brain

Study: Building muscle mass helps delay cognitive decline beyond the value of exercise itself

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A new rea­son to build mus­cle: brain health (The Globe and Mail):

… a recent study from researchers at McGill Uni­ver­si­ty, pub­lished in the jour­nal JAMA Net­work Open, offers a new rea­son for con­tin­u­ing to work on build­ing mus­cle: It’s good for your brain, not just your biceps. Greater mus­cle mass, the results sug­gest, helps ward off cog­ni­tive decline in old­er adults beyond what you’d expect based on their exer­cise lev­els alone. [Read more…] about Study: Build­ing mus­cle mass helps delay cog­ni­tive decline beyond the val­ue of exer­cise itself

Q&A with researcher Robb Rutledge on mental health, expectations, decision-making and, yes, holiday planning!

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Have you ever looked for­ward to a con­cert, beach vaca­tion, or par­ty only to find your­self not enjoy­ing it as much as you thought you would?

You may be suf­fer­ing from over­ly high expec­ta­tions, says psy­chol­o­gist Robb Rut­ledge of Yale Uni­ver­si­ty. Rut­ledge and his col­leagues have been using smart­phone-based data col­lec­tion (via a free app called Hap­pi­ness Quest, where any­one can play short games and con­tribute to research) to see how our expec­ta­tions affect our future hap­pi­ness. Some of their find­ings point to nov­el approach­es for increas­ing our enjoy­ment of every­day life. [Read more…] about Q&A with researcher Robb Rut­ledge on men­tal health, expec­ta­tions, deci­sion-mak­ing and, yes, hol­i­day planning!

Dual decline in gait speed and memory function seen as most predictive of future dementia

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Walk­ing Speed Helps Pre­dict Future Demen­tia (Med­Page Today):

Dual decline in gait speed and cog­ni­tion car­ried a high­er risk of demen­tia than either gait-only decline or cog­ni­tive-only decline, report­ed Taya Col­ly­er, PhD, of Monash Uni­ver­si­ty in Vic­to­ria, Aus­tralia, and co-authors, in JAMA Net­work Open…

[Read more…] about Dual decline in gait speed and mem­o­ry func­tion seen as most pre­dic­tive of future dementia

How ’sleeping on it’ can help the prefrontal cortex regulate emotional responses, making us feel better in the morning

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Instead of lying awake wor­ry­ing, we’re often told to “sleep on it” when mak­ing deci­sions both big and small. And there’s actu­al­ly a sci­en­tif­ic basis for this advice. Sleep can influ­ence our response to emo­tion­al sit­u­a­tions, and helps us to man­age our men­tal health.

To under­stand why sleep and emo­tions are so con­nect­ed, it’s impor­tant to first under­stand what hap­pens in the brain when we encounter some­thing emo­tive. [Read more…] about How ’sleep­ing on it’ can help the pre­frontal cor­tex reg­u­late emo­tion­al respons­es, mak­ing us feel bet­ter in the morning

The Do’s and Don’ts of Harnessing Technology (and Anxiety) for Good

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Wel­come to a new edi­tion of Sharp­Brains’ e‑newsletter, fea­tur­ing impor­tant brain & men­tal health news plus a few fun brain teasers to test your rea­son­ing skills and more…

#1. Chal­lenge ahead: Har­ness­ing tech­nol­o­gy for good men­tal health

“Tech­nol­o­gy can not only help us grow out of unhealthy habits, it is also pos­si­ble to expand human men­tal capac­i­ties … although it will be nec­es­sary to ana­lyze “the how and when” of these uses: they must be eth­i­cal­ly sound and ensure that results are ben­e­fi­cial to soci­ety.” — our very own Álvaro Fer­nán­dez, hop­ing you all agree 🙂

If you pre­fer to read the arti­cle in Span­ish: Cómo hac­er de la tec­nología un ali­a­do en el cuida­do de la salud mental

#2. On neu­ro­plas­tic­i­ty, young brains, and smartphones

“As with any tool, behav­ior, activ­i­ty, or tech­nol­o­gy, smart phones have the poten­tial to be either a use­ful and high­ly con­struc­tive asset or a destruc­tive and harm­ful diver­sion from life … What is the impact on brain devel­op­ment dur­ing the first 25 years of life when a sig­nif­i­cant part of each day is spent look­ing into a smart phone and the result­ing cog­ni­tive and emo­tion­al experiences?”

#3. Explor­ing links between hear­ing loss, demen­tia and the ‘cog­ni­tive reserve’ — plus the role of hear­ing aids

“Cer­tain types of demen­tia, par­tic­u­lar­ly vas­cu­lar demen­tia, are caused when there is less blood flow reach­ing the brain. This can dam­age our brain cells. Recent stud­ies have also shown that the parts of our brain that process sounds (our audi­to­ry sys­tem) have many blood ves­sels and are vul­ner­a­ble to dam­age … Anoth­er area of research is look­ing at whether hear­ing loss indi­rect­ly affects demen­tia risk by mak­ing it hard­er for peo­ple to stay con­nect­ed. Social iso­la­tion is anoth­er known risk fac­tor for dementia.”

#4. Com­put­er-assist­ed cog­ni­tive behav­ior ther­a­py (CCBT) may out­per­form Treat­ment as Usu­al (TAU) in help­ing patients reduce depres­sion, improve 6‑month remis­sion rates

“The find­ings of this ran­dom­ized clin­i­cal tri­al sug­gest that CCBT with a mod­est amount of clin­i­cian sup­port has poten­tial for wider-spread imple­men­ta­tion as an effec­tive, accept­able, and effi­cient treat­ment for depres­sion in pri­ma­ry care.”

#6. Wear­able EEG mon­i­tor­ing start-up Epi­tel rais­es $12.5M to mar­ket seizure detec­tion system

“It is time that EEGs for the brain become as acces­si­ble as EKGs for the heart to patients through­out the coun­try. For too long essen­tial neu­ro­log­i­cal ser­vices have been inac­ces­si­ble to large parts of our pop­u­la­tion” — Dr. Chaud­ery, Prin­ci­pal at Genoa Ven­tures (co-lead investor)

#7. Otsu­ka and Vir­tu­al Real­i­ty start-up Jol­ly Good sign $43M deal to pro­mote Social Skills Train­ing (SST) ther­a­pies, help­ing schiz­o­phre­nia patients first

“The com­bi­na­tion of SST and a phar­ma­ceu­ti­cal reg­i­men has been proven in stud­ies to reduce the recur­rence of men­tal dis­or­ders, the com­pa­nies said. Their first joint­ly devel­oped pro­gram will be direct­ed toward schiz­o­phre­nia patients, and they’re pre­dict­ing that the immer­sive nature of Jol­ly Good’s VR will make the SST ther­a­py more engag­ing and effec­tive than stan­dard methods.”

#8. Q&A with Dr. Wendy Suzu­ki on the parasym­pa­thet­ic ner­vous sys­tem and har­ness­ing anx­i­ety for good

“Most peo­ple have all heard of the fight-or-flight system—that’s the stress sys­tem, it makes your heart rate go up and you can run away real­ly fast. Well, peo­ple don’t real­ize that through evo­lu­tion in par­al­lel with the fight-or-flight sys­tem evolved an equal and oppo­site part of our ner­vous sys­tem that’s nick­named the “rest-and-digest” part of the ner­vous sys­tem, or parasym­pa­thet­ic ner­vous sys­tem. It’s basi­cal­ly the de-stress­ing part of our ner­vous sys­tem. That is what we need to acti­vate to bring our­selves back to equi­lib­ri­um when we’re in a stress­ful state.”

 

Final­ly, as promised, a few fun brain teasers to test your rea­son­ing skills–and more. Enjoy!

#9. Test your mem­o­ry and rea­son­ing skills with these proverbs

#10. Brain teas­er: Will you fin­ish your the­sis on time?

#11. Did you notice the jump? Good rea­son­ing and prob­lem-solv­ing often requires prop­er atten­tion to detail…

 

Wish­ing you and yours a healthy and safe March,

The Sharp­Brains Team

On brain folding and fitting 86 billion neurons inside our 1400 cc crania

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Brain fold­ing typ­i­cal­ly begins at the end of the. sec­ond trimester of preg­nan­cy and con­tin­ues after birth. Hiroshi Watanabe/DigitalVision via Get­ty Images

The human brain has been called the most com­plex object in the known uni­verse. And with good rea­son: It has around 86 bil­lion neu­rons and sev­er­al hun­dred thou­sand miles of axon fibers con­nect­ing them.

Unsur­pris­ing­ly, the process of brain fold­ing that results in the brain’s char­ac­ter­is­tic bumps and grooves is also high­ly com­plex. Despite decades of spec­u­la­tion and research, the under­ly­ing mech­a­nism behind this process remains poor­ly under­stood. As bio­me­chan­ics and com­put­er sci­ence researchers, we have spent sev­er­al years study­ing the mechan­ics of brain fold­ing and ways to visu­al­ize and map the brain, respec­tive­ly. [Read more…] about On brain fold­ing and fit­ting 86 bil­lion neu­rons inside our 1400 cc crania