evolutionary conserved.

Creativity and Perception

Our brains are highly creative and generate our experience of the world.

We are all artists in this view, including animals who share similar brains.

Sine Wave Speech

Sine wave speech demonstrates how our brain's interpretations can change what we consciously experience even for the same objective sound that we might hear.

This phenomenon has been well studied in psychology for a long time and involves taking a spoken phrase and converting it into sine waves to demonstrate how our brains interpret sounds.

Predictive Processing and Perception

In this section, the speakers discuss how predictive processing affects perception. They use examples such as sine wave speech and seeing red cars after buying one to explain how the brain creates expectations about sensory information.

Brain's Interpretation of Sensory Information

The brain uses predictive processing to interpret sensory information.

Predictive processing gives the brain a perspective on basic sound that is common to both treated and noisy whistle sounds.

The brain creates expectations about what the sound means, which changes our perception of it.

Attention and Perception

Attention plays a role in changing our perceptual experience.

Paying attention to different things can make the world seem different.

Inattentional blindness is when we don't experience a change if we're not paying attention or expecting it.

Differences in Perception

Our brains only sample a tiny amount of available information, creating the rest of our visual experience.

Moving our eyes and attention allows us to focus on different things, changing our perceptual experience.

Sine wave speech doesn't depend on attention but changes the brain's template for something, while paying attention turns up some sensory information.

Perception and the Brain

In this section, Anil Seth discusses how our perceptual experiences of the world are distinctive in ways we're trying to measure with perception senses study. He also talks about how recognizing that we each create our own experience in an individually distinctive way can help us better communicate with others.

Our Perceptual Experiences

Our perceptual experiences of the world are individual and distinctive.

Recognizing that we have a perspective that is unique can help us better communicate with others.

Perception Senses Study

The Perception Senses Study is open for people to participate in by answering questions and playing interactive visual illusions.

The study takes about half an hour per section and covers different topics related to perception.

Participants will learn something about their own way of perceiving and how it might relate to others.

Evolution's Role in Perception

Evolution has designed our brains to make sure that most of the time, we see the world in ways that are useful for our survival, behavior, and daily activities.

There is a balance between recognizing our unique perspective while also acknowledging there is a real world out there.

Start from Zero Exercise

Anil Seth shares his "start from zero" exercise where he tries to interact with his wife as if it's the very first time they've met.

This exercise strips away some of the conditioning from previous interactions and allows for a more liberating and enjoyable experience.

Evolution of the Brain and Relationships

The brain has evolved for safety, but in many relationships, the issue is harmony. Our brains did not evolve to deal with the world we live in now. It's important to notice the habits that our brain gets us into and challenge them when we can.

Evolutionary Psychology

In many relationships, the issue isn't safety but harmony.

Our brains did not evolve to deal with the world we live in now.

Social circumstances that our ancestors existed in were very different from today.

Perception of Self

The self is a set of perceptual predictions and a creative act.

Experiences of the world and self are based on exactly the same principles of the brain making predictions about what's going on and updating these predictions testing them against the world.

The relevant part of the world when it comes to self is largely the body so that means then the self is changeable it's always changing.

Interception

Interception is something that can be trained by putting attention on internal state being able to sense body position, movement, balance, etc.

Importance of Paying Attention to Our Internal State

In this section, the speakers discuss the importance of paying attention to our internal state and how modern technology and distractions can disconnect us from ourselves. They also touch on the idea that the brain is not just a computer and that our bodies have their own reality.

Disconnect from Internal State

Many people are disconnected from their internal state due to modern technology and distractions.

Constantly consuming external stimuli can prevent us from putting attention inwards.

Importance of Solitude

The speaker believes that practicing solitude is essential for his health and happiness.

Within solitude, he practices mindfulness and meditation to connect with his internal state.

Brain as a Computer vs Reality of Bodies

The dominant cultural narrative portrays the brain as a thinking thing while the body is just something that needs to be kept healthy.

The brain is often compared to a computer, but this metaphor is inadequate because it does not account for the reality of bodies.

When we pay attention to our bodies, we can dissolve negativity associated with emotions by realizing they are constructions happening within our bodies rather than objectively valid reactions to external events.

Mindful Walking in Minimalist Shoes

In this section, the speakers discuss how wearing minimalist shoes during walks can help individuals become more mindful by connecting them with their movements and interactions with the ground.

Benefits of Minimalist Shoes

Wearing minimalist shoes during walks helps individuals become more mindful by feeling what their feet are doing as they walk and interact with the ground.

This experience can be a beautiful way to connect with oneself and surroundings during walks.

The Relationship Between Emotions and Physiology

In this section, the speaker discusses the relationship between emotions and physiology. They explore whether our emotions drive changes in our body or if it is the other way around.

The 1970s Study on Emotions and Perception

The study involved two groups of male undergraduate students who walked across different bridges.

One group walked across a rickety bridge above a gorge with a raging torrent and rocks far below, while the other group walked across a sturdy bridge with strong handrails and placid waters beneath.

At the end of each bridge, an attractive woman gave them a questionnaire and her phone number for any questions about the study.

More men from the group that crossed the rickety bridge called the woman than those from the group that crossed the sturdy bridge.

This was interpreted as meaning that physiological arousal caused by walking across the rickety bridge was misinterpreted as romantic or sexual excitement towards the woman.

Perception of Physiological Changes

The counter-intuitive view is that our body starts changing in a particular way, and it's our perception of these changes that creates emotion.

Our perception gives meaning to physiological arousal depending on context.

For example, if there was no woman at the end of either bridge, people would interpret their physiological arousal as fear.

Circular Causality

There is circular causality between emotions and physiology; they happen simultaneously rather than one causing another.

Emotions control our body's response to stimuli, but our body's response can also influence how we perceive emotions.

The Self and Psychedelics

In this section, the conversation revolves around the concept of self and how it can be changed. The discussion also touches on the potential therapeutic applications of psychedelics in treating mental health problems.

Psychedelics and Perception of Self

Research suggests that people with depression may have a fixed perception of self.

Psychedelic experiences often lead to a dissolution of ego, resulting in a greater sense of connection with the world.

Psychedelics reveal how indirect and constructed our perceptions can be, which can help us resettle in different ways.

Set and setting are important factors when using psychedelics for therapeutic purposes.

Ritual and Context

Ritual provides context for experiencing death or other significant events.

The Dream Machine project uses fast flickering light on closed eyes to induce visual hallucinations without relying on psychedelics.

Providing structure and support during unusual experiences like those induced by the Dream Machine can encourage reflection on their meaning.

Consciousness

An eight-year-old child might be told that consciousness is what goes away when you go to sleep.

Defining Consciousness

In this section, the speakers discuss how to define consciousness and its properties.

Properties of Consciousness

Consciousness is defined as the subjective experience of things.

It is what makes us more than biological objects roaming around in the subjective dark.

There are some things in life, like consciousness, that we can't necessarily accurately define or put an envelope around.

Consciousness leaves room for the mysterious and the mystical.

Defining Life and Consciousness

Science doesn't need watertight definitions that exhaustively capture every aspect of a phenomenon.

Life was as perplexing to people 150 years ago as consciousness might be now.

Life is part of nature and we understand that we can control aspects of it.

Consciousness is not one thing but a collection of things that share this property that feels like something to be conscious.

Interdisciplinary Nature of Consciousness

In this section, the speakers discuss how consciousness speaks to many different disciplines.

Multidisciplinary Nature of Consciousness

The topic of consciousness converges with psychology, philosophy, maths, science, spirituality.

This multidisciplinary nature makes studying and writing about consciousness both fun and challenging.

Different Perspectives on Consciousness

In this section, the speakers discuss different perspectives on consciousness from spiritual teachers and Swamis.

Eckhart Tolle's Perspective

Eckhart Tolle, a spiritual teacher, says "you don't have consciousness, you are Consciousness."

Swami's Perspective

A Swami explains that consciousness is actually within us and not a part of our body and mind.

Consciousness illuminates and pervades our body and mind. It exists outside our body and minds but can only be known through them.

Consciousness is like light in the space between two people. It's there but can't be experienced until something is there to experience it.

Is Consciousness Generated Within Us?

In this section, the speakers discuss whether consciousness is generated within us or if it exists outside of us.

The Medium of Experience

Consciousness is the medium through which we experience everything.

Whether it's the self or the world, there's something out there that we experience through consciousness.

The Interactions Between Brain, Body, World and Society

In this section, the speaker discusses how the contents of our consciousness depend fundamentally on the interactions between the brain, body, world, society, culture and universe.

The Importance of Interactions

Consciousness depends on experiences such as the world, self, other people, emotions, light color and beauty.

To get the brain to be in particular states we need interactions between the brain, body, world and society.

The contents of our consciousness depend fundamentally on these interactions.

Conclusion

The speaker's work leaves us with a lot to think about and reflect on.