Tuesday, February 5, 2019

Brain Science

Hebbs Law
Hebb's rule is a postulate proposed by Donald Hebb in 1949 [1]. It is a learning rule that describes how the neuronal activities influence the connection between neurons, i.e., the synaptic plasticity. It provides an algorithm to update weight of neuronal connection within neural network.    web.mit.edu/mcraegroup/.../Appendix%20D_Artificial%20Neural%20Network.pdf

High quality experiences creates a high quality structure (brain).  


Gotgay, Giedd et al, 2004 Brain maturing until late 20's, the last area to develop is the pre-frontal lobe.
C. A. Nelson 2000, neural are wired in a bottom up sequence, y axis is # of circuts.


Hart and Risley 1995, disparities in early vocabulary growth

If you don't have critical social interactions prior to the age of 5, then 


at 4years of age we always focus on the face, it is not taught it is instinctual.
Attention is an executive function ( the brains ability to function through complex social interactions, analogy air traffic control , and is based on cognitive, social and emotional competencies (working memory, delayed gratification/impulse control, cognitive flexibility, self-regulation, attention, planning and organization, perseverance, reasoning and evaluation, problem solving)

EF skill sets predicts 3 major outcomes:
  1.  Academic success (based on graduation)
  2.  Employee success    
  3.  Parenting success   
Neurotransmitters can help to develop the circuits and if supported with EF activities to help the neuroplasticity.  

Soft skills, ability to get along with peers and teachers, and the ability to complete assignments.  Stress impacts EF.


Cellular blockers that prevent certain neurological genes to be expressed.  The lower care mother rats had this on the cortisol gene that is produced in stressful situations, to deal with the stress.  


Once the individuals no longer experienced famine they experienced several types of eating disorders.

Serotonin 

Teenage Paradox, should be the healthiest times in our lives, while mortality increases by 200%.  Driven by 1 behaviour, which is risk taking behaviour.  


Casey and Jones 2010 dissociation between circuits for impulsivity

Evolutionary biologists think that risk takers may have had greater success at reproducing if they were 




Early exposure to addictive substances more likely increases in the adult life.


https://www.safelaunch.org/links/the-science-of-addiction/

Phones limit social interactions, but the content is a significant factor in the negative outcomes of digital use.  

Positive Stress:  provide learners with this to help build coping strategies to deal with the stress.
Tolerable Stress:  serious activation of stress but buffered with supportive adult relationships.
Toxic stress: prolonged activation of stress without adequate adult support.


early toxic stress response system affects behaviour and health catecholamines glucocorticoids



The first step is to release  
catecholamines  followed by the glucocorticoids.  Over time the damage accumulates causing chronic disorders, diabetes, cardiac failure.  Cortisol affects the pre-frontal cortex.  When developing the cortisol prevents the circuit that relies on EF to take over.  







barth et al 2008 adversity impairs development in first 3 years

Adult needs to verbally explain their emotion to help them interpret the physical emotional expression.












ACE Quiz

Resiliency 
The amount and effort to make the changes increases over time.  

The Brain Architecture Game

Certify yourself



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