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Psychology (8,026)
PSYA02H3 (1,065)
John Bassili (120)
Lecture

Lecture 4

3 Pages
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Department
Psychology
Course Code
PSYA02H3
Professor
John Bassili

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Psychology Lecture 4
-Washoe’s performance is not an act of language because it is a complicated process to teach him
the symbols and their meanings
-while human can learn language at an early age effortlessly
Functional Magnetic Resonance Imaging (fMRI) Study
-measures the active area in brain when a human is engaged in speaking
-scanner of the brain
-advantage that X-ray does not have is it can produce image of soft tissue whereas X-ray can
only produce image of bone
-in this case, the rhyming (similarity in sound) task
-male has active localization in the left hemisphere
-female has some active localization in both left and right hemisphere
-fMRI measures the depletion of oxygen in the blood
-brain sends a signal to the cardiovascular system to send oxygenated blood to brain region that
involves in activity during the task
-when people are outputting rhyme, more oxygenated blood is sent in a particular region when it
is not engaged in activity
-colour shown in the picture of the brain is symbolic, the brain does not actually light up during
the task
-fMRI relies on blood oxygenated level dependence, which is also the response of the people
Pros and Cons of fMRI
-good with spatial resolution
-can look deeply in the brain
-not good with tempo resolution
-cannot track fraction of the second of the brain’s activity
EEG
-technology that involves electrode that picks up small current at the surface of the skull for
activity
-pros and cons of EEG
-less expensive
-quick with tempo resolution
-not good with localization of brain
Positron Emission Tomography (PET) Scan
-inject isotope as tracer in the body
-use scanner to pick up where blood is going
Wernicke’s area
-responsible for sound signal
-recognize sequence of sound and interpretation of meaning of phoneme
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Description
Psychology Lecture 4 -Washoes performance is not an act of language because it is a complicated process to teach him the symbols and their meanings -while human can learn language at an early age effortlessly Functional Magnetic Resonance Imaging (fMRI) Study -measures the active area in brain when a human is engaged in speaking -scanner of the brain -advantage that X-ray does not have is it can produce image of soft tissue whereas X-ray can only produce image of bone -in this case, the rhyming (similarity in sound) task -male has active localization in the left hemisphere -female has some active localization in both left and right hemisphere -fMRI measures the depletion of oxygen in the blood -brain sends a signal to the cardiovascular system to send oxygenated blood to brain region that involves in activity during the task -when people are outputting rhyme, more oxygenated blood is sent in a particular region
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