Claims

When the parietal lobe is severely injured or its activity is shut off, people lose the somatic sense of boundary between their body and the environment, finding it extremely difficult or impossible to sit because they cannot distinguish their body from the chair

Neuroscience has never identified a neural correlate of a unified 'self' or 'me'; instead, the sense of self is created by activity in various brain regions (such as the parietal lobe) and can disappear when these areas are damaged or their activity is suppressed.

Visual optical illusions (such as the Müller-Lyer illusion with arrows creating the appearance of unequal line lengths) demonstrate how the brain can be systematically fooled even when the truth is known; this illustrates that perceptual illusions can persist even against intellectual conviction.

Dom D'Agostino (neuropharmacologist and researcher) is very interested in lactate's effects on brain function and specifically studies lactate levels in different contexts (baseline, pre-workout, post-workout) because of this neurological interest, making him particularly interested in how red light therapy affects lactate levels quickly.

Musicians develop improved ability to ignore auditory distractions, benefiting both conversation comprehension and focused listening to specific sounds in recordings.

The auditory system contains more downstream neural pathways from the brain back to sensory organs than upstream pathways from the ear to the brain.

The auditory system is not a unidirectional pathway but a bidirectional system with more feedback pathways from the brain to sensory organs than feedforward pathways.

Musicians develop improved ability to identify subtle differences between different recordings or pieces of audio equipment.

Downstream auditory pathways from the brain enable selective focus on sounds of interest while excluding noise.

The auditory system's timing accuracy may extend to 2–4 microseconds based on additional research, with potential for even finer detection not yet measurable.

The brain develops sensory maps—organized neural structures allocated to specific sensory inputs—and these maps enlarge and become more detailed with increased use of those senses.

Cold plunges or cold showers increase dopamine levels 2.5 times above baseline, which is more than the dopamine elevation from chocolate, sex, or cocaine (which raise dopamine approximately 2 times over baseline), and this elevated dopamine provides sustained motivation, sharpness, and focus throughout the day.

Delaying caffeine intake to 90–120 minutes after waking helps offset cortisol levels in the beginning of the day because adenosine (which builds up during sleep) suppresses when caffeine is immediately consumed, causing a rebound crash in the afternoon, whereas delayed caffeine consumption prevents this crash.

Light exercise in the morning (such as walking, running, weight lifting, or other physical activity) supports dopamine levels throughout the day, which helps maintain motivation, focus, and sharpness.

Getting mineral/salt water in the morning is unpleasant-tasting but produces immediate neurochemical benefits (getting 'neurons firing in your brain right away').

Immediately getting light into your eyes and drinking salt water in the morning helps set the tone for your circadian rhythm, preventing afternoon crashes and enabling sleep when the sun goes down.

Non-Sleep Deep Rest (NSDR) is a practice of lying down for 10–15 minutes without actually sleeping, using meditation or guided practices (such as Dr. Joe Dispenza meditations), which resets the mind, recharges the body, and prepares the nervous system to tackle additional work tasks.

Reading changes your brain specifically in the left ventral occipital temporal region, which is involved in visual processing and becomes specialized for recognizing words and letters as the brain adapts to reading skills

Research from the University of Pavia in Italy showed that subjects who alternated between a 5.5 second inhale and 5.5 second exhale experienced improved blood flow to the brain, lower heart rates, and a stabilized nervous system, which indicated their bodies were performing at peak efficiency.

The longer you remain seated in one place while working, the more your breathing shallows, and shallow breathing means the brain is getting less oxygen.

Movement during a break can help replenish the neurochemicals you need for focus; physical movement activates pathways in the brain that increase dopamine, which is the basis for epinephrine and all neural energy.

Stepping away to get a drink of water, walk around the block, or go to the bathroom to splash water on your face allows you to consciously regulate your breathing and get oxygen to your brain.

Dopamine-seeking behavior (craving Sour Patch Kids, other vices) is an archaic system in conflict with modern health optimization goals; specific cognitive techniques can help overcome these systems

The 10% brain myth—that we use only 10% of our brains and flow involves the full brain on overdrive—is exactly backwards; in flow we use less of the brain, not more, through a process called transient hypofrontality.

In flow, the brain releases five of the most potent neurochemicals that the brain can produce; these neurochemicals amplify physical performance (increased strength, deadened pain, amplified muscle reaction time) and impact cognitive function across motivation, creativity, and learning.

Until 1997, when University of Washington neuroscientist Jaak Panksepp traced the six primary emotional pathways in mammals, emotions were not a serious topic for science; you could talk about fear but not wisdom or empathy—these were considered laughable concepts.

Neurobiology gives science the tools to map and measure what's happening in brains and bodies when experiencing states of consciousness that are often inexplicable.

Self is a network of different structures in the prefrontal cortex that are linked together, and like any network, as parts of it wink out, the network collapses and the sense of self disappears.

The prefrontal cortex handles complex logical decision-making, long-term planning, morality, and willpower; in flow, this portion of the brain shuts down through an efficiency exchange where the brain trades energy for attention, deactivating noncritical structures.

Transcranial magnetic stimulation (TMS) artificially induces flow by shooting a weak magnetic pulse through the prefrontal cortex, lasting 20-40 minutes; in a University of Sydney study, TMS increased solution rates on the nine-dot problem from less than 5% (control) to 43% (TMS group), revealing flow's creative power.

In the 1990s, University of Wisconsin neuroscientist Richard Davidson discovered that Tibetan Buddhists with 30,000 hours of meditation ('cushion time') could put their brains into radical consciousness states with brainwave patterns similar to flow.

Time is calculated all over the prefrontal cortex; as parts of the prefrontal cortex wink out in flow, it can no longer separate past from present from future, plunging us into a state researchers call 'the deep now', which has huge impact on performance because most fears and anxieties are about things that happened in the past or might happen in the future, not the present moment.

In a Stanford neuroscience experiment designed by David Eagleman, the speaker was hoisted 150 feet in the air, dropped into a circus net while wearing a perceptual chronometer on his wrist, in an attempt to understand why time slows down in flow states. The experiment was semi-successful and resulted in six to seven months of hard chiropractic work to restore neck function.

Everything boils down to neurons in your head; you have neurons, so you can learn anything—it's just a matter of trying and putting in the time.

When humans watch a baseball being thrown, the visual cortex doesn't process every microsecond of motion as a chaotic new event but instead straightens the sequence of visual data into a linear, predictable trajectory in neural representations.

McCulloch and his colleagues believe the human brain operates as a machine with principles fundamentally different from conventional computing machines, specifically in how it processes information in parallel rather than sequentially.

McCulloch acknowledges he has made progress on understanding the first half of his question (what a number is) but remains uncertain about the second half (how a man may know a number), and has instead studied simplified biological systems like the frog's eye to approximate answers about neural coding.

The human brain is an organ of such extraordinary complexity that even optimistic neuroscientists believe it will take centuries to fully understand all its mysteries.

The brain uses an 'anastomotic' architecture where information from all sources mixes together before the final output, similar to how tributary streams merge in river systems like the Danube, Nile, or Suwannee River, creating integrated signals rather than parallel but separate channels.

The human nervous system is designed to tolerate continuous neuronal death—thousands of neurons die per day throughout adult life—and the system must be architected so that dying neurons degrade gracefully without catastrophic system failure.

McCulloch's theory of neural computation accounts for and explains the continuous degeneration of neurons throughout adult life while maintaining overall system function.

Scrolling and swiping on devices consume significant bandwidth because the brain's bandwidth is so narrow that most energy goes to maintaining physical cellular structure (pumping sodium and potassium ions across membranes), leaving very little for thought.

The brain and peripheral nervous system are fundamentally a change detector—they respond to any change in the current environment and are particularly sensitive to novelty.

Shortchanging yourself on sleep is functionally equivalent to having a blood alcohol concentration of 0.08 (legal intoxication threshold), causing significant suffering the next day.

Listening to one person speak consumes approximately half of working memory bandwidth; attempting to listen to two people simultaneously exceeds bandwidth capacity and becomes impossible.

Working memory is a mental scratchpad with severely limited capacity for holding information (such as a grocery list or access code), and everything the brain does costs energy in the form of ATP expenditure.

Taking a test requires significant mental energy expenditure, causing fatigue after 3-4 hours of testing despite no physical activity, because thinking itself consumes ATP.

The term 'dopamine reward' is being used too loosely as shorthand for anything that feels good, but there are two distinct pleasure circuits in the brain: one for wanting and reward (diffuse, easy to trigger, impossible to satiate) and one for pleasure and liking (opioid system, smaller, harder to trigger, saitable).

The opioid pleasure system (liking) is smaller in brain extent, harder to trigger, but can be satiated; it is the basis of addiction because it operates differently from the wanting system.

Behavioral addictions (such as excessive screen swiping and TikTok addiction) activate the same brain areas as physical addictions (alcohol, cocaine, and other drugs), as demonstrated in many experiments.