How To Engage Your Whole Brain
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The Stroke Of Insight That Nobody Wants
This is Dr. Jill Bolte Taylor. She’s a neuroanatomist, who, at the age of 37 (when she was a post-doctoral fellow at Harvard Medical School), had what she refers to as her “stroke of insight”.
That is to say, she had a massive stroke, and after a major brain surgery to remove a clot the size of a golf ball, she spent the next 8 years re-learning to do everything.
Whereas previously she’d been busy mapping the brain to determine how cells communicate with each other, now she was busy mapping whether socks or shoes should go on first. Needless to say, she got an insight into neuroplasticity that few people would hope for.
What does she want us to know?
Dr. Taylor (now once again a successful scientist, lecturer, and author) advocates for “whole brain living”, which involves not taking parts of our brain for granted.
About those parts…
Dr. Taylor wants us to pay attention to all the parts regardless of size, ranging from the two hemispheres, all the way down to the billions of brain cells, and yet even further, to the “trillions of molecular geniuses”—because each brain cell is itself reliant on countless molecules of the many neurochemicals that make up our brain.
For a quick refresher on some of the key players in that latter category, see our Neurotransmitter Cheatsheet 😎
When it comes to the hemispheres, there has historically been a popular belief that these re divided into:
- The right brain: emotional, imaginative, creative, fluid feeling
- The left brain: intellectual, analytical, calculating, crystal thinking
…which is not true, anatomically speaking, because there are cells on both sides doing their part of both of these broad categories of brain processes.
However, Dr. Taylor found, while one hemisphere of her brain was much more damaged than the other, that nevertheless she could recover some functions more quickly than others, which, once she was able to resume her career, inspired her model of four distinct ways of cogitating that can be switched-between and played with or against each other:
Meet The Four Characters Inside Your Brain
Why this matters
As she was re-learning everything, the way forward was not quick or easy, and she also didn’t know where she was going, because for obvious reasons, she couldn’t remember, much less plan.
Looking backwards after her eventual full recovery, she noted a lot of things that she needed during that recovery, some of which she got and some of which she didn’t.
Most notably for her, she needed the right kind of support that would allow all four of the above “characters” as she puts it, to thrive and grow. And, when we say “grow” here we mean that literally, because of growing new brain cells to replace the lost ones (as well as the simple ongoing process of slowly replacing brain cells).
For more on growing new brain cells, by the way, see:
How To Grow New Brain Cells (At Any Age)
In order to achieve this in all of the required brain areas (i.e., and all of the required brain functions), she also wants us to know… drumroll please…
When to STFU
Specifically, the ability to silence parts of our brain that while useful in general, aren’t necessarily being useful right now. Since it’s very difficult to actively achieve a negative when it comes to brain-stuff (don’t think of an elephant), this means scheduling time for other parts of our brain to be louder. And that includes:
- scheduling time to feel (emotionally)
- scheduling time to feel (gut feelings)
- scheduling time to feel (kinesthetically)
…amongst others.
Note: those three are presented in that order, from least basic to most basic. And why? Because, clever beings that we are, we typically start from a position that’s not remotely basic, such as “overthinking”, for example. So, there’s a wind-down through thinking just the right amount, thinking through simpler concepts, feeling, noticing one’s feelings, noticing noticing one’s feelings, all the way down to what, kinesthetically, are we actually physically feeling.
❝It is interesting to note that although our limbic system fucntions throughout our lifetime, it does not mature. As a result, when our emotional “buttons” are pushed, we retain the ability to react to incoming stimulation as though we were a two-year-old, even when we are adults.❞
~ Dr. Jill Taylor
Of course, sometimes the above is not useful, which is why the ability to switch between brain modes is a very important and useful skill to develop.
And how do we do that? By practising. Which is something that it’s necessary to take up consciously, and pursue consistently. When children are at school, there are (hopefully, ideally) curricula set out to ensure they engage and train all parts of their brain. As adults, this does not tend to get the same amount of focus.
“Children’s brains are still developing”—indeed, and so are adult brains:
The Brain As A Work-In-Progress
Dr. Taylor had the uncommon experience of having to, in many ways, neurologically speaking, redo childhood. And having had a second run at it, she developed an appreciation of the process that most of us didn’t necessarily get when doing childhood just the once.
In other words: take the time to feel stuff; take the time to quiet down your chatty mind, take the time engage your senses, and take it seriously! Really notice, as though for the first time, what the texture of your carpet is like. Really notice, as though for the first time, what it feels like to swallow some water. Really notice, as though for the first time, what it feels like to experience joy—or sadness, or comfort, or anger, or peace. Exercise your imagination. Make some art (it doesn’t have to win awards; it just has to light up your brain!). Make music (again, it’s about wiring your brain in your body, not about outdoing Mozart in composition and/or performance). Make changes! Make your brain work in the ways it’s not in the habit of doing.
If you need a little help switching off parts of your brain that are being too active, so that you can better exercise other parts of your brain that might otherwise have been neglected, you might want to try:
Enjoy!
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How To Keep Warm (Without Sweat Patches!)
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝I saw an advert on the subway for a pillow spray that guarantees a perfect night’s sleep. What does the science say about smells/sleep?❞
That is certainly a bold claim! Unless it’s contingent, e.g. “…or your money back”. Because otherwise, it absolutely cannot guarantee that.
There is some merit:
❝Odors can modulate the latency to sleep onset, as well as the quality and duration of sleep. Olfactory modulation of sleep may be mediated by direct synaptic interaction between the olfactory system and sleep control nuclei, and/or indirectly through odor modulation of arousal and respiration.
Such modulation appears most heavily influenced by past associations and expectations about the odor, beyond any potential direct physicochemical effect❞
Source: Reciprocal relationships between sleep and smell
Translating that from sciencese:
Sometimes we find pleasant smells relaxing, and placebo effect also helps.
That “any potential direct physiochemical effect”, though, when it does occur, is things like this…
Read: Odor blocking of stress hormone responses
…but that’s a mouse study, and those odors may only work to block three specific mouse stress responses to three specific stressors: physical restraint, predator odor, and male–male confrontation.
In other words: if, perchance, those three things are not what’s stressing you in bed at night (we won’t make assumptions), and/or you are not a mouse, it may not help.
(and this, dear readers, is why we must read articles, and not just headlines!)
But! If you are going to go for a pillow fragrance, something well-associated with being relaxing and soporific, such as lavender, is the way to go:
- Effects of aromatherapy on sleep quality and anxiety of patients
- Effects of Aromatherapy on the Anxiety, Vital Signs, and Sleep Quality of Percutaneous Coronary Intervention Patients in Intensive Care Units
- Effect of lavender aromatherapy on vital signs and perceived quality of sleep in the intermediate care unit: a pilot study
tl;dr = patients found lavender fragrances relaxing, experienced less anxiety, got better sleep (significantly or insignificantly, depending on the study) and enjoyed lower blood pressure (significantly or insignificantly, depending on the study).
PS: this writer uses a pillow spray like this one
Enjoy!
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Caffeine: Cognitive Enhancer Or Brain-Wrecker?
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The Two Sides Of Caffeine
We asked you for your health-related opinions on caffeine itself, not necessarily the coffee, tea, energy drinks, etc that might contain it.
We have, by the way previously written about the health effects of coffee and tea specifically:
As for our question about caffeine itself, though, we got the above-depicted, below-described, set of results:
- About 59% said “caffeine is a safe stimulant and cognitive enhancer”
- About 31% said “caffeine is a moderately safe recreational drug”
- About 8% said “caffeine’s addictive properties make it de facto bad”
- One (1) person said “caffeine will leave you a trembling exhausted wreck”
But what does the science say?
Caffeine is addictive: True or False?
True, though one will find occasional academics quibbling the definition. Most of the studies into the mechanisms of caffeine addiction have been conducted on rats, but human studies exist too and caffeine is generally considered addictive for humans, for example:
See also:
Notwithstanding its addictive status, caffeine is otherwise safe: True or False?
True-ish, for most people. Some people with heart conditions or a hypersensitivity to caffeine may find it is not safe for them at all, and for the rest of us, the dose makes the poison. For example:
❝Can too much caffeine kill you? Although quite rare, caffeine can be fatal in cases of overdose; such circumstances are generally not applicable to healthy individuals who typically consume caffeine via beverages such as tea or coffee.❞
this paper, by the way, also includes a good example of academics quibbling the definition of addiction!
Caffeine is a cognitive enhancer: True or False?
True, but only in the case of occasional use. If you are using it all the time, your physiology will normalize it and you will require caffeine in order to function at your normal level. To attain higher than that, once addicted to caffeine, would now require something else.
Read more: Caffeine: benefits and drawbacks for technical performance
Caffeine will leave you a trembling exhausted wreck: True or False?
True or False depending on usage:
- The famously moderate 3–5 cups per day will not, for most people, cause any such problems.
- Using/abusing it to make up for lost sleep (or some other source of fatigue, such as physical exhaustion from exertion), however, is much more likely to run into problems.
In the latter case, caffeine really is the “payday loan” of energy! It’ll give you an adrenal boost now (in return, you must suffer the adrenal dumping later, along with lost energy expended in the adrenaline surge), and also, the tiredness that you thought was gone, was just caffeine’s adenosine-blocking activities temporarily preventing you from being able to perceive the tiredness. So you’ll have to pay that back later, with interest, because of the extra time/exertion too.
Want to make caffeine a little more gentle on your system?
Taking l-theanine alongside caffeine can ameliorate some of caffeine’s less wonderful effects—and as a bonus, l-theanine has some nifty benefits of its own, too:
Enjoy!
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Functional Exercise For Seniors – by James Atkinson
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A lot of exercises books are tailored to 20-year-old athletes training for their first Tough Mudder. Others, that the only thing standing between us and a perfect Retroflex Countersupine Divine Pretzel position is a professionally-lit Instagrammable photo.
This one’s not like that.
But! Nor does it think being over a certain age is a reason to not have genuinely robust health, of the kind that may make some younger people envious. So, it lays out, in progressive format, guidelines for exercises targeted at everything we need to build and maintain as we get older.
The writing style is clear, and the illustrations too (the cover art is the same style as the illustrations inside).
Bottom line: if you’re looking for a workout guide that understands you are nearer 80 than 18, and/but also doesn’t assume your age limits your exercise potential to “wrist exercises in chair”, then this book is a fine pick.
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Inheritance – by Dr. Sharon Moalem
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We know genes make a big difference to a lot about us, but how much? And, the genes we have, we’re stuck with, right?
Dr. Sharon Moalem shines a bright light into some of the often-shadowier nooks and crannies of our genetics, covering such topics as:
- How much can (and can’t) be predicted from our parents’ genes—even when it comes to genetic traits that both parents have, and Gregor Mendel himself would (incorrectly) think obvious
- How even something so seemingly simple and clear as genetic sex, very definitely isn’t
- How traumatic life events can cause epigenetic changes that will scar us for generations to come
- How we can use our genetic information to look after our health much better
- How our life choices can work with, or overcome, the hand we got dealt in terms of genes
The style of the book is conversational, down to how there’s a lot of “I” and “you” in here, and the casual style belies the heavy, sharp, up-to-date science contained within.
Bottom line: if you’d like insight into the weird and wonderful nuances of genetics as found in this real, messy, perfectly chaotic world, this book is an excellent choice.
Click here to check out Inheritance, and learn more about yours!
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Black Cohosh vs The Menopause
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Black Cohosh, By Any Other Name…
Black cohosh is a flowering plant whose extracts are popularly used to relieve menopausal (and postmenopausal) symptoms.
Note on terms: we’ll use “black cohosh” in this article, but if you see the botanical names in studies, the reason it sometimes appears as Actaea racemosa and sometimes as Cimicfuga racemosa, is because it got changed and changed back on account of some disagreements between botanists. It’s the same plant, in any case!
Read: Reclassification of Actaea to include Cimicifuga and Souliea (Ranunculaceae)
Does it work?
In few words: it works for physical symptoms, but not emotional ones, based on this large (n=2,310) meta-analysis of studies:
❝Black cohosh extracts were associated with significant improvements in overall menopausal symptoms (Hedges’ g = 0.575, 95% CI = 0.283 to 0.867, P < 0.001), as well as in hot flashes (Hedges’ g = 0.315, 95% CIs = 0.107 to 0.524, P = 0.003), and somatic symptoms (Hedges’ g = 0.418, 95% CI = 0.165 to 0.670, P = 0.001), compared with placebo.
However, black cohosh did not significantly improve anxiety (Hedges’ g = 0.194, 95% CI = -0.296 to 0.684, P = 0.438) or depressive symptoms (Hedges’ g = 0.406, 95% CI = -0.121 to 0.932, P = 0.131)❞
~ Dr. Ryochi Sadahiro et al., 2023
Source: Black cohosh extracts in women with menopausal symptoms: an updated pairwise meta-analysis
Here’s an even larger (n=43,759) one that found similarly, and also noted on safety:
❝Treatment with iCR/iCR+HP was well tolerated with few minor adverse events, with a frequency comparable to placebo. The clinical data did not reveal any evidence of hepatotoxicity.
Hormone levels remained unchanged and estrogen-sensitive tissues (e.g. breast, endometrium) were unaffected by iCR treatment.
As benefits clearly outweigh risks, iCR/iCR+HP should be recommended as an evidence-based treatment option for natural climacteric symptoms.
With its good safety profile in general and at estrogen-sensitive organs, iCR as a non-hormonal herbal therapy can also be used in patients with hormone-dependent diseases who suffer from iatrogenic climacteric symptoms.❞
~ Dr. Castelo-Branco et al., 2020
(iCR = isopropanolic Cimicifuga racemosa)
So, is this estrogenic or not?
This is the question many scientists were asking, about 20 or so years ago. There are many papers from around 2000–2005, but here’s a good one that’s quite representative:
❝These new data dispute the estrogenic theory and demonstrate that extracts of black cohosh do not bind to the estrogen receptor in vitro, up-regulate estrogen-dependent genes, or stimulate the growth of estrogen-dependent tumors❞
Source: Is Black Cohosh Estrogenic?
(the abstract is a little vague, but if you click on the PDF icon, you can read the full paper, which is a lot clearer and more detailed)
The short answer: no, black cohosh is not estrogenic
Is it safe?
As ever, check with your doctor as everyone’s situation can vary, but broadly speaking, yes, it has a very good safety profile—including for breast cancer patients, at that. See for example:
- Black cohosh efficacy and safety for menopausal symptoms: the Spanish Menopause Society statement
- Black cohosh (Cimicifuga racemosa): safety and efficacy for cancer patients
- The safety of black cohosh (Actaea racemosa, Cimicifuga racemosa)
Where can I get some?
We don’t sell it, but here for your convenience is an example product on Amazon
Enjoy!
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An unbroken night’s sleep is a myth. Here’s what good sleep looks like
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What do you imagine a good night’s sleep to be?
Often when people come into our sleep clinic seeking treatment, they share ideas about healthy sleep.
Many think when their head hits the pillow, they should fall into a deep and restorative sleep, and emerge after about eight hours feeling refreshed. They’re in good company – many Australians hold the same belief.
In reality, healthy sleep is cyclic across the night, as you move in and out of the different stages of sleep, often waking up several times. Some people remember one or more of these awakenings, others do not. Let’s consider what a healthy night’s sleep looks like.
Sleep cycles are a roller-coaster
As an adult, our sleep moves through different cycles and brief awakenings during the night. Sleep cycles last roughly 90 minutes each.
We typically start the night with lighter sleep, before moving into deeper sleep stages, and rising again into rapid eye movement (REM) sleep – the stage of sleep often linked to vivid dreaming.
If sleeping well, we get most of our deep sleep in the first half of the night, with REM sleep more common in the second half of the night.
Adults usually move through five or six sleep cycles in a night, and it is entirely normal to wake up briefly at the end of each one. That means we might be waking up five times during the night. This can increase with older age and still be healthy. If you’re not remembering these awakenings that’s OK – they can be quite brief.
What does getting a ‘good’ sleep actually mean?
You’ll often hear that adults need between seven and nine hours of sleep per night. But good sleep is about more than the number of hours – it’s also about the quality.
For most people, sleeping well means being able to fall asleep soon after getting into bed (within around 30 minutes), sleeping without waking up for long periods, and waking feeling rested and ready for the day.
You shouldn’t be feeling excessively sleepy during the day, especially if you’re regularly getting at least seven hours of refreshing sleep a night (this is a rough rule of thumb).
But are you noticing you’re feeling physically tired, needing to nap regularly and still not feeling refreshed? It may be worthwhile touching base with your general practitioner, as there a range of possible reasons.
Common issues
Sleep disorders are common. Up to 25% of adults have insomnia, a sleep disorder where it may be hard to fall or stay asleep, or you may wake earlier in the morning than you’d like.
Rates of common sleep disorders such as insomnia and sleep apnoea – where your breathing can partially or completely stop many times during the night – also increase with age, affecting 20% of early adults and 40% of people in middle age. There are effective treatments, so asking for help is important.
Beyond sleep disorders, our sleep can also be disrupted by chronic health conditions – such as pain – and by certain medications.
There can also be other reasons we’re not sleeping well. Some of us are woken by children, pets or traffic noise during the night. These “forced awakenings” mean we may find it harder to get up in the morning, take longer to leave bed and feel less satisfied with our sleep. For some people, night awakenings may have no clear cause.
A good way to tell if these awakenings are a problem for you is by thinking about how they affect you. When they cause feelings of frustration or worry, or are impacting how we feel and function during the day, it might be a sign to seek some help.
We also may struggle to get up in the morning. This could be for a range of reasons, including not sleeping long enough, going to bed or waking up at irregular times – or even your own internal clock, which can influence the time your body prefers to sleep.
If you’re regularly struggling to get up for work or family needs, it can be an indication you may need to seek help. Some of these factors can be explored with a sleep psychologist if they are causing concern.
Can my smart watch help?
It is important to remember sleep-tracking devices can vary in accuracy for looking at the different sleep stages. While they can give a rough estimate, they are not a perfect measure.
In-laboratory polysomnography, or PSG, is the best standard measure to examine your sleep stages. A PSG examines breathing, oxygen saturation, brain waves and heart rate during sleep.
Rather than closely examining nightly data (including sleep stages) from a sleep tracker, it may be more helpful to look at the patterns of your sleep (bed and wake times) over time.
Understanding your sleep patterns may help identify and adjust behaviours that negatively impact your sleep, such as your bedtime routine and sleeping environment.
And if you find viewing your sleep data is making you feel worried about your sleep, this may not be useful for you. Most importantly, if you are concerned it is important to discuss it with your GP who can refer you to the appropriate specialist sleep health provider.
Amy Reynolds, Associate Professor in Clinical Sleep Health, Flinders University; Claire Dunbar, Research Associate, Sleep Health, Flinders University; Gorica Micic, Postdoctoral Research Fellow, Clinical Psychologist, Flinders University; Hannah Scott, Research Fellow in Sleep Health, Flinders University, and Nicole Lovato, Associate Professor, Adelaide Institute for Sleep Health, Flinders University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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