PS101 Lecture Notes - Lecture 3: Olfactory Bulb, Neurogenesis, Sept

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13 Jun 2018
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… continued from sept 29
Hemispheres: Lateralization
Specialization → left and right
Left → language, mathematics, analytical, sequential
Right → visual, spatial, holistic, hear language, creativity, intuition
Where does the signal come from and where does it go?
Left hemisphere coordinates right side and vice versa
Much of our primary functions are connected to the opposite side of the body
Things happening on the left are processed by the right hemisphere of the brain
Things happening on the right are processed by the left hemisphere
Left-Right Dominance
Dominant hand tends to tell you what side of the brain is working harder
Special Language Centres
Broca’s Area → Production of speech
Wernicke’s Area → Comprehension of language
Plasticity
Plasticity: the ability of the brain to reorganize and compensate from brain damage, a
change in function and structure
Reorganize
Repair
Rehabilitation after brain injury
Old view → once damaged, it is all over
Developmental literature - neurons in place prenatally
Proliferation versus Growth - key points developmentally
New findings
Neurogenesis - hippocampus (Limbic System → learning and memory), olfactory
bulb
Neurogenesis not just replacement, could be repair
Flexibility in the system
Growth and development of nervous tissue, new cells
Video clip of girl who had half of her brain removed
Plasticity comes at different developmental period (2,11,13), harder after you become a
teenager → younger you are when you have a major brain injury = more successful
recovery
find more resources at oneclass.com
find more resources at oneclass.com
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Document Summary

Right visual, spatial, holistic, (cid:3247)hear(cid:3248) language, creativity, intuition. Left hemisphere coordinates right side and vice versa. Much of our primary functions are connected to the opposite side of the body. Things happening on the left are processed by the right hemisphere of the brain. Things happening on the right are processed by the left hemisphere. Dominant hand tends to tell you what side of the brain is working harder. Plasticity: the ability of the brain to reorganize and compensate from brain damage, a change in function and structure. Old view once damaged, it is all over. Developmental literature - neurons in place prenatally. Proliferation versus growth - key points developmentally. Neurogenesis - hippocampus (limbic system learning and memory), olfactory bulb. Neurogenesis not just replacement, could be repair. Growth and development of nervous tissue, new cells. Video clip of girl who had half of her brain removed.

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