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The Brain Boss, The Brain
Karen Kolbergon 5 December 2012
Transcript of The Brain Boss, The Brain
Brave The combination of a underdeveloped prefrontal cortex and over active nucleus accumbens can explain most of the sterotypical teenage behaviour. How much does an average adult brain weigh?
How much oxygen does it consume?
What % is water?
What % is comprised of fat cells? reasoning
parts of speech
problem solving movement & orientation
perception & recognition perception
recognition of auditory stimulus
speech The brain continues to "prune" these connections into the early 20's with the frontal lobes, responsible for reasoning and problem solving, developing last. By age 6, the brain is already 95% of its adult size. "It's sort of unfair to expect teens to have adult levels of organizational skills or decision-making before their brains are finished being built."
"Teenagers are choosing what their brains are going to be good at--learning right from wrong, responsibility or impulsiveness, thinking or video games." The process of addiction actually uses the same neurochemistry as general learning. That means that when teens drink or smoke, they're laying down a lasting sensitivity that can easily lead to addiction. Teenagers are 4x as likely as older drivers to be involved in a crash and 3x as likely to die in one, according to the Insurance Institute for Highway Safety. Neurons have:
a cell body
axons and terminal buttons
The terminal buttons release neurotransmitters that carry
information to other neurons. MEDICAL IMAGING 1) allows us to understand the effects of drug use on the brain
2) shows shrinkage of specific areas
3) shows where the pleasure and reward pathway is located
4) allows us to see the development as the brain ages To evolve or
not to evolve?
That is the
question. ... small Tough choice! BASICS Calories consumed = 20%
Water = 78-80% RESEARCH Weight = about 3 lbs
Consistency of soft butter ADDICTION STRATEGIES ADOLESCENCE DEVELOPMENT 8 weeks after conception
The cerebral cortex begins to develop and continues to form.
5 months, during prenatal development
The brain evolves from a primitive structure into a much more complex form.
8 months after conception
fetal brainwaves can be detected and axons become protected with myelin.
the human brain is in a remarkably unfinished state. Most of its 100 billion neurons are not yet connected. Pruning Connections Time-lapse MRI images of human-brain development between ages 5 and 20 yrs. Alcoholism Marijuana MS Cocaine Parkinson's Alzheimer's visual processing Brain has shrunken Activity reduced Nerve impulses reduced Reduced blood flow Low metabolism Degerations of cells One of the last parts to mature is
the area that is in charge of making sound judgements and calming unruly emotions. More Ron Old Ron INTERESTS Encourage positive activities More White Matter:
enables nerve signals to flow freely
improved neural organization
governs judgment Grey Matter
White Matter is made up of fibers with extended axons with a coating of myelin. Myelin is responsible for the white appearance of the white matter (60% of brain).
allows communication to and from grey matter areas, and between the grey matter and the other parts of the body. is made up of nerve cell bodies or neurons (40% of brain)
processing and cognition Whassa Matter is the empty space between the cells that aren't connecting. USE IT OR LOSE IT Brain Circuitry Priming "The brain is my second favorite organ."
Woody Allen SPECT Scan MRI studies show that the brain is only 80% developed in adolescents and the frontal lobes aren't fully connected.
Lack of impulse control
Difficulty identifying emotions
teens use amygdala
adults use prefrontal cortex
Decision making and reasoning is not fully developed. "I've got the brain of a four year old.
I'll bet he was glad to be rid of it."
Groucho Marx 100 billlion neurons It's not that simple. Depression in adolescence may set up circuits in the brain that will make it much harder to treat the illness later in life. Yellow and Red = Grey Matter (neuron growth) Peaks at age 11 (girls) 12 (boys) increase in White Matter connections Pruning of redundant neurons Strengths Still Under Construction Weaknesses Impulsive
Irresponsible ADULT Brain TEEN Brain Addiction is a form of learning.
Neurons grow based on experience. Cells that fire together, wire together.
A state (temporary) can become
a trait (permanent) measures
blood flow "The teenage brain is not just an adult brain with fewer miles on it, it's a paradoxical time in development. These are people with very sharp brains, but they're not quite sure what to do with them." Arnold Cerebarbellum The ability of the brain to make associations between places, people and things that reinforce, or cue, specific drug behavior. = = Next steps? Corpus Callosum
“Reality is merely an illusion, albeit a very persistent one.”
― Albert Einstein Stages of Sleep Meditation is now being shown by scientific research to have positive, long-lasting effects on the human brain — even among children. The steep climb
toward adulthood Prezi created by
Karen J. Kolberg Nerve cells = neurons (Look how quickly your brain let you know "thousands" was misspelled.) Information processing system with thousnads of connections through
which it receives and sends signals. Thank your brain for its kind attention. Myelin, the protective sheath that covers neurons, is composed of 30% protein and 70% fat. Look closely at this image. Michelangelo studied anatomy.
Now look at the shape of God's cape. What connects the left and right cerebral hemispheres and facilitates interhemispheric communication? Omega 3's
High nutrient diet
Laughter & play
Add a challenge
Wear a helmet
Sing the blues
Lay off the booze Working
used for the
the brain used for
planning, is damaged
by alcohol and drug use. The loss of control
over drug consumption,
compulsive use and
craving. Sir Dopamine Every addicting substance that affects feelings of pleasure, modifies the neurotransmitter, dopamine, in the pleasure/reward pathway of the brain. You have brains in your head.
You have feet in your shoes.
You can steer yourself
any direction you choose.
Dr. Seuss Marked decreased activity across whole surface. All addiction involves long-term, sometimes
lifelong neuroplastic change in the brain. Intervention Treatment Prevention Tolerance: needing more and more of a drug to get the same pleasurable effect.
Sensitization: needing less and less to crave the drug intensely. I felt a Cleaving in my Mind-as if my Brain had split-
I tried to match it-Seam by Seam-but could not make it fit.
Emily Dickinson No other organ in the human body takes so long to develop as the brain does or goes through as many changes. Ashes to ashes,
Dust to dust,
Oil your brain,
Before it rusts. With treatment your life doesn't
Have to go down the....