mild-cognitive-impairment

Deep learning model built on neuroimaging data identifies “Brain Age Gaps” as markers of Alzheimer’s disease (AD)

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Brain Age Gap is a Com­pos­ite Bio­mark­er for Demen­tia Pathol­o­gy or Sever­i­ty (GEN):

Mayo Clin­ic sci­en­tists have devel­oped a com­pu­ta­tion­al mod­el that pre­dicts brain age using a large col­lec­tion of neu­roimag­ing data obtained using FDG-PET (flu­o­rodeoxyglu­cose positron emis­sion tomog­ra­phy) and struc­tur­al MRI (mag­net­ic res­o­nance imag­ing). The deep learn­ing-based mod­el tests the rela­tion­ship between brain age gaps in var­i­ous forms of demen­tia, includ­ing mild cog­ni­tive impair­ment (MCI), Alzheimer’s dis­ease (AD), fron­totem­po­ral demen­tia (FTD), and Lewy body demen­tia (LBD), as well as in nor­mal brains.

[Read more…] about Deep learn­ing mod­el built on neu­roimag­ing data iden­ti­fies “Brain Age Gaps” as mark­ers of Alzheimer’s dis­ease (AD)

On physical activity, neuroplasticity, depression, screen time, neuromodulation and more

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Wel­come to a new edi­tion of Sharp­Brains’ e‑newsletter, fea­tur­ing this time eight sci­en­tif­ic reports and indus­try resources plus a few fun brain teasers.

#1. Study finds ulti­mate hack to pro­tect teen brains from harm­ful screen time: Exer­cise (and good role-mod­el­ing):

“Girls who spent less than an hour on screens and boys who spent less than 90 min­utes on screens were not neg­a­tive­ly impact­ed by it. But at high­er amounts of screen time, their life sat­is­fac­tion dropped significantly—they were less hap­py with their lives, and it got worse the more time they spent … (the) study also found that teens who got more reg­u­lar exer­cise had greater life sat­is­fac­tion and few­er phys­i­cal com­plaints for both gen­ders. Not only that, the effects were large­ly unre­lat­ed to how much time a teen spent on screens, so that if teens exer­cised more, it could poten­tial­ly undo the dam­age to their well-being that went along with even six or eight hours of screen time.”

#2. Stud­ies find grow­ing evi­dence link­ing weight, phys­i­cal activ­i­ty, neu­ro­plas­tic­i­ty and depres­sion:

‘Obe­si­ty and depres­sion are both major glob­al health chal­lenges, and our study pro­vides the most robust evi­dence to date that high­er BMI caus­es depres­sion,’ said lead author Jess O’Loughlin. ‘Under­stand­ing whether phys­i­cal or social fac­tors are respon­si­ble for this rela­tion­ship can help inform effec­tive strate­gies to improve men­tal health and wellbeing.’

#3. Dr. Judith Beck on the future of cog­ni­tive ther­a­py and psy­chother­a­py:

Let’s hope! — “I think Cog­ni­tive Behav­ioral Ther­a­py (CBT) will con­tin­ue to be adapt­ed for more prob­lems, diag­noses, and con­di­tions. We will train many kinds of care­givers, teach­ers, front-line work­ers, police, and even politicians.”

#4. Ratio­nal­i­ty doesn’t equal effi­cien­cy: Cell­phone data shows how we nav­i­gate cities:

“We dis­cov­ered that the most pre­dic­tive mod­el – rep­re­sent­ing the most com­mon mode of city nav­i­ga­tion – was not the quick­est path, but instead one that tried to min­i­mize the angle between the direc­tion a per­son is mov­ing and the line from the per­son to their des­ti­na­tion … Evo­lu­tion is a sto­ry of trade-offs, not opti­miza­tions, and the cog­ni­tive load of cal­cu­lat­ing a per­fect path rather than rely­ing on the sim­pler point­ing method might not be worth a few saved min­utes. After all, ear­ly humans had to pre­serve brain pow­er for dodg­ing stam­ped­ing ele­phants, just like peo­ple today might need to focus on avoid­ing aggres­sive SUVs.”

#5. Trend: Har­ness­ing dig­i­tal tech to improve men­tal health and well­ness:

“Designed with the help of Dutch aca­d­e­m­ic Isabela Granic … the game is cen­tred around an avatar who stays in bed for the day and aims to relax play­ers by using sooth­ing music, mut­ed colours and self-care prac­tices. Think med­i­ta­tive tasks such as word games and guid­ed breath­ing exer­cis­es. There’s no way to win, com­pete or binge – in fact, it delib­er­ate­ly starts to feel bor­ing after a few min­utes of play, which dis­in­cen­tivizes mind­less scrolling. #Self­Care was an instant hit, gar­ner­ing half a mil­lion down­loads in its first six weeks with­out any advertising…”

#6. Study: Per­son­al­ized, closed-loop neu­ro­mod­u­la­tion can (one day) become a “pace­mak­er for the brain”:

“What made this proof-of-prin­ci­ple tri­al suc­cess­ful was the dis­cov­ery of a neur­al bio­mark­er – a spe­cif­ic pat­tern of brain activ­i­ty that indi­cates the onset of symp­toms – and the team’s abil­i­ty to cus­tomize a new DBS device to respond only when it rec­og­nizes that pat­tern. The device then stim­u­lates a dif­fer­ent area of the brain cir­cuit, cre­at­ing on-demand, imme­di­ate ther­a­py that is unique to both the patient’s brain and the neur­al cir­cuit caus­ing her illness.”

#7. Six guide­lines to nav­i­gate the Aduhelm con­tro­ver­sy and (hope­ful­ly) help patients with Mild Cog­ni­tive Impair­ment and ear­ly-stage Alzheimer’s Dis­ease:

“After ini­tial­ly indi­cat­ing that Aduhelm could be pre­scribed to any­one with demen­tia, the Food and Drug Admin­is­tra­tion now spec­i­fies that the pre­scrip­tion drug be giv­en to indi­vid­u­als with mild cog­ni­tive impair­ment or ear­ly-stage Alzheimer’s, the groups in which the med­ica­tion was studied.
Yet this nar­row­er rec­om­men­da­tion rais­es ques­tions. What does a diag­no­sis of mild cog­ni­tive impair­ment mean? Is Aduhelm appro­pri­ate for all peo­ple with mild cog­ni­tive impair­ment, or only some? And who should decide which patients qual­i­fy for treat­ment: demen­tia spe­cial­ists or pri­ma­ry care physicians?”

#8. The Fed­er­al Trade Com­mis­sion (FTC) hard­ens data secu­ri­ty rules for health apps and devices:

“With data breach­es on the rise, the FTC is look­ing to make health apps more account­able for telling patients when their data has been exposed.”

 

Wish­ing you and yours a sweet Hal­loween and a healthy month of November,

The Sharp­Brains Team

Six guidelines to navigate the Aduhelm controversy and (hopefully) help patients with Mild Cognitive Impairment and early-stage Alzheimer’s Disease

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The approval of a con­tro­ver­sial new drug for Alzheimer’s dis­ease, Aduhelm, is shin­ing a spot­light on mild cog­ni­tive impair­ment — prob­lems with mem­o­ry, atten­tion, lan­guage or oth­er cog­ni­tive tasks that exceed changes expect­ed with nor­mal aging.

After ini­tial­ly indi­cat­ing that Aduhelm could be pre­scribed to any­one with demen­tia, the Food and Drug Admin­is­tra­tion now spec­i­fies that the pre­scrip­tion drug be giv­en to indi­vid­u­als with mild cog­ni­tive impair­ment or ear­ly-stage Alzheimer’s, the groups in which the med­ica­tion was studied.

Yet this nar­row­er rec­om­men­da­tion rais­es ques­tions. What does a diag­no­sis of mild cog­ni­tive impair­ment mean? Is Aduhelm appro­pri­ate for all peo­ple with mild cog­ni­tive impair­ment, or only some? And who should decide which patients qual­i­fy for treat­ment: demen­tia spe­cial­ists or pri­ma­ry care physi­cians? [Read more…] about Six guide­lines to nav­i­gate the Aduhelm con­tro­ver­sy and (hope­ful­ly) help patients with Mild Cog­ni­tive Impair­ment and ear­ly-stage Alzheimer’s Disease

On cognitive reframing and biases, stress, mental health tech, Aduhelm backlash, Britney Spears, and more

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Wel­come to a new edi­tion of Sharp­Brains’ e‑newsletter, fea­tur­ing this time nine sci­en­tif­ic reports and indus­try devel­op­ments to help pro­mote life­long brain and men­tal health.

#1. To low­er stress lev­els and improve prob­lem-solv­ing, prac­tice cog­ni­tive refram­ing instead of venting

“… vent­ing like­ly doesn’t soothe anger as much as aug­ment it. That’s because encour­ag­ing peo­ple to act out their anger makes them relive it in their bod­ies, strength­en­ing the neur­al path­ways for anger and mak­ing it eas­i­er to get angry the next time around. Stud­ies on vent­ing anger (with­out effec­tive feed­back), whether online or ver­bal­ly, have also found it to be gen­er­al­ly unhelp­ful … To get out of that, you can ask the per­son to step back and help you reframe your expe­ri­ence by ask­ing, “How should I think about this dif­fer­ent­ly?” or “What should I do in this situation?”

#2. Head­space and Gin­ger merge to expand and scale up dig­i­tal men­tal health

“The new com­pa­ny would find it push­ing well beyond its cur­rent mind­ful­ness focus to, “pro­vide the full spec­trum of proven, effec­tive vir­tu­al sup­port – from mind­ful­ness and med­i­ta­tion, to text-based behav­ioral health coach­ing, to video-based ther­a­py and psy­chi­a­try – for all types of patient populations.”

Ambi­tious move!

#3. How to read, under­stand and write great med­ical research

12 good tips for stu­dents and every­one else

#4. Vet­er­ans Affairs won’t cov­er Biogen’s new “Alzheimer’s drug” giv­en con­cerns over safe­ty and lack of evidence

Their inde­pen­dent review con­cludes that “giv­en the lack of evi­dence of a robust and mean­ing­ful clin­i­cal ben­e­fit and the known safe­ty sig­nal, we rec­om­mend against offer­ing this agent to patients with Alzheimer’s demen­tia (mild or oth­er­wise) or mild cog­ni­tive impairment.”

#5. Alzheimer’s & Demen­tia researchers chal­lenge FDA’s approval of Aduhelm giv­en lack of evi­dence for beta-amy­loid as a marker

A strong call to “learn how this reg­u­la­to­ry fail­ure occurred and to ensure that it doesn’t occur again”

#6. Debunk­ing four myths about deci­sion-mak­ing capac­i­ty to keep Brit­ney Spears and oth­ers safe

Address­ing the ongo­ing con­tro­ver­sy about con­ser­va­tor­ships, a USC Pro­fes­sor of Law, Psy­chol­o­gy, and Psy­chi­a­try shares a great arti­cle to debunk these all-too-com­mon myths

#7. Study exam­ines com­mon cog­ni­tive bias­es (have you tried this brain teas­er?) and ways to mit­i­gate them

If you have not encoun­tered the “Lin­da brain teas­er” before, please give it a try! If you have, you’ll enjoy the new paper titled Tver­sky and Kahneman’s Cog­ni­tive Illu­sions: Who Can Solve Them, and Why?

#8. Inte­grat­ing music, move­ment and stroke reha­bil­i­ta­tion, MedRhythms rais­es $25M to devel­op and com­mer­cial­ize dig­i­tal therapeutic

Fas­ci­nat­ing approach to gait training.

#9. Neu­rotech start-up Paradromics rais­es $20M to address brain-relat­ed dis­or­ders via next-gen brain-com­put­er interfaces

Neu­ralink vs. Paradromics vs. non-inva­sive plat­forms — quite a stim­u­lat­ing space to track

 

Wish­ing you and yours a hap­py and healthy back-to-school and month of September,

The Sharp­Brains Team

Veterans Affairs won’t cover Biogen’s new “Alzheimer’s drug” given concerns over safety and lack of evidence

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VA Health Sys­tem Won’t Cov­er Biogen’s Alzheimer’s Drug (The Wall Street Journal):

The Depart­ment of Vet­er­ans Affairs won’t cov­er Bio­gen Inc.’s new Alzheimer’s drug, the lat­est rebuke of the con­tro­ver­sial treat­ment since it was approved ear­li­er this summer.

The VA decid­ed not add the drug, called Aduhelm, to its for­mu­la­ry list of avail­able med­i­cines because of the drug’s risk of caus­ing seri­ous side effects and a lack of evi­dence that it improves cog­ni­tive func­tion, an agency spokes­woman said. [Read more…] about Vet­er­ans Affairs won’t cov­er Biogen’s new “Alzheimer’s drug” giv­en con­cerns over safe­ty and lack of evidence

The new frontier in neurocognitive monitoring and dementia screening: the Apple Watch

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Bio­gen to Launch Pio­neer­ing Study to Devel­op Dig­i­tal Bio­mark­ers of Cog­ni­tive Health Using Apple Watch and iPhone (press release):

Bio­gen Inc. (Nas­daq: BIIB) today announced a new vir­tu­al research study, in col­lab­o­ra­tion with Apple, to inves­ti­gate the role Apple Watch and iPhone could play in mon­i­tor­ing cog­ni­tive per­for­mance and screen­ing for decline in cog­ni­tive health includ­ing mild cog­ni­tive impair­ment (MCI). [Read more…] about The new fron­tier in neu­rocog­ni­tive mon­i­tor­ing and demen­tia screen­ing: the Apple Watch