What Distraction Does to Your Brain—and How To Regain Cognitive Control | Adam Gazzaley
Dan Harris speaks with Adam Gazzaley, M.D., Ph.D., David Dolby Distinguished Professor of Neurology, Physiology, and Psychiatry at UCSF, about how modern life's distractions and multitasking negatively impact attention, memory, and well-being, and practical tools to restore cognitive control.
Deep Dive Analysis
19 Topic Outline
The Evolutionary Mismatch: Ancient Brains in a High-Tech World
Defining Cognitive Control: Attention, Working Memory, Task Switching
Limitations of Cognitive Control and Multitasking's Impact
Multitasking's Pernicious Effects on Relationships, Emotions, Anxiety, Memory
Distinguishing Multitasking from Automatized Tasks
The Mechanism Linking Multitasking to Anxiety
Understanding the Broad 'Cognition Crisis'
Critique of the 'Attention Crisis' Narrative and Technology's Role
Technology as a Double-Edged Sword: Positive and Negative Impacts
Evolutionary Perspective: Optimal Foraging Theory for Information
Differentiating Distraction from Multitasking
Top-Down vs. Bottom-Up Attention Systems
Restoring Cognitive Control: Benefits of Meditation
Restoring Cognitive Control: The Power of Nature Exposure
Restoring Cognitive Control: Importance of Strategic Breaks
Technological Approaches to Brain Enhancement: Neurofeedback and Brain Stimulation
Cultivating a Positive and Intentional Relationship with Technology
The Impact of Music and Rhythm on the Mind
Adam Gazzaley's Work and Resources
9 Key Concepts
Cognitive Control
This refers to the brain's ability to direct its limited resources where and when desired. It encompasses selective and sustained attention, working memory (holding information in mind), and the capacity to switch between tasks effectively.
Multitasking (Neurological)
From a neurological perspective, multitasking is not parallel processing but rather rapid switching between different attention-demanding tasks. Each switch degrades the quality of information engagement, leading to poorer performance across all tasks.
Distraction
Distraction occurs when irrelevant information in the environment interferes with a primary goal, even when one consciously tries to ignore it. The brain's filtering mechanisms are not perfect, allowing this irrelevant information to seep in and create interference.
Cognition Crisis
This term describes a widespread impairment across all aspects of human cognition, including attention, memory, perception, reasoning, decision-making, creativity, emotional regulation, and empathy. It extends beyond clinical mental health diagnoses to affect the general population's ability to think deeply and make future-oriented decisions.
Optimal Foraging Theory (Information)
This theory proposes that humans forage for information in a manner analogous to how animals forage for food. The duration one spends engaging with a piece of information (an 'information patch') is influenced by the content itself and the accessibility of other 'patches' of information.
Top-Down Attention
This is goal-directed attention, where an individual consciously decides what to focus on based on their intentions and goals. It represents a higher-order cognitive function that allows humans to prioritize specific information even if it's not the most salient.
Bottom-Up Attention
This is an evolutionarily ancient form of attention where focus is automatically drawn to novel, salient, or important stimuli in the environment. It's a reflexive response that helps animals and humans detect threats or opportunities without conscious effort.
Neurofeedback
Neurofeedback is a technique where an individual's brain activity, typically measured by EEG, is recorded and presented back to them in real-time. This allows the person to learn to consciously or unconsciously modulate specific brain patterns, such as increasing certain frequency waves.
Neurostimulation
This involves applying external forces, such as electrical currents (transcranial electrical stimulation) or magnetic fields (transcranial magnetic stimulation), to the brain. The goal is to stimulate or modulate neural processes non-invasively, potentially strengthening or changing brain function and plasticity.
10 Questions Answered
Cognitive control is the ability to direct your limited mental resources, including attention, working memory, and task switching, where and when you want them.
Multitasking is neurologically impossible for humans; instead, we rapidly switch between tasks, which degrades the quality of information processing and leads to a cascade of negative consequences for memory, decision-making, relationships, sleep, and increased anxiety.
Multitasking can lead to anxiety because if one is introspective, they become aware of the negative consequences of their fragmented attention on important aspects of life, such as relationships and sleep, creating guilt and distress.
The cognition crisis refers to a broad impairment in all aspects of human cognition, including attention, memory, decision-making, and empathy, affecting everyone, not just those with clinical mental health diagnoses.
While there's debate, technology, particularly how we use it, contributes to fragmented attention, but it's not inherently evil; like fire or medicine, its impact depends on intentional design and use, and we can choose to use it for benefit.
Concentrative meditation, like breath-focused practice, acts as an attention exercise that, with consistent practice, can improve the ability to control and sustain attention, even transferring benefits to other cognitive domains like high-speed visual attention.
Walking in nature engages the bottom-up attention system, which allows the top-down, goal-directed attention system to relax and restore itself from fatigue, similar to physical recovery for athletes.
Effective breaks involve activities that genuinely allow the brain to rest from high cognitive load, such as meditation, relaxation, physical exercise, or nature exposure, rather than switching to another demanding task like checking email or social media.
Yes, technology can be leveraged to deliver adaptive, personalized cognitive challenges and training experiences, such as closed-loop video games or rhythmic training, to improve brain capacity and function.
The brain is a rhythmic machine, and engaging in rhythmic experiences, such as through music training, can fine-tune brain function, leading to improvements in cognitive control, working memory, and even reading fluency.
15 Actionable Insights
1. Prioritize Cognitive Well-being
Recognize that cognition, encompassing attention, memory, decision-making, emotional regulation, and empathy, is foundational to addressing global challenges and personal well-being. This broad understanding should be prioritized for optimization in your life.
2. Avoid Multitasking Habits
Understand that multitasking is a neurological impossibility as our brains can only focus on one thing at a time, leading to doing several things poorly and degrading cognition. This degradation can negatively impact memory, perception, decision-making, relationships, sleep, and increase anxiety.
3. Cultivate Tech Meta-awareness
Develop meta-awareness about your technology usage, understanding how your behaviors with devices influence your life. This awareness is a crucial first step in shifting habits towards healthier engagement.
4. Take Responsibility for Tech Use
Take personal responsibility for how you use technology, rather than handing over control to its powerful influences. Make conscious decisions about your engagement and form new, healthier habits.
5. Establish Phone-Free Zones/Times
Create specific phone-free zones or times, such as not bringing your phone into children’s rooms, during family dinners, or after a certain evening hour. This prevents distraction and enhances the quality of your experiences and relationships.
6. Modify Environment for Focus
Actively modify your environment to reduce the accessibility of distracting information sources, such as putting your phone in your trunk while driving or not having multiple tabs open. This encourages sustained focus on your current task or interaction.
7. Silence Phone Notifications
Prevent your attention from being constantly pulled away by the constant ringing and pinging of your phone, even when monotasking, to maintain focus and reduce interference.
8. Practice Concentrative Meditation
Engage in concentrative meditation, such as breath-focused meditation (e.g., 30 minutes a day, 5 days a week for six weeks), by holding your attention to a subtle stimulus and gently bringing it back when distracted. This practice can improve your ability to control and sustain attention.
9. Seek Nature for Restoration
Spend time in nature to restore cognitive control and alleviate cognitive fatigue. The strong bottom-up influences of the natural world allow your top-down attention to relax and recover.
10. Integrate Regular Cognitive Breaks
Take regular breaks from high-intensity, top-down cognitive activities to prevent fatigue and performance decrement. Recognize that your brain, like your body, needs recovery.
11. Select Restorative Break Activities
Choose breaks that truly restore cognitive control, such as meditation, relaxation, physical exercise, or nature exposure. Avoid switching to other high-intensity or stress-inducing tasks like checking email or social media.
12. Assess Information Quality
Apply a ‘cognitive nutritional index’ to the information you consume, making conscious decisions about what you engage with, similar to how you choose food. Prioritize high-quality cognitive input over low-value ‘doom scrolling’.
13. Engage in Rhythmic Activities
Actively engage in rhythmic experiences, such as music or dance training, to ‘fine-tune’ your brain. Becoming more rhythmic can improve working memory and reading fluency by enhancing neural communication and synchrony.
14. Understand Attention Limitations
Recognize that your brain’s ability to process information is limited, its filtering of irrelevant data is imperfect, and its capacity to sustain attention is finite, making cognitive control vulnerable to interference.
15. Reflect on Multitasking Impact
Engage in introspection about the impact of your multitasking behavior on yourself and your environment. Awareness of its negative consequences (e.g., guilt, sleep issues, disrupted work) can be anxiety-provoking and motivate change.
9 Key Quotes
Multitasking is a computer term. Our brains can only focus on one thing at a time. So multitasking is a neurological impossibility.
Dan Harris
Multitasking, in your brain, you're not parallel processing, as the term might imply. You're really moving between tasks. And with each of these switches, there is a degradation of the quality of information that you are engaging in.
Adam Gazzaley
If you have any degree of awareness and introspection, you're going to be aware and feel the consequences of that negatively. You're going to feel maybe guilt that you're not giving your spouse or your children the attention they deserve.
Adam Gazzaley
The cognition crisis touches everyone. That we have limitations in long-term thinking and decision-making and analytical thought in empathic concern.
Adam Gazzaley
Fire can burn your house down or cook your food, right? And a molecule can be medicine or poison, just depending on the dose.
Adam Gazzaley
If your attention is being pulled away from your focus because you have the goal of focusing on more than one thing at a time, that would be multitasking.
Adam Gazzaley
Our brains are remarkably plastic. And if you expose it to a new way of interacting with the world and new behaviors and new habits, it will adapt to it.
Adam Gazzaley
All information is not created equal, like all food is not created equal. And so there's sort of like a cognitive nutritional index that you might be able to apply to things that you engage in.
Adam Gazzaley
If we hand over the keys and say, technology is too powerful and we're just going to let it control us... I think we're doomed.
Adam Gazzaley
1 Protocols
MetaTrain Concentrative Meditation Practice
Adam Gazzaley- Focus attention on a subtle stimulus (e.g., breath, body part, or mantra phrase).
- If attention moves from the focus, non-judgmentally bring it back.
- Practice for 30 minutes a day, five days a week, for six weeks.