Neuroscientist Reveals The Truth About Memory & How We Can Remember Better | Charan Ranganath

Rangan Chatterjee

Apr 17, 2024

Episode description

VIVOBAREFOOT is sponsoring today's show. To get 20% OFF YOUR FIRST ORDER visit: https://bit.ly/3VVFi8b

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We often think about our memories as a record of the past – but what if they’re only a selective and evolving version of it? Today’s guest is a world-leading memory expert who has a surprising message: we’re not supposed to remember everything. In fact, our brains are designed to forget. And much of what you experience today will be lost by tomorrow.

Dr Charan Ranganath is Professor of Psychology and Neuroscience and Director of the Dynamic Memory Lab at the University of California at Davis. For more than 25 years, he has studied the mechanisms in the brain that allow us to remember past events, using brain imaging techniques, computational modelling and research on patients with memory disorders. The occasion for his appearance on my podcast is the publication of his wonderful new book, Why We Remember: The Science of Memory and How it Shapes Us, which challenges, educates and enlightens, on so much of what we thought to be true about memories.

In this fascinating conversation, he explains that the seemingly selective and unreliable nature of human memory doesn't reveal laziness, distraction or early dementia. Instead, it shows that our brains have not evolved to keep a comprehensive record of events. Rather than live in the past, the brain’s job is to extract the information it needs, to guide our futures.

We also discuss how memories create our sense of self. We learn that our memory is an unreliable narrator but that we can use this to our advantage. By changing our perspective on traumatic experiences, we can feel differently about them in the present – a theory on which many forms of therapy are based.

We also discuss our brain’s ability to change – its plasticity – and how we’re most likely to remember life’s emotional experiences as well as its new and surprising ones. Charan explains why music and smells are evocative cues, why it’s never too late to learn new skills, and why forgetting is a sign of an efficient brain - in fact, one of Charan’s key insights is that we shouldn’t strive to remember more, but to remember better.

This is a fascinating conversation, full of fresh ideas, wisdom and practical advice about a topic that deeply matters to all of us.

#feelbetterlivemore
-----

Connect with Dr Ranganath:
https://www.instagram.com/thememorydoc/
https://twitter.com/CharanRanganath

Dr Ranganath’s book:
Why We Remember: The Science of Memory and How it Shapes Us – US: https://amzn.to/4d235t1 UK: https://amzn.to/4cUT6FT

#feelbetterlivemore #feelbetterlivemorepodcast

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DISCLAIMER: The content in the podcast and on this webpage is not intended to constitute or be a substitute for professional medical advice, diagnosis, or treatment. Never disregard professional medical advice or delay in seeking it because of something you have heard on the podcast or on my website.

Episode description

VIVOBAREFOOT is sponsoring today's show. To get 20% OFF YOUR FIRST ORDER visit: https://bit.ly/3VVFi8b

Download my FREE Sleep Guide HERE: https://bit.ly/3OzqCap

Download my FREE Habit Change Guide HERE: http://bit.ly/3QKGGFW

We often think about our memories as a record of the past – but what if they’re only a selective and evolving version of it? Today’s guest is a world-leading memory expert who has a surprising message: we’re not supposed to remember everything. In fact, our brains are designed to forget. And much of what you experience today will be lost by tomorrow.

Dr Charan Ranganath is Professor of Psychology and Neuroscience and Director of the Dynamic Memory Lab at the University of California at Davis. For more than 25 years, he has studied the mechanisms in the brain that allow us to remember past events, using brain imaging techniques, computational modelling and research on patients with memory disorders. The occasion for his appearance on my podcast is the publication of his wonderful new book, Why We Remember: The Science of Memory and How it Shapes Us, which challenges, educates and enlightens, on so much of what we thought to be true about memories.

In this fascinating conversation, he explains that the seemingly selective and unreliable nature of human memory doesn't reveal laziness, distraction or early dementia. Instead, it shows that our brains have not evolved to keep a comprehensive record of events. Rather than live in the past, the brain’s job is to extract the information it needs, to guide our futures.

We also discuss how memories create our sense of self. We learn that our memory is an unreliable narrator but that we can use this to our advantage. By changing our perspective on traumatic experiences, we can feel differently about them in the present – a theory on which many forms of therapy are based.

We also discuss our brain’s ability to change – its plasticity – and how we’re most likely to remember life’s emotional experiences as well as its new and surprising ones. Charan explains why music and smells are evocative cues, why it’s never too late to learn new skills, and why forgetting is a sign of an efficient brain - in fact, one of Charan’s key insights is that we shouldn’t strive to remember more, but to remember better.

This is a fascinating conversation, full of fresh ideas, wisdom and practical advice about a topic that deeply matters to all of us.

#feelbetterlivemore
-----

Connect with Dr Ranganath:
https://www.instagram.com/thememorydoc/
https://twitter.com/CharanRanganath

Dr Ranganath’s book:
Why We Remember: The Science of Memory and How it Shapes Us – US: https://amzn.to/4d235t1 UK: https://amzn.to/4cUT6FT

#feelbetterlivemore #feelbetterlivemorepodcast

-------
Sign up to my newsletter - FRIDAY FIVE https://drchatterjee.com/fridayfive
Find out about THE THREE QUESTION JOURNAL https://bit.ly/3TSaYtX
Order HAPPY MIND HAPPY LIFE. US & Canada https://amzn.to/3DRxjgp, UK https://amzn.to/304opgJ
Read FEEL GREAT LOSE WEIGHT. US & Canada https://amzn.to/2GWPgls, UK https://amzn.to/2W6bsOE
Order FEEL BETTER IN 5. US & Canada https://amzn.to/2EB2oM0, UK https://amzn.to/2G0XK7l
Read THE STRESS SOLUTION https://amzn.to/2MZ8u8h
Order THE 4 PILLAR PLAN available via http://amzn.to/2yGfpuB Or the US version is HOW TO MAKE DISEASE DISAPPEAR https://amzn.to/2Gj1YEL
-----
Listen to all podcast episodes on https://drchatterjee.com/podcast or via these podcast platforms by searching for 'Feel Better, Live More'.
Apple Podcasts https://apple.co/feelbetterlivemore
Spotify https://open.spotify.com/show/6NyPQfcSR9nj0DPDr2ixrK
-----
Follow Dr Chatterjee at:
Website: https://drchatterjee.com/
Facebook: https://www.facebook.com/drchatterjee
Twitter: https://twitter.com/drchatterjeeuk
Instagram: https://www.instagram.com/drchatterjee/
Newsletter: https://drchatterjee.com/subscription

DISCLAIMER: The content in the podcast and on this webpage is not intended to constitute or be a substitute for professional medical advice, diagnosis, or treatment. Never disregard professional medical advice or delay in seeking it because of something you have heard on the podcast or on my website.

Mindsip insights from this episode:

Utilize psychedelics to revise traumatic memories

Psychedelic psychotherapies, like MDMA for PTSD, may work by allowing you to retrieve memories from a profoundly altered perspective and revise them due to enhanced brain plasticity.

Recognize aging as a transition to wisdom-sharing role

The long post-reproductive human lifespan may have evolved for elders to pass on accumulated wisdom, a change in function rather than a simple decline.

Distinguish between memory and emotion in brain mechanisms

The brain mechanisms for remembering what happened are different from the brain mechanisms responsible for the feelings associated with that memory.

View memory as a painting shaped by perspective

Memory is much more like a painting than a photograph because it combines elements of truth with errors and an interpretation based on our perspective.

Revise memories with each recall to reshape your past

Every time we revisit a memory, we are almost updating it and subtly changing it, rather than accessing a fixed recording of the past.

Unlock dormant memories with the right cues

We have dormant memories that are inaccessible until the right cue, like a song or a smell from the past, provides the key to unlock them.

Establish event boundaries to enhance time perception

A lack of distinct 'event boundaries,' like during the pandemic lockdowns, can lead to a collective amnesia where a long period of time feels like one big blur.

Engage in novel experiences to enhance memory retention

Experiencing something novel and stimulating can rescue otherwise forgettable memories for things that happened right before the new experience.

Transfer gut microbiome to reveal memory impact of diet

In a rat study, transferring the gut microbiome from a rat on a high-sugar diet to a healthy rat caused the healthy rat to develop memory problems.

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