Enhance Your Learning Speed & Health Using Neuroscience Based Protocols | Dr. Poppy Crum

Episode 248 Sep 29, 2025 Episode Page ↗
Overview

Dr. Poppy Crum, a Stanford neuroscientist and former Dolby Chief Scientist, discusses how technology and AI can accelerate neuroplasticity and learning. She explains leveraging smartphones, video games, and "digital twins" to improve learning, health, and environmental optimization.

At a Glance
17 Insights
2h 36m Duration
20 Topics
10 Concepts

Deep Dive Analysis

Neuroplasticity and Brain's Adaptability

Environmental Impact on Perception and Absolute Pitch

How Smartphones Reshape Brain Maps and Communication

Data Compression and Richness of Digital Communication

Bayesian Brain Models and Video Game Training

Leveraging AI for Performance Analytics and Digital Twins

AI as a Tool for Enhanced Learning and Self-Testing

AI's Impact on Cognitive Skill and Germane Load

The Value of Process and AI for Environmental Optimization

AI's Potential to Optimize Waking Brain States

Non-Contact Sensors and Pupillometry for Internal States

Integrated Systems for Situational Intelligence

Quantifying Performance for Habit Formation

AI's Long-Term Impact on Human Cognitive Skills

Understanding Digital Twins and Their Applications

AI for Customization, Blind Spots, and Health Monitoring

Dr. Crum's Journey: Absolute Pitch and Perception

Neuroplasticity Limits and Performance Incentives

Acoustic Arms Race Between Moths and Bats

Animal Sensory Systems and Environmental Detection

Neuroplasticity

The brain's incredible ability to change and adapt in response to experience. This process is constantly shaping our brains through interactions with our environments and the technologies we use daily.

Homunculus

A data representation of how many cells in the brain are allocated to coding and representing touch sensation for different body parts. This map is dynamic, with resources shifting based on an individual's experiences and activities, such as increased sensitivity in fingers from smartphone use.

Absolute Pitch

The ability to hear and identify musical notes with categorical perception, similar to how people see colors, without needing a reference tone. It allows an individual to know the specific frequency of a sound, like an A or a G, directly.

Lossy Compression

An encoding and decoding process where some information is intentionally removed or lost during data compression. The goal is to reduce file size or data volume while maintaining the best possible perceptual experience, as seen in digital audio formats or even acronyms in texting.

Bayesian Brain Model

A concept viewing the brain as a system that takes in data and makes probabilistic decisions rather than deterministic ones. It constantly updates its understanding of the world based on new sensory input, prior experiences, and expectations.

Closed-Loop Training

A learning environment where real-time feedback on performance is provided, allowing for immediate adjustments and rapid iteration. This process helps to build greater neural resolution and sensitivity in the brain for the specific skill being trained.

Digital Twin

A digitized representation of a physical system, environment, or body, designed not to be a full replica but to provide continuous, real-time insights. It integrates data from various interoperable sources to offer understanding and predictive capabilities that would otherwise be inaccessible.

Cognitive Load Theory

A framework that describes the mental effort involved in learning, categorizing it into intrinsic load (difficulty of material), extraneous load (how information is presented or environmental distractions), and germane load (effort to build mental schemas). Understanding these loads helps optimize learning processes.

Germane Cognitive Load

The specific mental effort dedicated to building mental schemas, organizing information, and developing a deep, usable representation of new knowledge. It is the crucial 'work' of learning, without which true understanding and retention are significantly diminished.

Pupillometry

The measurement of pupil size, which serves as a physiological indicator of internal states such as arousal, cognitive load, and perceptual engagement. Changes in pupil diameter reflect autonomic nervous system responses, even below conscious detection.

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Can our brains change more than we realize?

Yes, our brains are much more plastic than commonly believed, constantly being shaped by our environments and the technologies we use daily through neuroplasticity.

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How do technologies like smartphones change our brains?

Technologies don't create new brain resources but reallocate existing cells, building new neural maps and integrations that allow for faster pattern matching and interpretation in communication, like texting.

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What is the difference between absolute pitch and perfect pitch?

Absolute pitch refers to the ability to identify or produce a musical note without a reference, like seeing colors for sound. 'Perfect pitch' is a less accurate term because the standard for what constitutes a specific note (e.g., A) has changed over time.

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How do video games impact brain function?

Playing video games can increase contrast sensitivity (ability to see edges and differentiation) and improve the speed of probabilistic decision-making, leading to foundational shifts in how one experiences the world.

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How can AI be used to improve learning?

AI can be used as a tool to optimize cognition by designing self-tests, identifying weaknesses, and providing feedback on performance, thereby accelerating learning by engaging germane cognitive load.

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What are the two main ways people use technology like AI?

People use technology either to become cognitively smarter, gain more information, and be more effective, or to replace a cognitive skill to be faster, which can diminish cognitive capabilities if not balanced.

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Why is germane cognitive load important for learning?

Germane cognitive load is the mental effort used to build mental schemas and organize information, and without it, true learning and the development of robust mental representations of information do not occur.

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Can AI help us understand and optimize our awake states?

AI, combined with more data from non-contact sensors in our environment (e.g., CO2, sound, posture, pupil size), can help us understand and optimize different awake states by identifying environmental contexts and internal states that drive focus, stress, or joy.

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Will we need to wear many sensors to benefit from future health technologies?

No, future technologies aim for fewer wearables, leveraging non-contact sensors in environments (home, vehicle) and integrated data from existing devices (like earbuds) to provide insights into our physical and cognitive states.

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How can AI help identify health issues early?

AI can discern subtle patterns in data, such as speech (e.g., stutters, pauses, frequency modulations), that indicate potential pathologies like neural degeneration, psychosis, diabetes, or heart disease, often years before clinical symptoms are typically identified.

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What is the true purpose of a spider web for an orb spider?

For orb spiders, their webs are not just for catching prey but also function as a detection device, tuned to resonate at specific frequencies (e.g., 880 Hz) to detect threats like echolocating bats or birds, eliciting a deterministic response from the spider.

1. Conscious Tech Brain Shaping

Actively reflect on how the technologies you use, especially AI and immersive tech, are shaping your brain and cognitive processes. This awareness is crucial for navigating technological integration and ensuring it aligns with your personal growth.

2. Prioritize Cognitive Enhancement

When using technology, always aim to make yourself cognitively smarter and more effective, gaining new insights, rather than simply replacing existing cognitive skills for speed. This approach ensures deeper learning and prevents cognitive dependency.

3. Engage Germane Cognitive Load

During learning, whether with or without AI, actively put in the mental effort to build mental schemas and representations of information. This ‘germane cognitive load’ is essential for true understanding, generalization, and long-term retention.

4. Leverage AI for Self-Testing

Use AI tools to generate custom tests from your learning materials and practice self-testing away from the source material. This method significantly boosts memory consolidation and helps identify and strengthen your cognitive weaknesses.

5. Build AI Computer Vision Apps

Utilize AI to quickly create computer vision applications on mobile devices for real-time data analytics on physical skills, such as swimming strokes or running gait. This democratizes access to performance data, providing insights for neural training.

6. Integrate Real-time Auditory Feedback

Incorporate AI-driven real-time auditory feedback from sensors into your physical training routines. This helps your brain build greater resolution and sensitivity to subtle performance differentiations, accelerating skill acquisition.

7. Create Digital Representatives

Develop or utilize ‘digital twins’ (digital representatives of relevant data from physical systems like your body, home, or skills) to gain continuous, real-time insights. This enables proactive problem-solving and a deeper understanding of system behavior before issues become critical.

8. Frame Change as Critical

When striving for significant behavioral or cognitive changes, frame the desired outcome as critically important to your success or well-being. This mindset can dramatically accelerate neuroplasticity and the formation of new habits.

9. Utilize AI Voice Analysis

Explore future AI-powered voice analysis tools for early detection of potential health issues (e.g., neural degeneration, diabetes, heart disease) or shifts in mental state (e.g., suicidality). These tools can identify subtle cues imperceptible to humans, enabling proactive intervention.

10. Optimize Awake States Dynamically

Seek or develop integrated systems that combine data from your internal state, local environment, and external environment to dynamically optimize your awake states. This can lead to personalized adjustments in your surroundings to enhance focus, relaxation, or performance.

11. Advocate for Non-Contact Sensors

Support the development and integration of non-contact sensors in living and working environments. These unobtrusive sensors can provide continuous data on physiological and cognitive states, enabling proactive adjustments without requiring wearables.

12. Embrace Quantified Aspirational Goals

Adopt quantifiable metrics (e.g., sleep scores, step counts, focused work bouts) as aspirational targets for self-improvement. This approach can create engaging goals and encourage positive behavioral changes.

13. Train Stress Control with Biofeedback

Engage in or develop training environments, potentially gamified, that provide real-time biofeedback on physiological responses (e.g., heart rate, breath rate). This directly trains your neural system to manage stress and self-regulate.

14. Develop Specific Expertise

Intentionally develop expertise in specific areas or skills. Your brain will allocate more dedicated and specific neural resources to support these activities, enhancing your sensitivity and performance in those domains.

15. Recognize Environmental Auditory Shaping

Be aware that your environment’s unique ‘sonic imprints’ (e.g., city noise levels, specific animal sounds) can subtly shape your hearing sensitivities and neural processing over time.

16. Engage Diverse Sensory Experiences

Actively seek out and engage in diverse and challenging sensory experiences, especially those that require your brain to adapt or override existing neural patterns. This fosters greater neuroplasticity and the development of new sensory maps.

17. Understand Pupil Size as Arousal

Be aware that changes in pupil size, independent of lighting, serve as a deterministic indicator of arousal and cognitive load. This physiological response reflects your mental engagement and can be a target for future biofeedback.

I do think we're much more plastic than we talk about or we realize in our daily lives.

Poppy Crum

Everything we engage with in our daily lives, whether it's the statistics of our environments and our context or the technologies we use on a daily basis, are shaping our brains in ways through neuroplasticity.

Poppy Crum

The homunculus is a representation of how our brain has allocated resources to help us be successful.

Poppy Crum

I think you can look at people's hearing thresholds and predict what city they live in.

Poppy Crum

If you don't have germane cognitive load, you don't have learning, really.

Poppy Crum

We broadcast how we're feeling, right? And we do that wherever we are.

Poppy Crum

The limits on neuroplasticity are really set by how critical it is.

Andrew Huberman

It's to give me insights that are, you know, continuous and in real time that I otherwise wouldn't be able to gain access to.

Poppy Crum

But then you go back, you know, to younger generations and it's an operating system. And it already is.

Poppy Crum

Building a Custom AI Tool for Learning and Performance Enhancement

Poppy Crum
  1. Identify a specific skill or process you want to improve (e.g., swim stroke, running gait, work focus).
  2. Use AI tools (e.g., Perplexity Labs, Repli) to develop a computer vision app that collects data analytics on your performance for that skill.
  3. Set clear targets or desired outcomes for your performance.
  4. Receive real-time feedback (e.g., sonic cues) from the app, which helps build neural resolution and sensitivity.
  5. Continuously use the closed-loop environment to train and improve your performance.
440 hertz
Standard frequency for musical note A (modern) Used in modern music as a standard.
415 hertz
Standard frequency for musical note A (Baroque era) Effectively a G sharp in modern tuning.
40 hours
Hours of Call of Duty to change contrast sensitivity Makes a non-gamer's contrast sensitivity similar to a video game player's, with effects persisting.
28 grams
Protein content in David's protein bar Per bar.
150 calories
Calorie content in David's protein bar Per bar.
0 grams
Sugar content in David's protein bar Per bar.
75%
Percentage of calories from protein in David's protein bar 50% higher than the next closest protein bar.
Up to 27%
Discount on Helix Sleep mattress orders Special offer for Huberman Lab listeners.
Over 200 million
Estimated Americans exposed to PFAS chemicals in tap water (2020) According to a 2020 study by the Environmental Working Group.
Over 122 million
Estimated Americans drinking tap water with high levels of cancer-causing chemicals According to the Environmental Working Group.
10 years
Time before neural degeneration symptoms appear clinically Speech analysis by AI can detect signs of neural degeneration up to 10 years before typical clinical symptoms.
880 hertz
Resonant frequency of orb spider webs Causes the spider to 'dance' or respond, indicating detection of predators like bats or birds.
6K and 40K
Frequency peaks for cricket bimodal neurons The same neuron elicits completely different behaviors depending on whether it hears 6K or 40K Hz.