Transcript

00:00:00Focus in the brain is anchored to our visual system.
00:00:03If you want to improve your ability to focus,
00:00:06you need to practice focusing your visual system.
00:00:08Spending just 60 to 120 seconds,
00:00:12focusing my visual attention on a small window of my screen.
00:00:16You can greatly increase your powers of focus
00:00:18and the higher your levels of attention will be.
00:00:21It will wake up the brain.
00:00:22Mental focus follows visual focus.
00:00:25So let's think about visual focus for a second.
00:00:29When we focus on something visually, we have two options.
00:00:33We can either look at a very small region of space
00:00:36with a lot of detail and a lot of precision,
00:00:39or we can dilate our gaze
00:00:40and we can see big pieces of visual space
00:00:42with very little detail.
00:00:43It's a trade-off.
00:00:44We can't look at everything at high resolution.
00:00:46The pupil more or less relates to the fovea of the eye,
00:00:49which is the area in which we have the most receptors,
00:00:52the highest density of receptors that perceive light.
00:00:55And so our acuity is much better
00:00:56in the center of our visual field than in our periphery.
00:00:59And that's because the density,
00:01:01the number of pixels in the center of my visual field
00:01:02is much higher than it is in the periphery.
00:01:04When we focus our eyes, we do a couple things.
00:01:07First of all, we tend to do that
00:01:09in the center of our visual field
00:01:10and our two eyes tend to align
00:01:11in what's called a vergence eye movement
00:01:13towards a common point.
00:01:14The other thing that happens is the lens of our eye moves
00:01:17so that our brain now no longer sees the entire visual world,
00:01:20but is seeing a small cone of visual imagery.
00:01:23That small cone of visual imagery
00:01:25or soda straw view of the world has much higher acuity,
00:01:29higher resolution than if I were to look at everything.
00:01:32Now you say, of course, this makes perfect sense,
00:01:34but that's about visual attention, not mental attention.
00:01:37Well, it turns out that focus in the brain
00:01:40is anchored to our visual system.
00:01:42The key is to learn how to focus better visually.
00:01:45Not only do we develop a smaller visual window into the world,
00:01:49but we activate a set of neurons in our brainstem
00:01:53that trigger the release of both norepinephrine, epinephrine,
00:01:57and acetylcholine.
00:01:58Norepinephrine is kind of similar to epinephrine.
00:02:00So in other words, when our eyes are relaxed in our head,
00:02:03when we're just kind of looking
00:02:04at our entire visual environment, moving our head around,
00:02:06moving through space, we're in optic flow,
00:02:08things moving past us or we're sitting still,
00:02:10we're looking broadly at our space, we're relaxed.
00:02:13When our eyes move slightly inward
00:02:15toward a particular visual target, our visual world shrinks,
00:02:19our level of visual focus goes up,
00:02:21and we know that this relates to the release of acetylcholine
00:02:25and epinephrine at the relevant sites
00:02:27in the brain for plasticity.
00:02:28Now, what this means is that if you have a hard time
00:02:33focusing your mind for sake of reading or for listening,
00:02:37you need to practice, and you can practice,
00:02:40focusing your visual system.
00:02:42Now, this works best if you practice focusing
00:02:44your visual system at the precise distance
00:02:47from the work that you intend to do for sake of plasticity.
00:02:50So how would this look in the real world?
00:02:52Let's say I am trying to concentrate on something related to,
00:02:56I don't know, science, I'm reading a science paper
00:02:58and I'm having a hard time, it's not absorbing.
00:03:00I might think that I'm only looking at the paper
00:03:02that I'm reading, I'm only looking at my screen,
00:03:04but actually my eyes are probably darting around a bit.
00:03:06Experiments have been done on this.
00:03:08Or I'm gathering information from too many sources
00:03:11in the visual environment.
00:03:12Now, presumably, 'cause it's me,
00:03:14I've already had my coffee, I'm hydrated, I'm well rested,
00:03:17I slept well, and I still experience
00:03:19these challenges in focusing.
00:03:21Spending just 60 to 120 seconds
00:03:24focusing my visual attention on a small window of my screen,
00:03:28meaning just on my screen with nothing on it,
00:03:31but bringing my eyes to that particular location
00:03:34increases not just my visual acuity for that location,
00:03:37but it brings about an increase in activity
00:03:40in a bunch of other brain areas that are associated
00:03:43with gathering information from this location.
00:03:47So put simply, if you want to improve your ability to focus,
00:03:51practice visual focus, the finer the visual image,
00:03:54and the more that you can hold your gaze to that visual image
00:03:58the higher your levels of attention will be.
00:04:00So you absolutely have to focus
00:04:02on the thing that you're trying to learn.
00:04:03And you will feel some agitation
00:04:06because of the epinephrine in your system.
00:04:07If you're feeling agitation and it's challenging to focus
00:04:11and you're feeling like you're not doing it right,
00:04:12chances are you're doing it right.
00:04:14And you can practice this ability to stare
00:04:17for long periods of time without blinking.
00:04:18I know it's a little eerie for people to watch,
00:04:20but if your goal is to learn how to control
00:04:22that visual window for sake of controlling your focus,
00:04:25it can be an immensely powerful portal
00:04:27into these mechanisms of plasticity
00:04:29because we know it engages things like nucleus basalis
00:04:32and these other brainstem mechanisms.
00:04:34I get a lot of questions
00:04:37about attention deficit hyperactivity disorder, ADHD,
00:04:41and attention deficit disorder.
00:04:42Some people actually have clinically diagnosed ADD and ADHD.
00:04:46And if you do, you should certainly work
00:04:48with a good psychiatrist to try and figure out
00:04:51the right pharmacology and/or behavioral practices for you.
00:04:54Many people, however,
00:04:55have given themselves a low grade ADHD or ADD
00:04:59because of the way that they move through their world.
00:05:01They are looking at their phone a lot of the time.
00:05:03It's actually very easy to anchor your attention
00:05:05to your phone for the following reason.
00:05:06First of all, it's very restricted in size.
00:05:09So it's very easy to limit your visual attention
00:05:12to something about this big.
00:05:13It's one of the design features of the phone.
00:05:16The other is that just as you've probably heard
00:05:18a picture is worth a thousand words.
00:05:20Well, a movie is worth 10,000 pictures.
00:05:23Anytime we're looking at things that have motion,
00:05:26visual motion, our attentional system
00:05:28will naturally gravitate towards them.
00:05:30It's actually much harder to read words on a page
00:05:33than it used to be for many people
00:05:35because we're used to seeing things spelled out for us
00:05:38in YouTube videos or videos where things move
00:05:42and are very dramatic.
00:05:43It is true that the more that we look
00:05:45at those motion stimuli,
00:05:47the more that we're seeing movies of things
00:05:48and things that are very dramatic and very intense,
00:05:50the worse we're getting at attending
00:05:52to things like text on a page
00:05:54or to listening to something like a podcast
00:05:56and extracting the information.
00:05:58If you think about the areas of life
00:06:00that dictate whether or not we become successful,
00:06:02independent, healthy individuals,
00:06:05most of those involve the kind of boring practices
00:06:08of digesting information on a page.
00:06:10Boring because it's not as exciting in the moment perhaps
00:06:13as watching a movie or something being spoonfed to us.
00:06:16But the more attention that we can put to something,
00:06:19even if it's fleeting and we feel like
00:06:20we're only getting little bits and pieces,
00:06:22shards of the information as opposed to the entire thing,
00:06:25that has a much more powerful effect
00:06:27in engaging this cholinergic system for plasticity
00:06:29than does, for instance, watching a movie.
00:06:31And that's because when we watch a movie,
00:06:34the entire thing can be great, it can be awesome,
00:06:36it can be this overriding experience.
00:06:37But I think for all those experiences,
00:06:39if you're somebody who's interested in building your brain
00:06:42and expanding your brain and getting better at various things,
00:06:45feeling better, doing better, et cetera,
00:06:47one has to ask you how much of my neurochemical resources
00:06:50am I devoting to the passive experience
00:06:52of letting something just kind of overwhelm me and excite me
00:06:55versus something that I'm really trying
00:06:57to learn and take away.
00:06:58And I think that we need to be careful
00:07:00that we don't devote all our acetylcholine and epinephrine,
00:07:03all our dopamine for that matter,
00:07:04to these passive experiences of things
00:07:06that are not going to enrich us and better us.
00:07:09So I don't want to tell people what to do or not to do,
00:07:11but think carefully about how often you're focusing
00:07:14on something and how good you are or poor you are
00:07:16at focusing on something that's challenging.
00:07:19So once you get this epinephrine, this alertness,
00:07:21you get the acetylcholine released
00:07:23and you can focus your attention,
00:07:24then the question is for how long.
00:07:26And the typical learning bout should be about 90 minutes.
00:07:29That learning bout will no doubt include five to 10 minutes
00:07:32of warmup period.
00:07:33I think everyone should give themselves permission
00:07:35to not be fully focused in the early part of that bout,
00:07:38but that in the middle of that bout,
00:07:40for the middle hour or so,
00:07:41you should be able to maintain focus
00:07:42for about an hour or so.
00:07:44So that for me means eliminating distractions.
00:07:46That means turning off the wifi.
00:07:48I put my phone in the other room,
00:07:49but I encourage you to try experiencing what it is
00:07:52to be completely immersed in an activity
00:07:55where you feel the agitation that your attention is drifting,
00:07:57but you continually bring it back.
00:07:59And that's an important point,
00:08:00which is that attention drifts, but we have to re-anchor it.
00:08:02We have to keep grabbing it back.
00:08:04And the way to do that is with your eyes.
00:08:06As your attention drifts and you look away,
00:08:07you want to try and literally maintain visual focus
00:08:10on the thing that you're trying to learn.
00:08:12(upbeat music)

Key Takeaway

You can significantly improve your cognitive focus by practicing visual stillness for one to two minutes, as narrowing your gaze triggers the specific neurochemicals required for deep mental attention and plasticity.

Highlights

Mental focus is biologically anchored to the visual system

Timeline

The Link Between Vision and Mental Focus

The speaker introduces the foundational concept that mental focus follows the visual system. Focusing on a small region of space with high precision allows the brain to wake up and increase its overall powers of attention. This process involves the fovea of the eye, which has the highest density of light receptors and provides the best visual acuity. When we align our eyes in a vergence movement, the lens adjusts to create a "soda straw" view of the world. This narrow cone of imagery is essential because the brain cannot process the entire visual field at high resolution simultaneously.

Neurochemistry of Visual Attention

Focusing the eyes activates a specific set of neurons in the brainstem that trigger the release of norepinephrine, epinephrine, and acetylcholine. These chemicals are critical for neuroplasticity and the ability to maintain a high level of concentration. In contrast, when the eyes are relaxed or moving through "optic flow," the brain remains in a more passive and less focused state. The speaker suggests practicing visual focus at the exact distance of the work you intend to complete. This practice helps overcome common challenges where the eyes may be darting around or gathering too much environmental information.

Implementing the One-Minute Hack

Spending just 60 to 120 seconds staring at a small point or a window on a screen can reset the brain's focus. This exercise increases visual acuity at that location and stimulates other brain areas associated with information gathering, such as the nucleus basalis. The speaker notes that users might feel a sense of agitation during this process due to the release of epinephrine. Feeling that the task is challenging or eerie is actually an indicator that the biological mechanisms for focus are being engaged correctly. Learning to control this visual window is described as an immensely powerful portal into brain plasticity.

The Impact of Modern Technology on ADHD Symptoms

The speaker addresses how many people have developed "low-grade ADHD" symptoms due to constant phone usage and exposure to high-motion stimuli. Phones are designed to restrict visual attention to a small area, but the constant motion of videos makes it difficult to focus on static information like words on a page. While movies and dramatic content are engaging, they often represent passive experiences that do not necessarily enrich or build the brain. The speaker warns against devoting all neurochemical resources, such as dopamine and acetylcholine, to these passive digital experiences. Instead, success often requires the "boring" practice of digesting information from a page, which has a more powerful effect on the cholinergic system.

Structuring the 90-Minute Learning Bout

For effective learning and deep work, the speaker recommends structured bouts of approximately 90 minutes. It is normal to experience a five to ten-minute warmup period where focus is not yet fully sharp. To maintain concentration during the middle hour, one must eliminate distractions by turning off the Wi-Fi or moving their phone to another room. The core of the practice is recognizing when attention drifts and using the eyes to literally re-anchor focus back to the target material. This consistent effort to grab back your attention is the final step in mastering the visual and mental focus loop.

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