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All In The Mind
Your body, your brain, your self
Feb 10, 2023
Exploring the brain's awareness and understanding of the body it belongs to, the podcast discusses topics such as the rubber hand experiment, conditions like Phantom Limb Syndrome and anorexia, the causes of migraine hallucinations and phantom limb syndrome, the role of bodily awareness in consciousness, the rubber hand illusion and its limits, and the significance of consciousness and our brain's interpretation of the world.
30:00
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Quick takeaways
- The brain can be easily tricked into perceiving a rubber hand as part of one's own body through the rubber hand experiment, showcasing the brain's ability to incorporate external objects into its body representation and even influence real hand behavior.
- The brain's awareness of the body is fragile and relies on limited information, leading to gaps in perception that can be easily manipulated and result in phenomena such as optical illusions, bodily distortions, and disassociation between body ownership and agency in certain conditions like alien hand syndrome and anorexia nervosa.
Deep dives
The Rubber Hand Experiment and Brain Perception
The rubber hand experiment, conducted in the 90s, revealed that the brain can be easily tricked into perceiving a rubber hand as part of one's own body. By stroking both the real and rubber hand simultaneously, participants reported feeling a sense of ownership over the rubber hand. This manipulation creates a discrepancy between what is seen and felt, leading the brain to incorporate the rubber hand into one's body representation. Additionally, subsequent experiments found that this illusion caused changes in the real hand's behavior, such as decreased sensitivity to pain and temperature drops.
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