Archives for category: Senses

 

neuroeconomics

Full rights and credits to the content extracted here from Dr Vasily Klucharev. For more information please head to https://www.coursera.org/course/neuroec

 

Have you ever wondered why you like your favourite restaurant?

At the sight of it alone, your brain does into overdrive releasing its favourite yummy drug, dopamine.

This key ingredient helps our brain know what we like, what we choose to buy/do/eat etc, activating reward pathways and helping us remember and learn each time what we like and don’t like.

But how?

Dopamine neurons helps us to know our predicted utility – i.e. based on your past experiences, what you expect to get out of a good meal at your favourite restaurant. Is it the wine? Is it the food? Is it the waiter/ress??

However, when that’s interrupted, or the cue isn’t as we expected, (for example if we experience bad food, or poor service) then we encounter  a prediction error signal – a readjustment – and our brain learns. See the red lines above.

We learn not to go back there next time expecting the same quality meal.

So it’s quite nifty really. Dopamine helps us to modify our expectations and consequently change our behaviour, allowing us to learn to make different – and maybe better – decisions next time we see our favourtite restaurant, so we also don’t keep making the same mistakes.

decision making process in the brain

Full rights and credits to the content extracted here from Dr Vasily Klucharev. For more information please head to https://www.coursera.org/course/neuroec

 

Full rights and credits to the content extracted here from Dr Vasily Klucharev’s course ‘Introduction to Neuroeconomics; how the brain makes decisions’ through the National Research University Russia. Available now as an online learning course through Coursera.com. For more information please head to https://www.coursera.org/course/neuroec

 

the rescuing hug

‘The Rescuing Hug’ – This picture is of two week old twins who were in separate incubators, and one was not expected to live. A hospital nurse fought agast the hospital rules and placed the babies together in one incubator. The healthier of the two threw her arm over her sister in an endearing embrace. The smaller baby’s heart rate stabilised and her temperature rose to normal.

As someone whose nickname was ‘squeeze’ when I was a little girl, I can attest to loving a hug.

But recently, hugs have started to reveal their health effects.

Studies have shown that hugging has been shown to release oxytocin, sometimes referred to as “the love hormone”, in particularly high quantities following positive social interactions (like hugging). Oxytocin is key to boosting trust, sociability, and triggering maternal instincts while lessening anxiety and social fear.

However in 2010, hugging got an upgrade to a healing activity.

A study among couples found that increases in oxytocin following hugs correlated with faster wound healing. The hypothesis was that oxytocin reduces inflammation, thus allowing the wound to heal more quickly.

The study also showed that people who said they felt more social and spousal support and had more hugs and massages had higher oxytocin levels than those who reported less support and physical intimacy.

For man’s best friend, patting your pet also boost oxytocin (for canine and man alike!), and emailing loved ones has the same effect.

Providing doses of oxytocin has also been shown to result in more positive than negative behaviours during disagreements with your partner, confirming prior evidence that oxytocin  affects couples’ positive and negative communication behaviours. Read more on the study here. It also can improve communication skills for autistic children if provided in doses.

So what are you waiting for?

Do as Hunter and Collectors say.

Go find a squeeze.

Hugs are the universal medicine. 

~Author Unknown

20130304-074519.jpg

Flipper is a smart fish.

Not only can he do my favourite trick of warding off sharks, but he also uses his sleep time with an effectiveness most new parents can only dream of.

When sleeping, dolphins can’t afford the luxury of physically stopping for a kip. Instead they need to keep swimming, and crucially breathing, to stay alive.

So how do they sleep?

Scientists have found that they actually manage to switch off half their brain, so that the active part can control swimming and breathing, while the rest rests.

Better than that, they team up in pairs to sleep, switching off the respective inner hemispheres (halves) of their brains, so that the outer halves are alert for predators, attack, Elijah Wood, Paul Hogan etc.

Talk about teamwork.

Check out this highly educational video offering rare insight into dolphins and their brains at work.

Note, if you do not find this funny, we prescribe that you need more sleep.

Your snout is able to determine over 10,000 different smells using about 500 nasal receptors.

However for some people, smell is but a memory.

They are unable to smell a whiff of anything and this total loss of smell is known as anosmia.

It currently affects around 5% of the US population, which means there are around 16 million people unable to smell leaking gas, smoke, or even worse, themselves (resulting often, undertandably, in some level of social anxiety).

As well as that, they sometimes can’t taste the flavours in food.

Your brain portion that controls smell is located at the base of your skull, so even mild head injuries to the back of the head can result in anosmia, however this is often temporary.

But for those whose smell never returns, hallucination of smells can form in their place where people think they smell coffee, smoke or other alarming substances even when there is none.

Hallucinated smells of a particularly vile smell kind are called cacosmia as described by Bonnie Blodgett in her book ‘Remembering Smell’ where she was plunged into a flurry of terrible smells from rotten eggs to chemicals, mould and sick.

On a more positive note, there have been recent studies to suggest that those who have a good sense of smell are more emotionally sensitive (thought to be because the two areas of the brain related to emotion and sense are in the limbic system), and science has taken steps closer to proving the simple truth that a memory can be triggered by a smell due to the proximity of the amygdala (the part of the brain responsible for emotional memory) to the hypothalamus and olfactory tracts (nose!).

So if you can smell the roses, be thankful. Some people are getting noses full of nothing, or worse.

http://www.google.co.uk/imgres?hl=en&tbo=d&biw=1063&bih=580&tbm=isch&tbnid=Qf4Q1xQq7Ouo6M:&imgrefurl=http://www.psychologytoday.com/blog/brain-sense/201003/i-hit-my-head-and-i-cant-smell-thing&docid=SJ5eWnXwWl84aM&imgurl=http://www.psychologytoday.com/files/u610/olf.gif&w=338&h=300&ei=2LciUZa7Heqa1AXGooGABA&zoom=1&ved=1t:3588,r:88,s:0,i:351&iact=rc&dur=2350&sig=104541046096363718316&page=7&tbnh=182&tbnw=238&start=79&ndsp=15&tx=179&ty=69

Facts found in Oliver Sacks’ newest book ‘Hallucinations’.

20130213-190042.jpg

Love can come in the most curious forms.

In his latest book ‘Hallucinations’, Oliver Sacks tells a story about his patient, Gertie C., who suffers intense visual hallucinations as a result of Parkinson’s postencephalictic disease – or ‘frozen’ disease (as described in Sacks’ book and film ‘Awakenings’).

Sometimes frightening, sometimes funny, hallucinations are an offshoot of the disease which is thought to be due to a build up of proteins in the parts of your brain that deals with sight and movement.

After some distress at her visualisations, Gertie decides to submit to the oddities her brain conjures, and embrace the experience instead…

In the form of a hallucinatory gentleman caller.

Every night, he arrives faithfully on her doorstep with flowers, presents, love and warm companionship.

Who says love isn’t real?

Image courtesy of Telegraph.co.uk

Bad day at the office?

In the Olympics, if you choke, it’s 4 years ’til your next review.

Canadian swimming psychologist Hap Davis made his athletes watch video re-runs of their failures on repeat and scanned their brains to see what was going on under the lid.

Initially when watching the video, high level blood flow to their amydala (responsible for emotions) and low-level to their motor cortices (where movement is executed). This likely reflected their physical reaction at the time.

Once they talked it through and explained the feelings of the race, he asked them to re-watch the race.

This time, blood flow to the amydala and pre-frontal cortex (which controls planning) was less, and blood flow to the motor cortex more.

Effectively, talking it out took away the negative emotion.

Who knew?

 

‘French Children Don’t Throw Food’ is a tasty insight into the French way of rearing children who eat all their greens (and fois gras), sleep through the night, play happily on their own, and say ‘hello’, ‘goodbye’ and ‘thank you’ more regularly than any Anglo adult you probably know.

New York-raised Pamela Druckerman noticed these differences whilst living in Paris with her English husband over some years, and her drill-down into how these somewhat magnificent marvels of children evolve is an excellent insight into competing Western parenting ideologies.

French parenting is loosely but largely based on two philosophical bases; the first is Rousseau, whose books ‘Emile’ and ‘On Education’ are still widely regarded in France as the basis of much of their approach to parenting. Through these texts he appealed that a child should be free to explore and discover the world, and let his senses gradually ‘awaken’.

This helps explains to Druckerman what she initially considers to be the strange behaviour of her French friends, who take their two year olds to swimming lessons not to swim, but to learn to enjoy the pleasure of the water… until they’re six (!) and then they start classes. Similarly, gym classes are not for learning triple tucks but for learning to explore their bodies. This couldn’t be further from the Anglo perspective of Piaget’s stage theory, whereby every parent tries to make their child learn things from the get-go in order to evolve their development. The French say, “childhood is so short, why speed it up?”.

The flip-side of Rousseau’s theory is that kids need strict boundaries (so that they can frolick, but safely). What makes kids miserable and tantrums is that they get what they want to such a degree that they don’t know what they want… and they are miserably confused. And noisy about it. “This unaccustomed refusal will give him more torment than being deprived of what he desires… Education is a firm cadre, and inside is liberty,” he says.

As such, a mother’s use of the word “non” is hugely respected by French children because of the way mothers use the word “yes” more of than not. Authoritative as a pose to authoritarian parenting means that children are controlled by a strictness which is an education – a constant gentle tuition of why you do/don’t do thing – and not a punishment. (Although, they do let slip the power of “les gros yeux”, the bigyeyes, whereby mothers can shoot just a look and the kid obeys.)

Also, they allow little discrepancies, one of which is the phrase “Caca Boudin” – which basically means, “poo sausage”. Parents allow kids to mutter, yell or name anything this (within reason) as an acknowledgment that kids have their own little frustrated moments that need airing on occasion. But mostly, aside from harm-prevention, French parents are fairly hands-off and let kids roam around the playground (they don’t hover over the plaything). If they fall, they fall and will be more careful next time.

“The most important thing is that a child will be, in full security, autonomous as possible,” says the number one French parenting guru Francoise Dolto, whose parenting tips from the late 1960s are known as well as Dr Spock’s are in any Western household but for some reason didn’t cross the Channel. In essence,  she believed that a child, a baby, is a rational being. At bedtime, you can speak to a three month old that they must go to sleep, that this is good for them, and that you’ll see them in the morning…. and viola! They are sleeping through the night just like that.

Crucial to this however is the idea of “La Pause” – the idea that French parents do not jump to their child’s crying or spoken demands – they wait for even just a minute or two, (more like 10 minutes at nighttimes) and then calmly attend to them. They believe this teaches a child patience which is crucial to create civiil human being; children cannot learn how to deal with life’s little frustrations if they’re not gently tested this way from the beginning. It also teaches them to wait, and in the interim, to learn to amuse themselves by distracting themselves from the immediate waiting period (ie playing by itself in a cot).

As for food, well perhaps not surprisingly, French parents make the sensory pleasure of eating key to a child’s life. They will steam, puree, roast, pickle and season vegetables any which way until the child understands its many forms, and, eventually of course, likes it. The child must not necessarily finish the food, but they must taste all of it. Also, from the age of 4 months, they eat with the family meals – breakfast, lunch, an afternoon snack, and dinner. And that’s it. The result is most often that the kids are bloody hungry come meal time and will also help to encourage them to eat whatever is there.

But the best, best, best part about this book concerns the preservation of the parents. Ok, so the fully-funded creche and kindies allow mothers to return to work whilst providing wonderful environments for children to interact and grow. (The meals they serve these tots are envy-making too; think Michelin star for kids. But also, French mothers choose to feel no guilt about preserving time for themselves. So much so that they will book their kid in for an extra hour/day per week to read a book, do their hair, or see their husband. When it all gets a bit much, they won’t beat themselves up and say “Oh I’m such a bad mother”. Instead they say to one another “The perfect mother does not exist”. And poof! The guilt is gone.

Above all, the kid understands that though they are loved beyond all measure, the time between mums and dads is precious too, and they are not the centre of the universe. And so, the family balance (and sanity) is preserved.

Get your copy here.

Does I.Q. matter when looking at the super-successful in our world?

The recent New York Times article on natural skill, or I.Q., and practice suggests that I.Q. is the determinate factor in success, not practice. i.e. it doesn’t matter how long you keep trying, you’re more unlikely to get there unless you have a high I.Q. to begin with.

The initial evidence from Florida State University found that excellent violin players, by age 20, had slogged at it for over 10,000 hours, compared with just under 8,000 hours for the “good” players and not even 5,000 hours for the least skilled.

However, the working memory capacity (that is, the capacity of your brain to work on various items simultaneously – think of it as a computer “desktop”), which is a key part of intellectual ability, made a statistically significant contribution, i.e. if you took two pianists with the same amount of practice, but different levels of working memory capacity, it’s likely that the one higher with working memory capacity would have performed considerably better.

Michigan State University researchers recently found that compared with participants in the 99.1 percentile for intellectual ability at age 12, those who were in the 99.9 percentile (the profoundly gifted) were between three and five times more likely to go on to earn a doctorate, secure a patent, publish an article in a scientific journal or publish a literary work.

Don’t stop tinkling the ivories though… it may not lead to super-stardom, but it will lead to a lot of fulfilment. 🙂

La Douleur Exquise (French): The heart-wrenching pain of wanting someone you can’t have.

A great post by Big Think today about 10 relationship words that the English language does not provide for… i.e. they’re not translateable into a similar English word.

Funny part is, if you are an English speaker reading this,  you will read the below words and likely know the emotions probably behind them very well, even though you haven’t got the exact words to express them.

There is a lot of debate in psychology about the importance of language and thought. Some argue that language determines thought (ie you can’t think of something if you don’t know its name). Others argue thought comes before language (ie you can feel something but not have the words to express it)… this article fits into that category whereby these concepts will be very familiar to you (as English speakers) but not registered in your vocab.

Your amygdala (the part of your brain that stores for emotional memory) and your Wernicke’s area (the part of your brain that comprehends language) should be buzzing as you read this… but your Broca’s area (the part that produces speech) might feel a bit left out…

Enjoy the list of words below courtesy of Pamela Haag on Big Think.

Mamihlapinatapei (Yagan, an indigenous language of Tierra del Fuego): The wordless yet meaningful look shared by two people who desire to initiate something, but are both reluctant to start. 

Oh yes, this is an exquisite word, compressing a thrilling and scary relationship moment. It’s that delicious, cusp-y moment of imminent seduction. Neither of you has mustered the courage to make a move, yet. Hands haven’t been placed on knees; you’ve not kissed. But you’ve both conveyed enough to know that it will happen soon… very soon. 

Yuanfen (Chinese): A relationship by fate or destiny. This is a complex concept. It draws on principles of predetermination in Chinese culture, which dictate relationships, encounters and affinities, mostly among lovers and friends.

From what I glean, in common usage yuanfen means the “binding force” that links two people together in any relationship. 

But interestingly, “fate” isn’t the same thing as “destiny.” Even if lovers are fated to find each other they may not end up together. The proverb, “have fate without destiny,” describes couples who meet, but who don’t stay together, for whatever reason. It’s interesting, to distinguish in love between the fated and the destined. Romantic comedies, of course, confound the two.

Cafuné (Brazilian Portuguese): The act of tenderly running your fingers through someone’s hair.

Retrouvailles (French):  The happiness of meeting again after a long time. 

This is such a basic concept, and so familiar to the growing ranks of commuter relationships, or to a relationship of lovers, who see each other only periodically for intense bursts of pleasure. I’m surprised we don’t have any equivalent word for this subset of relationship bliss. It’s a handy one for modern life.

Ilunga (Bantu): A person who is willing to forgive abuse the first time; tolerate it the second time, but never a third time.

Apparently, in 2004, this word won the award as the world’s most difficult to translate. Although at first, I thought it did have a clear phrase equivalent in English: It’s the “three strikes and you’re out” policy. But ilunga conveys a subtler concept, because the feelings are different with each “strike.” The word elegantly conveys the progression toward intolerance, and the different shades of emotion that we feel at each stop along the way.

Ilunga captures what I’ve described as the shade of gray complexity in marriages—Not abusive marriages, but marriages that involve infidelity, for example.  We’ve got tolerance, within reason, and we’ve got gradations of tolerance, and for different reasons. And then, we have our limit. The English language to describe this state of limits and tolerance flattens out the complexity into black and white, or binary code. You put up with it, or you don’t.  You “stick it out,” or not.

La Douleur Exquise (French): The heart-wrenching pain of wanting someone you can’t have.

When I came across this word I thought of “unrequited” love. It’s not quite the same, though. “Unrequited love” describes a relationship state, but not a state of mind. Unrequited love encompasses the lover who isn’t reciprocating, as well as the lover who desires. La douleur exquisegets at the emotional heartache, specifically, of being the one whose love is unreciprocated.

 Koi No Yokan (Japanese): The sense upon first meeting a person that the two of you are going to fall into love. 

This is different than “love at first sight,” since it implies that you might have a sense of imminent love, somewhere down the road, without yet feeling it. The term captures the intimation of inevitable love in the future, rather than the instant attraction implied by love at first sight.

Ya’aburnee (Arabic): “You bury me.” It’s a declaration of one’s hope that they’ll die before another person, because of how difficult it would be to live without them.

The online dictionary that lists this word calls it “morbid and beautiful.” It’s the “How Could I Live Without You?” slickly insincere cliché of dating, polished into a more earnest, poetic term.  

Forelsket: (Norwegian):  The euphoria you experience when you’re first falling in love.

This is a wonderful term for that blissful state, when all your senses are acute for the beloved, the pins and needles thrill of the novelty. There’s a phrase in English for this, but it’s clunky. It’s “New Relationship Energy,” or NRE.

Saudade (Portuguese): The feeling of longing for someone that you love and is lost. Another linguist describes it as a “vague and constant desire for something that does not and probably cannot exist.”

It’s interesting that saudade accommodates in one word the haunting desire for a lost love, or for an imaginary, impossible, never-to-be-experienced love. Whether the object has been lost or will never exist, it feels the same to the seeker, and leaves her in the same place:  She has a desire with no future. Saudade doesn’t distinguish between a ghost, and a fantasy. Nor do our broken hearts, much of the time.

World War 1 Soldiers. This picture is available under the Creative Commons License.

North-west France is peaceful, green, cheese producing countryside, with cave-curated sausages, duck confit, locally-produced cidre, and wines.

On July 1, 1916 it became the bloodbath of the WW1 Allied attack which saw 1.2 million Allied lives lost over a nasty five year battle with flame-throwing tanks, bayonets, chlorine gas, mines, bombs, and machine guns firing 4000 rounds per minute, each containing 2000 shrapnel balls. On June 6, 1944 it became the landing ground for Allied forces for D-Day, which again saw thousands murdered in the name of freedom and democracy.

Today, the wide expanses of quiet countryside belie this horror and the thousands buried there. The quiet is eery and the expanses still too empty even more than 90 years on. Still each year, the local potato farmers collect 500,0oo kilograms of shrapnel and war remnants from their fields.

It is hard to imagine the psyche of murder that sent young men up over the trenches in their thousands. It’s harder still to imagine the psyche of men behind machine guns who had deadly aim.

In 1914, the values of the Allied countries that sent their young to war in 1914 prided themselves on the “gentlemanly” values of chivalry, and the outbreak of war allowed the best proof of this by protecting woman, king and country. While comforting to a point, come the day of duty and the barrage of gunfire, the mental leap from civilian to soldier must have been great – too great, in the cases of many post-traumatic stress sufferers.

The propaganda of the Allied countries helped to get in the right mindset for battle; brochures and posters screamed the evil of the Hun. Leaflets air-dropped into German lines simply said: “you’re surrounded – give up now!”  The effects of these on the attitude and bravery to do what was necessary and “right” must have helped.  But it’s hard to believe that it made it any easier to point your bayonet directly at a fellow 21-year-old and pull the trigger.

Whether fighting to defend, or invade, the realities of wartime remain the same: you are a soldier and you will need to kill. Or be killed.

When looking at the mentality of war, it’s a basic “fight or flight” chemical reaction:

  • Sensory nerve cells pass the perception of a threat, or stress, from the environment to the hypothalamus in the brain.
  • The hypothalamus transmits a signal to the pituitary gland resulting in the production of cortisol. Cortisol is released into the blood stream, resulting in an increase in blood pressure, increase in blood sugar levels, and suppression of the immune system.
  • Simultaneously, the hypothalamus transmits a nerve signal down the spinal cord to the adrenal glands which receive nerve and chemical signals initiated by cells in the hypothalamus.
  • Nerve signals activate the release of epinephrine or adrenaline into the bloodstream which is important in the fight or flight response and activates the lungs to breathe more deeply, heart to beat faster, and your muscle cells to react, causing beads of perspiration and raised hairs at the surface.*
So that’s how the your brain helps you override the fear of attacking and being attacked – and survive!
*Taken from ‘How Cells Communicate During The Fight or Flight Response’ http://learn.genetics.utah.edu/content/begin/cells/fight_flight/
%d bloggers like this: