Neurons - Lecture 4 Split-Brain Studies Neurons...

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1 Lecture 4: Split-Brain Studies, Neurons, & Neurotransmitters Lateralization Each hemisphere is specialized Left Language processing Right Emotion Spatial tasks Neural connection between the hemispheres Normally, hemispheres share information Corpus Callosum 2 Cerebral Hemispheres Back Front Left hemisphere connected to Right side of body Contralaterally connected to body Right hemisphere connected to Left side of body
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2 Vision is a bit tricky… Contralateral visual fields Left visual field (both eyes) to Right hemisphere Right visual field (both eyes) to Left hemisphere Optic Chiasm “Crossing over” NOT related to corpus callosum Information Pathways Optic Chiasm Corpus Callosum Split-Brain Operations Severe epilepsy Optic chiasm remains intact Visual info gets in to cortex of opposite hemisphere Cut corpus callosum Hemispheres do not share their visual info How does this affect behavior? Split-Brain Experiments Present information to just one hemisphere
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3 How can we test what the right hemisphere sees? How can we test what the left hemisphere sees? Hint: What does each hemisphere do well? Testing Left Hemisphere Language Right vision Testing Right Hemisphere Left hand Left vision Another Split-Brain Test Left hemisphere Input: Sees a ring Output: Language Can say, “ring” Right hemisphere Input: Sees a key Output: Left side of body (i.e., left hand) L R Remember Left hemisphere Good at language tasks Connected to right side of body Right hemisphere Good at spatial tasks Connected to left side of body Video - Joe
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4 How does the nervous system work? Neurons!!
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This note was uploaded on 04/02/2010 for the course PSC PSC 001 taught by Professor Paoli during the Winter '09 term at UC Davis.

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Neurons - Lecture 4 Split-Brain Studies Neurons...

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