Hsv 6350 Module I Part 1 Neurobiology Of Trauma Dr. Mark Sloane - Presentation Transcript
The Impact of Child Trauma & Prenatal Alcohol Exposure on Neurobiological Development & Function Western Michigan University College of Health & Human Services HSV 6350-105 Special Topics Course: Child Trauma Module I , Part I Mark A. Sloane, DO Center for Behavioral Pediatrics WMU Children’s Trauma Assessment Center Kalamazoo, MI
Western Michigan University
Western Michigan University SW MI Children’s Trauma Assessment Center
Module 2
Brief review of normal brain development
Review of “Brain-Behavior Connections” in FASD & child traumatic stress
Neurodevelopmental Function in FASD & child traumatic stress
Treatment overview in FASD & child traumatic stress
The Harsh Reality…
Research continually demonstrates the harmful effects of child traumatic stress & prenatal alcohol exposure
We have a reactive system rather than a proactive system
We minimize the impact to these children to protect ourselves from the overwhelming awareness of how damaging their experiences are
Exploring the “Why” Behind Problematic Behavior
Requires a reframing of often long-standing paradigms re the etiology of “bad behavior”
Multiple factors: This is complex !!!
Requires a community-wide shift of thinking differently
The power of the trans-disciplinary mindset
Paradigm Shift: Reframing Our Understanding of Behavior
“ Bad” behavior in children & adolescents is often about faulty & defective brain wiring
It is not disrespect because the child is “ BAD ”
Perceived “bad” children:
Do NOT have adequate skills of flexibility/adaptability…
Often have low frustration tolerance…
and also have significant difficulty applying these skills when they are most needed. (Greene, 2001)
Our typical response to “bad” behavior in children
These kids get all kinds of labels
Educational System (special education classifications)
Medical System (DSM-IV diagnostic categories)
Legal System (at-risk teen, juvenile delinquent)
They often get labels that imply they are BAD or NAUGHTY
ADHD, Oppositional Defiant Disorder (ODD), Conduct Disorder, Bipolar Disorder (& even PTSD) diagnoses do NOT capture the full extent of the neurodevelopmental & neurobehavioral impact for kids with problem behaviors
These labels just don’t fit!!!
The challenge of dealing with difficult children…
“It may be when we no longer know what to do…
we come to our real work …
And…when we no longer know which way to go…
we have begun our real journey .”
Wendell Berry
News Flash : We live in strange times!
Modern Western society has benefited (beyond the dreams of our ancestors) from many advances in:
Technology
Communications
Transportation
Social Justice
Economy
… however….
News Flash: We live in strange times!
Our society seems incapable of ensuring that our children grow up in environments that are:
Safe
Predictable
Rich in positive relationships
Humane
News Flash: We live in strange times!
Hundreds of thousands of children are terrorized, abused, neglected, maltreated, exposed to alcohol/drugs each year
These kids are at great risk for emotional, behavioral, social, cognitive, and physical health problems
The overall costs are incalculable
How can we really measure the lost potential here?
News Flash: We live in strange times!
How “advanced” is our society when…
We have to create vast expensive government agencies whose sole purpose is to protect children from their parents!
These very agencies (despite our best efforts) truly fail these unfortunate children by…
Recreating the chaos, fragmentation, trauma, and neglect these kids experienced in their biological homes
A Step Closer… to understanding these kids
The Brain – Behavior Connection
Normal Brain Development and Organization
Brain Glossary
Neuron (nerve cell)
“Raw material” of the brain
100 billion neurons at birth (most of what we will need throughout life)
Synapse
The connection between neurons
1,000 trillion synapses by age 3
500 trillion synapses by adolescence
Due to “pruning” (discarding)
Brain Development / Learning
The process of creating, strengthening, & discarding synapses
Synapses organize the brain by forming neuronal pathways that connect the parts of the brain governing everything we do:
Breathing
Sleeping
Thinking
Feeling
Neurobiology of Development
Nature PLUS nurture !!!
“ Hard-wired” genetic programs (blueprints) are continuously modified by the environment (from conception death)
Brain “sculpts” itself in response to the environment AT THE SAME TIME it is developing (via genetic blueprints)
“ These interactions organize our brain’s development and thus shape the person we become” (Shore 1997)
From simple to complex: Hierarchy of brain function Brain- stem Diencephalon Limbic Neocortex Abstract Thought Concrete Thought Affiliation w/ mate Attachment Sexual Behavior Emotional Reactivity Motor Regulation Arousal Appetite / Satiety Sleep BP / Heart Rate Respiratory Drive Body Temperature Perry 2006 All sensory input enters here
Neural systems change in a use-dependent fashion during development
Healthy organization of all neural networks depends upon:
Pattern
Frequency
Timing
of key experiences during development
Example : Child must be exposed to language-rich environment to develop optimal language function
Brain develops in sequential fashion: from simple to complex Brain- stem Diencephalon Limbic Neocortex Development begins here
The brain develops most rapidly early in life
By age 4, the brain is 90% of adult size!
It is much easier to organize the brain in healthy ways in early childhood…
It is much more difficult to re-organize a poorly organized brain due to traumatic stress and / or FASD
Neural systems can be changed… but some systems are easier to change Brain- stem Diencephalon Limbic Neocortex Complexity Plasticity & Ease of change
The Brain-Behavior connection: three primary components
Genetics
What you inherit from both parents
Intrauterine environment
During pregnancy
Extrauterine environment
After pregnancy
The Brain-Behavior Connection
Genetics
Neurodevelopmental strengths / weaknesses
Temperament / Personality
Family history of:
Attentional disorders
Learning disorders
Mood disorders
Neuropsychiatric disorders
The Brain-Behavior Connection (cont.)
Intrauterine environment
Exposure to drugs (legal / illegal)
Exposure to alcohol
Maternal stress
Maternal nutrition
The Brain-Behavior Connection (cont.)
Extrauterine environment
Parental attachment / nurturing
Parental style / psychopathology
Overall family climate
Influence of extended family system
Inadequate nutrition
Exposure to violence, natural disasters
Exposure to neglect
Exposure to abuse (verbal / emotional / physical / sexual)
Effects of Traumatic Stress on “Normal” Individuals Normal Gene Normal Behavior normal development Normal Circuit Normal Gene normal development Normal Circuit T R A U M A Normal Behavior Neurodevelopmental Delays Neurobehavioral Symptoms Stahl 2002
Effects of Prenatal Alcohol Exposure on “Normal” Individuals Normal Gene Normal Behavior normal development Normal Circuit Normal Gene abnormal development Compromised Circuit Normal Behavior Neurodevelopmental Delays Neurobehavioral Symptoms P A R L E C N O A H T O A L L
Worst-case scenario: The “Triple-Whammy” Vulnerable Gene +MH Family History Development Compromised Circuit Most severe: Neurobehavioral Symptoms Neurodevelopmental Delays P A R L E C N O A H T O A L L Abnormal T R A U M A Normal Behavior
Influence of Prenatal Alcohol Exposure
Fetal Alcohol Syndrome
FAS is among the most common of the known causes of cognitive impairment
A major public health problem.
How common is it? (1-3/1000 live births in US?)
Regional variations
How does it affect the CNS?
What can we do about it?
Why don’t more professionals know about it?
Fetal Alcohol Syndrome
“ Discovered” in 1968 & 1973
Specific pattern of facial features
Evidence of Central Nervous System (CNS) dysfunction / damage
Research reveals a strong link between all types of child abuse and the subsequent development of psychiatric illness in adulthood
Until recently, many/most MH professionals felt that these psychiatric conditions developed via psychological means:
“software” problems amenable to reprogramming (talk therapy) or simply erasable (“Just get over it”)
Traumatic Stress & the Child’s Developing Brain
Early childhood traumatic stress to the developing brain results in:
Physical (not always permanent) changes :
“ Hard-wired” neurological changes
Causes abnormal CNS organization / function
Profound implications re behavior / development / learning / cognition
Prevents realization of genetic potential
What does traumatic stress change in the brain?
Attachment
Affect / Emotion Regulation
Information Processing
Hippocampus Amygdala Cingulate Hypothalamus Major brain areas affected by traumatic stress Thalamus Corpus Callosum
Sensorimotor Cortex Cerebellum Dorsolateral PFC Brainstem (Locus Ceruleus, Raphe, Ventral Tegmentum) Other key brain structures also affected by traumatic stress Orbital PFC Corpus Callosum
It’s deja vu all over again!!! Yogi Berra Famous US philosopher
Neurobiologic “Controversy”
Two prominent researchers in FASD (Ed Riley) & traumatic stress (Martin Teicher) recently met and were unable to differentiate their MRI research slides
New strategies greatly needed to research these two groups separately
Here is a brief look at some recent functional MRI research…
Recent Neuroscience Research
New brain research has dramatically altered our thinking about traumatized / FASD children
New neuroimaging methods have driven this research:
Quantitative MRI (Magnetic Resonance Imaging)
Functional MRI
PET (Positron-Emitted Tomography)
SPECT (Single-Photon Emitted Computed Tomography)
MRS (Magnetic Resonance Spectroscopy)
DTI (Diffusion Tensor Imaging)
Adult ADHD Neuroimaging Study
8 Adults with ADHD
8 Controls
George Bush, MD, PhD
Functional MRI
Performed Stroop test while in fMRI scanner
Stroop Test
Red Blue Green Yellow
xxxx xxxx xxxx xxxx
Red Blue Green Yellow
Red Blue Green Yellow
Neuroimaging and ADHD MGH-NMR Center & Harvard-MIT CITP. Adapted from Bush, et al. Biol Psychiatry. 1999;45:1542-1552. 1 x 10 -3 1 x 10- 2 1 x 10 -3 y = +21 mm y = +21 mm Normal control ADHD Anterior Cingulate Cortex Frontal Striatal Insular network fMRI shows decreased blood flow to the anterior cingulate and increased flow in the frontal striatum in adult ADHD patients 1 x 10- 2
OK…it’s time to make it real!
What does all of this mean to health professional students?!
5 CNS pathways to explosive / inflexible kids:
Executive Function Skills
Language-Processing Skills
Emotion regulation Skills
Cognitive Flexibility Skills
Social Skills
Ross Greene, 2005
Traumatic Stress / FASD and the Developing Brain: Executive Function: Making it real
Working Memory (“RAM” of the brain)
Allows efficient multi-tasking
Separation of affect
Regulating arousal to achieve goals (e.g. learning)
Organization & planning
Facilitates problem-solving
Shifting cognitive set
Allows child to smoothly transition from their own agenda to the supervising adult’s agenda
Traumatic Stress / FASD and the Developing Brain: Language Processing: Making it real
Often unnoticed, often unassessed
Problems identifying internal emotions
Lack the capacity to “inform the world” that they are frustrated
Problems with conflict resolution
Teacher: “Use your words, young man!”
Student: “(expletives deleted)”
Traumatic Stress / FASD and the Developing Brain: Emotional Control: Making it real
Impaired ability of the right brain to communicate w/ the left brain
Via Corpus Callosum (connects R with L)
Balance problems
Sensory processing problems
Anger / explosiveness ( self-calming)
Loss of logical left brain function (language / memory) when stressed
Traumatic Stress / FASD and the Developing Brain: Emotional Control: Making it real
Traumatized / FASD kids often have significant difficulty regulating emotional experience :
Problems expressing emotions in a safe manner
Impaired modulation of emotional experience
Traumatic Stress / FASD and the Developing Brain: Emotional Control: Making it real
“ Fight-Flight-Freeze” phenomenon is common & underappreciated
Hypersensitive / overactive F-F-F system often a daily battle for traumatized / FASD children
Fear / Anxiety Anger connection
“Look in their eyes during a meltdown (if you dare) and you will often see fear” …MAS
Amygdala is the key player here
Traumatic Stress / FASD and the Developing Brain: Cognitive Flexibility: Making it real
Concrete / literal thinkers
Rigid behavioral templates for specific situations
Rule-driven (to a fault)
Over-focus on details
Overlap with the autistic spectrum
Traumatic Stress / FASD and the Developing Brain: Social Skills: Making it real
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