One Brain or Two Gazzaniga M S 1967 Get into your group Group1Lori Liza Alyssa Erin Baylee Group2 Alicia Kalyee Spencer William Travis Group 3 Katrina Holley Hallie Landon Kayla ID: 559052
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Brain Lateralization
One Brain or Two?Gazzaniga, M. S. (1967)Slide2
Get into your group!
Group1:Lori, Liza, Alyssa, Erin, Baylee
Group2: Alicia, Kalyee, Spencer, William, TravisGroup 3: Katrina, Holley, Hallie, Landon, Kayla
Group 4: Kristin, Olivia, Taylor, Hunter, CiaraGroup 5: Seth, Megan, Curtis, Shawn
Group 6: Brianna, Kara, Rebekah, KelseySlide3Slide4Slide5
L
eft hemisphere – language, logic, laughter
Controls the right side of the bodyLogical, verbal, sequential
Positive emotionsRight hemisphere – Control the left side of the body
Spatial, emotional intuition, music, “big picture”
(Neat fact: People with damage to the left hemisphere may lose their ability to speak but not sing (a right hemisphere task). They can redevelop language by learning to sing everything they want to say!)Slide6
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
What is the large composite letter?
H (right brain active)
2. What is the small component letter?
D (left brain active)
Slide7Slide8
Which face looks happier to you?Slide9Slide10
FORK SPOONWhen asked to SAY what they saw, they answer __________________
(spoon)When asked to pick up what they saw with their left hand, they will pick up a ______.(fork)Slide11
Dr. J briefly flashed a picture of a key in the right visual field of a split-brain patient. The patient could probably
A. verbally report that a key was seenB. write the word “key” using her left handC. draw a picture of a key using the left hand
D. none of the above Answer: ASlide12
A split brain patient has a picture of a knife flashed to her left hemisphere and that of a fork to her right hemisphere. She will be able to
A. identify the fork using her left hand.B. identify the knife using her left hand.C. identify the knife using either hand.
D. identify the fork using either hand. Answer: ASlide13
What will happen as a neurosurgeon sedates the entire right cerebral hemisphere of a patient who is asked to count aloud with both arms extended upward?
A. her left arm will fall and she will become speechless
B. her right arm will fall and she will become speechlessC. her left arm will fall and she will continue counting
D. her right arm will fall and she will continue counting Answer: cSlide14
People should typically recognize familiar words more rapidly when spoken into their __________ ear.
Answer: right
People should typically recognize familiar melodies more rapidly when played into their ________ ear. Answer: left
Note: Not all people have such simple separations between hemispheres. Women (more than men) tend to use both sides of their brain when interpreting language.Slide15
Plasticity – the brain’s capacity to reorganize
Blind person’s sensory cortex for their fingers may expand.
In blind people, the visual cortex is activated when they read Braille.In deaf people, some visual information is process in the temporal lobe.
Hemispherectomy – removal of an entire hemisphere of cerebral cortex; if surgery performed when young, other hemisphere takes over