(Editor’s note: below you have the final part of the 6-part Stress and the Brain series. If you are join­ing the series now, you can read the pre­vi­ous parts via the links below.)

Stayin’ Alive

TO FIGHT, FLEE, OR FREEZE — THAT IS THE QUESTION

With a bet­ter under­stand­ing of the neu­ro­bi­ol­ogy of stress, the LD — ADHD — stress con­nec­tion becomes clear.  Stu­dents with learn­ing dis­abil­i­ties or ADHD, con­fronted with the stress cre­ated by expo­sure to tasks that are in real­ity or in their per­cep­tion too dif­fi­cult (and thus threat­en­ing), exhibit the pro­tec­tive behav­ior of any organ­ism under extreme stress:  They fight, they flee, or they freeze. When these kids don’t under­stand why they can’t do what other kids can do (mas­ter the stres­sor), and they can’t see any way to get out of a sit­u­a­tion that won’t go away, they begin to shut down. Read the rest of this entry »

(Editor’s note: below you have part 5 of the 6-part The Neu­ro­bi­ol­ogy of Stress series. If you are join­ing the series now, you can read the pre­vi­ous part Here.)

Stayin’ Alive

The Human Brain Likes to Be in Balance

For­tu­nately, the brain has some built — in safety sys­tems. Too much cor­ti­sol in the blood sig­nals the brain and adrenal glands to decrease cor­ti­sol pro­duc­tion. And under nor­mal con­di­tions, when the stress is over­come or brought under con­trol (by fight­ing, flee­ing, or turn­ing into an immo­bile statue, or by mas­ter­ing the threat), the hypo­thal­a­mus starts send­ing out the orders to stand down. Stop pro­duc­ing cor­ti­sol!  Event over!  Under con­tin­u­ous stress, how­ever, this feed­back sys­tem breaks down. The hypo­thal­a­mus keeps read­ing the stress as a threat, furtively send­ing mes­sages to the pitu­itary gland, which screams out to the adrenal glands to keep pump­ing out cor­ti­sol, which at this point begins to be neu­ro­toxic — poi­son to the brain. Read the rest of this entry »

(Editor’s note: below you have part 4 of the 6-part The Neu­ro­bi­ol­ogy of Stress series. If you are join­ing the series now, you can read the pre­vi­ous part Here.)

Stayin’  Alive

THE STRESS RESPONSE EXPLAINED

Stress was put on the map, so to speak, by a Hun­gar­ian — born Cana­dian endocri­nol­o­gist named Hans Hugo Bruno Selye (ZEL — yeh) in 1950, when he pre­sented his research on rats at the annual con­ven­tion of the Amer­i­can Psy­cho­log­i­cal Asso­ci­a­tion. To explain the impact of stress, Selye pro­posed some­thing he called the Gen­eral Adap­ta­tion Syn­drome (GAS), which he said had three com­po­nents. Accord­ing to Selye, when an organ­ism expe­ri­ences some novel or threat­en­ing stim­u­lus it responds with an alarm reac­tion. This is fol­lowed by what Selye referred to as the recov­ery or resis­tance stage, a period of time dur­ing which the brain repairs itself and stores the energy it will need to deal with the next stress­ful event.

Read the rest of this entry »

Below you can find the full tran­script of our engag­ing Q&A ses­sion today on mem­ory, mem­ory tech­niques and brain-healthy lifestyles with Dr. Gary  Small, Direc­tor of UCLA’s Mem­ory Clinic and Cen­ter on Aging, and author of The Mem­ory Bible. You can learn more about his book  Here, and learn more about upcom­ing Brain Fit­ness Q&A Ses­sions Here.

Per­haps one of the best ques­tions and answers was:

2:55
Ques­tion: Gary, you’ve worked many years in this field. Let us in on the secret. What do YOU do you, per­son­ally, to pro­mote your own brain fit­ness?
2:57
Answer: I try to get at least 30 min­utes of aer­o­bic con­di­tion­ing each day; try to min­i­mize my stress by stay­ing con­nected with fam­ily and friends; gen­er­ally eat a brain healthy diet (fish, fruits, veg­eta­bles), and try to bal­ance my online time with my offline time. Which reminds me, I think it is almost time for me to sign off line. Read the rest of this entry »

(Editor’s note: below you have part 3 of the 6-part The Neu­ro­bi­ol­ogy of Stress series. If you are join­ing the series now, you can read the pre­vi­ous part Here.)

Stayin’ Alive

Under­stand­ing the Human Brain and How It Responds to Stress

The Lit­tle Brain Down Under

The tour con­tin­ues … Sit­ting under the occip­i­tal and tem­po­ral lobes of the brain is the cere­bel­lum. It’s about the size of a child’s fist. Because it looks like a sep­a­rate brain­like struc­ture attached to the under­side of the cor­tex, the cere­bel­lum is some­times referred to as the “ lit­tle brain. ” It’s con­nected to the brain stem, which in turn con­nects the brain to the spinal cord. The cere­bel­lum used to be rel­e­gated to the very sim­ple role of help­ing us main­tain bal­ance when we walk or run, but mod­ern neu­ro­science has found that the cere­bel­lum plays a much larger and more impor­tant role than that. Read the rest of this entry »

(Editor’s note:  below you have part 2 of the 6-part The Neu­ro­bi­ol­ogy of Stress series. If you are join­ing the series now, you can read the pre­vi­ous part Here.)

Stayin’ Alive

Gray Mat­ters

The term gray mat­ter usu­ally evokes an image of the cor­tex, because that ’ s the part most vis­i­ble in pic­tures of the brain.  In fact, gray mat­ter makes up not only the cere­bral cor­tex but also the cen­tral por­tion of the spinal cord and areas called the cere­bel­lar cor­tex and the hip­pocam­pal cor­tex.  This dense tis­sue is packed full of neu­ronal cells, their den­drites (branch­ing, root — like end­ings), axon ter­mi­nals (the other end), and those sticky glial cells I men­tioned ear­lier. The cor­tex is the area of the brain where the actual pro­cess­ing of infor­ma­tion takes place.  Because of its rel­a­tive size and com­plex­ity, it ’ s easy to under­stand why it plays a key role in mem­ory, atten­tion, per­cep­tual aware­ness, thought, lan­guage, and consciousness.

Read the rest of this entry »

(Editor’s note: We are pleased to bring to Sharp­Brains read­ers a new 6-part series on the Neu­ro­bi­ol­ogy of Stress, excerpted from the recent book Nowhere to Hide: Why Kids with ADHD and LD Hate School and What We Can Do About It, by Sharp­Brains con­trib­u­tor Dr. Jerome Schultz.)

Stayin ’ Alive

Worry is like a rock­ing chair. It gives you some­thing to do, but it gets you nowhere.
— Erma Bombeck

The brain is the con­trol cen­ter for all of our thoughts, actions, atti­tudes, and emo­tions. It ’ s the pilot­house on the river­boat of our lives. It’s Mis­sion Con­trol for all of our fl ights into space or time. It ’ s the air traffic con­troller that helps us nav­i­gate and reroute our paths based on incom­ing and out­go­ing infor­ma­tion and how we’re feel­ing about it at the time. It’s the John Williams of our per­sonal sym­phony. It ’ s the Mother Ship to our Starfleet; it’s . . . (Uh, sorry, I got car­ried away there, but I think you get my point!) Read the rest of this entry »

Train­ing the brain is pos­si­ble because of neu­ro­plas­tic­ity. Our daily expe­ri­ences can trig­ger neu­ro­plas­tic changes in the brain, such as the growth of new brain cells (neu­rons) and new con­nec­tions (synapses) between neu­rons. Plas­tic­ity is observed at all ages but is at its peak dur­ing brain devel­op­ment, as a baby and then a child learns basic knowl­edge and skills nec­es­sary to sur­vive. We should thus expect that the brain of a baby could be eas­ily trained. This is what Wass and his col­leagues recently demon­strated in a new study with 11-month-old babies. Read the rest of this entry »

Wel­come to the 70th edi­tion of Encephalon, the blog car­ni­val that offers some of the best neu­ro­science and psy­chol­ogy blog posts every other week.

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Mys­ter­ies of Brain and Mind

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On Neu­rons, Jour­neys, and Chem­i­cal Friends

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On Brain Functions

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Fron­tiers in Perception

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Next edi­tion will be hosted by Neu­roan­thro­pol­ogy on Mon­day, May 25th. If you can’t wait until to read more, you may be inter­ested in the new in-depth fea­ture, Cog­ni­tive Monthly, offered by Cog­ni­tive Daily blog for $2/ month. This month’s issue, “The Illu­sion of The­ater,” dis­cusses the “remark­able sci­ence behind what the­atri­cal pro­fes­sion­als seem, to laypeo­ple, to do intu­itively: cre­ate an envi­ron­ment that encour­ages us to believe that what we see on stage is a true rep­re­sen­ta­tion of reality.”

We offered some Brain Fit­ness Pre­dic­tions in our Mar­ket Report , including…

“7. Doc­tors and phar­ma­cists will help patients nav­i­gate through the over­whelm­ing range of avail­able prod­ucts and inter­pret the results of cog­ni­tive assess­ments. This will require sig­nif­i­cant pro­fes­sional devel­op­ment efforts, given that most doc­tors today were trained under a very dif­fer­ent under­stand­ing of the brain than the one we have today.”

The Amer­i­can Med­ical News, a weekly news­pa­per for physi­cians pub­lished by the Amer­i­can Med­ical Asso­ci­a­tion, just pub­lished an excel­lent arti­cle along those lines:

Steps to a nim­ble mind: Phys­i­cal and men­tal exer­cise help keep the brain fit
– Neu­ro­science is uncov­er­ing tech­niques to pre­vent cog­ni­tive decline.

A few quotes:

- It’s an exam­ple that high­lights a wave of new think­ing about the impor­tance of brain fitness.

- Until recently, con­ven­tional wis­dom held that our brains were intractable, hard-wired com­put­ers. What we were born with was all we got. Age wore down mem­ory and the abil­ity to under­stand, and few inter­ven­tions could reverse this process. But increas­ingly, evi­dence sug­gests that phys­i­cal and men­tal exer­cise can alter spe­cific brain regions, mak­ing rad­i­cal improve­ments in cog­ni­tive function.

- With nearly 72 mil­lion Amer­i­cans turn­ing 65 over the next two decades, physi­cians need the tools to han­dle grow­ing patient con­cerns about how to best main­tain brain health. Armed with this new brand of sci­ence, front­line physi­cians will be bet­ter equipped to address the needs of aging baby boomers, already in the throes of the brain fit­ness revolution.

- “Encour­age them to exer­cise the brain in novel and com­plex ways,” he says.

Full arti­cle: here

One of the physi­cians quoted in the arti­cle is Gary J. Kennedy, MD, Direc­tor of the Divi­sion of Geri­atric Psy­chi­a­try at Mon­te­fiore Med­ical Cen­ter in NYC and a pro­fes­sor in the Dept. of Psy­chi­a­try and Behav­ioral Sci­ences at Albert Ein­stein Col­lege of Medicine.

To put the AMA arti­cle in bet­ter per­spec­tive for Sharp­Brains read­ers, we asked Dr. Kennedy a few follow-up ques­tions. Below you have his questions.

Alvaro Fer­nan­dez (AF): Can you sum­ma­rize how cog­ni­tive func­tions tend to evolve as we age?

Gary Kennedy (GK): As we age cog­ni­tive func­tions that rely on Read the rest of this entry »