stress ll
TRANSCRIPT
- 1.STRESS
School related stress is the most prevalent, untreated causeof academic failure in our schools.
2. Stress
3. Flight or Fight
4. Stress Response
5. What happens under stress?
6. Fight or Flight
The result of this call to arms is that within seconds, every
system of the body is quickly tuned to one purpose: avoiding the
threat that is about to take your life!
Known as the fight or flight response, this process is
evolutionarily designed to increase the chances of surviving sudden
unexpected threats. You can imagine that when we were still hunting
for a livingand being hunted ourselvesthe speed of this response
could make the difference between life and death.
7. Slow Response
Accompanying this fight or flight reaction is a slower response. It
is this slow response that may have an important impact on both our
classroom performance and daily lives.
During stressful events, the pituitary secretes a peptide called
adrenocorticotrophin or ACTH, into the blood. ACTH travels through
the blood to the adrenal, where it signals the production of a
hormone called cortisol.
Cortisol aids the body in recovering from the detrimental effects
of acute stressful experiences.
8. Cortisol
Even non life-threatening stresses, such as worrying over an exam,
can work to produce small but significant elevations in the body's
cortisol levels. After enough of these small increases, the body
soon resets its control mechanism to maintain a higher constant
amount of cortisol in the body.
9. Cortisol helps the body manage stress by freeing up energy
stores. It works in the liver to release sugar into the
blood.
It also signals the body to release fat that the muscles store so
that the body can utilize the energy in them. The logic behind the
slower stress response is that the quick fight or flight response
uses up a lot of the body's available energy.
Cortisol
10. Cortisol
Unlike the fast response, which happens within seconds, the whole
process from stress onset to increased cortisol can take from one
to five minutes.
Unlike adrenaline, which is stored ready for use in the adrenal,
cortisol must be synthesized from scratch by the adrenal every time
more of it is needed. This synthesis takes time making the cortisol
response a slower process.
11. The body usually has some small amount of cortisol circulating
in the blood at all times. Following stress, however, this level is
increased.
The brain will turn off the pituitary signal to produce more
cortisol if it senses there is enough circulating in the blood
already.
The fact that cortisol works both in the body and in the brain to
turn off its own production sets up a feedback loop between the
brain and body.
12. The Chronic
Chronic elevations in cortisol can have long-term health
effects.
Heart disease, ulcers, insulin resistance, and hypertension have
all been associated with high levels of cortisol.
13. Stress in the classroom
Our modern life has liberated most of us from facing
life-threatening situations on a daily basis.
We have, however, replaced these threats with events that we
perceive, or react to - with the same high levels of cortisol
response.
Exams, social situations, performance reviews, and calls into the
boss's office have replaced the evasion of predators as the main
activators of our biological stress system.
14. Stress in the Classroom
In the classroom, any positive priming effects of stress on
learning may be even harder to observe... There is no guarantee
that any positive effects of stress on learning will outweigh the
negative cost of too much stress on our bodies.
15. Hippocampus
Every time stress hormones increase, the brain senses the change
with a cadre of receptors that detect cortisol and other
stress-related hormones. Interestingly enough, these receptors,
which are found throughout the brain, are concentrated the highest
in the hippocampus, a brain area involved in memory formation and
spatial awareness.
16. Stress and Memory
17. What is clear is that what constitutes stress is determined by
individual perceptions. How much control a person feels in a
particular situation dramatically effects how much of a stress
response his or her body produces. Keeping that in mind, the answer
to performance seems to lie in keeping a healthy balance between
not responding and over responding to the challenges and tests our
lives present us with.
18. First, people who are under a lot of stress have a difficult
time paying attention to the sensory inputs in the immediate
surroundings - their minds are pre-occupied with other thoughts and
are not focused on perceiving, interpreting, and reflecting on new
information in the environment.
19. Do you Recall?
Second, stress hormones cause disturbances in our brain chemistry,
which appears to make accessing previously learned material more
difficult. Just think back to a particularly stressful exam!
20. Stress and Memory
Chronic over-secretion of stress hormones adversely affects brain
function, especially memory. Too much cortisol can prevent the
brain from laying down a new memory, or from accessing already
existing memories.
The renowned brain researcher, Robert M. Sapolsky, has shown that
sustained stress can damage the hippocampus , the part of the
limbic brain which is central to learning and memory. The culprits
are "glucocorticoids," a class of steroid hormones secreted from
the adrenal glands during stress. They are more commonly know as
corticosteroids or cortisol .
21. Parental Stress Syndrome
22. Cognition
Cognition is your brains ability to concentrate, and process what
it is taking in. If your cognition is impaired your ability to
learn will likely be impaired as well.
23. So What can we DO?
24. 25. Stress Removal Tool
26. What are your take aways?
In a group of 4
Choose the 3 concepts about stress that you feel are the most
important for everyone to know
Create a movie short, a poem, a dramatization, a drawing, a song, a
rap, etc. to illustrate those concepts
You have 30 minutes