Reminder: Join Live Q&A with Dr. Paul Nuss­baum by click­ing HERE, today Novem­ber 22nd at 11am Pacific Time/ 2pm East­ern Time. Chat about about a holis­tic approach to brain health with clin­i­cal neu­ropsy­chol­o­gist Dr. Paul Nuss­baum, author of Save Your Brain, recently named a Best Book on Brain Fit­ness by AARP. You can also learn more about the Brain Fit­ness Q&A Series.

Tran­scripts of pre­vi­ous Q&A Sessions:

• Dr. Gary Small on Enhanc­ing Mem­ory and the Brain
• Alvaro Fer­nan­dez on “Men­tal Cap­i­tal­ism” and Cog­ni­tive Fitness

(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 »

Fun arti­cle by Daniel Kah­ne­man based on his new book,Think­ing, Fast and Slow.

How cog­ni­tive illu­sions blind us to rea­son (The Guardian):

Why do Wall Street traders have such faith in their pow­ers of pre­dic­tion, when their suc­cess is largely down to chance? Daniel Kah­ne­man explains.

- “Look­ing back, the most strik­ing part of the story is that our knowl­edge of the gen­eral rule that we could not pre­dict had no effect on our con­fi­dence in indi­vid­ual cases. We were reluc­tant to infer the par­tic­u­lar from the gen­eral. Sub­jec­tive con­fi­dence in a judg­ment is not a rea­soned eval­u­a­tion of the prob­a­bil­ity that this judg­ment is cor­rect. Con­fi­dence is a feel­ing, which reflects the coher­ence of the infor­ma­tion and the cog­ni­tive ease of pro­cess­ing it. It is wise to take admis­sions of uncer­tainty seri­ously, but dec­la­ra­tions of high con­fi­dence mainly tell you that an indi­vid­ual has con­structed a coher­ent story in his mind, not nec­es­sar­ily that the story is true.” …

- “The sub­jec­tive expe­ri­ence of traders is that they are mak­ing sen­si­ble edu­cated guesses in a sit­u­a­tion of great uncer­tainty. In highly effi­cient mar­kets, how­ever, edu­cated guesses are no more accu­rate than blind guesses.”

Related arti­cles:

• Clas­sic inat­ten­tional blind­ness test
• Brain Teaser: Con­sider Linda
• Your Trad­ing Brain: Expert or Novice

(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 »

Very inter­est­ing new study pub­lished in Psy­cho­log­i­cal Sci­ence: Short-Term Music Train­ing Enhances Ver­bal Intel­li­gence and Exec­u­tive Func­tion.

Abstract: Researchers have designed train­ing meth­ods that can be used to improve men­tal health and to test the effi­cacy of edu­ca­tion pro­grams. How­ever, few stud­ies have demon­strated broad trans­fer from such train­ing to per­for­mance on untrained cog­ni­tive activ­i­ties. Here we report the effects of two inter­ac­tive com­put­er­ized train­ing pro­grams devel­oped for preschool chil­dren: one for music and one for visual art. After only 20 days of train­ing, Read the rest of this entry »

(Editor’s Note: this timely new report illus­trates the need for inno­v­a­tive brain fit­ness inter­ven­tions focused on main­tain­ing if not enhanc­ing tar­geted cog­ni­tive func­tion­al­ity, such as dri­ving safety or finan­cial decision-making, lever­ag­ing life­long neu­ro­plas­tic­ity and cog­ni­tive reserve. What the report presents as inex­orable, some­what genet­i­cally pre-programmed decline, it is not.)

BMO Retire­ment Insti­tute Report: Boomers’ Abil­ity to Make Finan­cial Deci­sions Often Declines With Age (Mar­ket Watch):

- “The BMO Retire­ment Insti­tute released a report today which raises aware­ness of the poten­tial impact on aging Cana­di­ans of declin­ing cog­ni­tive abil­i­ties — often caused by Alzheimer’s dis­ease and other forms of demen­tia — and describes how this decline can affect their abil­ity to make finan­cial deci­sions.” Read the rest of this entry »