the external brain unit 2: bio basis of behavior lesson 3
TRANSCRIPT
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The External Brain
Unit 2: Bio Basis of Behavior
Lesson 3
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Objectives:
Distinguish between characteristics of the left and right hemispheres of the brain.
Identify the location and function of the four lobes of the brain.
Locate the specialized association areas of the cerebral cortex.
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Cerebral Cortex & Cerebrum
Wrinkled coveringGyri- bumpsSulci- grooves, fissures
Hemispheres2 halves of brain (L-R)
Corpus CallosumWide band of nerve
fibers connecting hemispheres
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Lateralization
Roger Sperry (1960s)
Each hemisphere is responsible for different mode of thinking…we prefer one over another.
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Left Brain/Right Brain/Whole Brain Test
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Write down which of the pair best describes you… Names Faces Organized
Spontaneous Realistic Fantasy Logic Intuition Well-structured Open-ended Language Picture Creative Not
creative Humorous Serious Details Main Idea Systematic Plans Exploration Vegetables Fruits Micromanage Delegate Emotional Reserved
All left hand options = right brain behaviors / preferences
All right hand options = left brain behaviors / preferences
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Split Brain Damage
Corpus CallosotomySever C2 , reducing
communication between 2 hemispheres
HemispherectomyRemoval or disabling of
entire cerebral hemisphere
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Split Brain Experiments
Chimeric Figures
Info from r visual field to l hemisphere and vice versa
Say if man/woman? Language = Left = Man
Point to man/woman? Visual = Right = Woman
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Frontal Lobe
Front of cerebral cortex (blue)
“Executive Director” Reasoning, planning,
coordination, problem solving, working memory
Emotion, socialization, personality, sexuality
Motor movement
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Parietal Lobe
Behind central fissure (green)
Sensation and perceptionTouch, temp,
pain, location of limbs
Number relationsObject
Manipulation
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Occipital Lobe
In rear portion of cortex (yellow)
Visual processing center
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Temporal Lobe
On sides of cortex (pink)
Auditory Processing, memory formation, language comprehension, taste & smell
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Association Areas
Involved in higher mental functions.Interpret, integrate, act on incoming info.
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Closure
Which side of the brain…dominates in left-handed pitcher?dominates in right-handed batter?Better able to use info that is heard?Better able to use info that is seen?Shows a wide range of emotion?Better at tasks involving creativity?Better at tasks involving application?