estimated time schedule – plan ahead! today:finalize myth #4/begin myth #5 tuesday: finalize myth...
TRANSCRIPT
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Estimated Time Schedule – Plan Ahead!
Today: Finalize Myth #4/Begin Myth #5
Tuesday: Finalize Myth #5 NotesDiagrams*New Seats!
Thursday:Brain DissectionsBegin Review
Monday: Test BrainTerm Cut-offExtra Credit DUEMissing/Late Work DUE
Wednesday: Film/Film Worksheet
Friday: Film/Film Worksheet
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Reflection
About what percentage of their potential brain power do you think most people use?*Take out your devices. Type this question into a text, tweet, post, etc. *Mark the first three answers/responses you get on the board.
College students:1/3 of Psych majors said 10%
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Myth #5:Most People Only Use 10% of Their BrainsBrain & Behavior
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1. Where Does This Myth Come From?
•Word of mouth
•Who started this myth?
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a. William James, 1908
"We are making use of only a small part of our possible mental and physical resources." (from The Energies of Men, p. 12).
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b. Albert Einstein
“Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.”
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c. Karl Lashley
Removed large areas of cerebral cortex in rats; Animals could still relearn tasks.
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d. Uri Geller, Spoon “Magic”
“Mind Power”
Claimed he was using the untapped power of mind.
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Common Belief Persists
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What Does Research Tell Us?
There is no scientific evidence to suggest that we use only 10% of our
brains.
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2. What are people trying to get at with this 10%?
• INTELLECTUAL POTENTIAL…not actually that you only use 10% of your brain.
• Is that possible?
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Does this mean that you would be just fine if 90% of your brain was removed?
3. The average human brain weighs…
3 pounds!
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a. If 90% of it was removed, that would leave 0.3 lb. of brain tissue.
That's about the size of a sheep's brain.
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What would that do to you?
Example: Wernicke’s Aphasia
Left temporal lobe Understanding language“Aphasia” means “lack of..”
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Our brains have been shaped by natural selection.
4. Brain tissue is expensive to grow & operate.
a. 2 – 3% of body weight, uses over 20% of the oxygen we breath!
Squandering of resources to build & maintain such an under used organ!
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5. Brain Imaging
a. EEG’s: Electroencephelogram Electrical activity on brain’s surface
b. PET: Positron Emission TopographyActivity
c. MRI: Magnetic Resonance Imaging Detailed pictures of tissue
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EEG: electrical activity
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PET scan: glucose burn
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MRI: detailed pictures
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Results of mapping?
All areas at work…no “quiet areas”waiting for assignment.
Brain regions
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Brain Regions – Diagram #1
•1. Hindbrain•2. Mid-brain•3. Forebrain
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Hindbrain
• Spinal cord
•Medulla: breathing, heart rate, cross-over
• Pons: sleep/dreams
• Cerebellum: balance, coordination
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Hindbrain
Reticular formation
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Estimated Time Schedule – Plan Ahead!
This Week:Wednesday: New Seats
Finalize Notes/DiagramsBrain “Dissections”
Friday: Superhero StoriesComputer LabTests Returned
Next Week:Tuesday: Film/Worksheet
Superhero Stories DUE
Thursday: Fall Break
Two Weeks:Monday: Finalize Film/Worksheet DUE
Review
Wednesday: Test Brain
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Midbrain
•Reticular Activating System (RAS)
Arousal: keeps you awake
Alerts the brain
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Forebrain
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Forebrain
• Thalamus: relay center
•Hypothalamus: eating, drinking, body temperature, sexual behavior, fight or flight; HOMEOSTASIS
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Forebrain: Limbic System
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Limbic System
•Hippocampus: Memory formation
•Amygdala: Anger, aggression, & fear
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Cerebral Cortex• Cerebral = higher processing• Cortex = center ofCerebral Cortex = Center of Higher Processing
Frontal Lobes – Motor CortexPersonality/Judgement/Decisions
Parietal Lobes - Sensory CortexAssociations/Memory
Temporal Lobes - Auditory CortexFacial Recognition/Long-term Memory
Occipital Lobes - Visual Cortex
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Cortex: Lobe Divisions
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Association Areas
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Another Possible Cause?
•Misunderstood terms in brain research
• “silent cortex”
•Used term to refer to the association areas in the cortex.
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Association areas
•25% of cortex devoted to specific functions
•75% devoted to coordinating & integrating information
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Dissections
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Superheros
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Handout/LabScience fiction writers are always searching for good ideas for plots that will capture the interest of their readers. A common premise during one particular era of science fiction was that radiation somehow altered biological processes, transforming normal humans into super humans – some good, some evil. One example is the Incredible Hulk, who, through a laboratory experiment, developed superhuman strength that manifests itself when he is angry.
Your Task: Create your own “brainy” superhero!Extra Credit: Create a super villain with an amplified brain
structure as well and include the SAME information about the villain.
20 points extra credit for super villain write-up10 points extra credit for picture/visual