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Psychology
Biospychology
Hemispheric lateralisation
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Created by
Evie Marsden
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Cards (20)
Who conducted split-brain research on epilepsy patients?
Sperry
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What was the treatment for the epilepsy patients in Sperry's research?
Their
corpus callosum
was cut
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How many right-handed epilepsy patients were involved in Sperry's research?
11
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What does split-brain research refer to?
Inability of
hemispheres
to communicate
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How was the procedure conducted in Sperry's research?
An image or word was flashed
briefly
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What was the duration for which the image or word was flashed to the patients?
One tenth
of a second
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What did patients report when the image was presented to the right visual field?
They would say what
they
saw
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Which hemisphere specializes in speech and language?
The
left hemisphere
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What did patients report when the image was presented to the left visual field?
They often reported
'nothing'
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Why couldn't patients say what they saw when the image was presented to the left visual field?
It was processed in the right
hemisphere
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What does the ability to draw with the left hand suggest about the patients?
They can comprehend
right hemisphere
processing
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What could patients do when the word or image was presented to the left visual field?
Select the correct item using their
left hand
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What are the conclusions drawn from Sperry's split-brain research?
Left
hemisphere
: specialized for speech and language
Right hemisphere: specialized for
visual-spatial processing
and
face recognition
Behavior control relies on hemisphere connectivity
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Why might the findings of Sperry's research not be useful for humans?
HL
may not be advantageous for brain function
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What did researchers find about HL in chickens?
HL allowed them to perform two tasks
simultaneously
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What is a strength of Sperry's research regarding internal validity?
Use of highly controlled
standardised
procedures
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How did Sperry ensure the visual field was activated correctly during the experiment?
One eye was
blindfolded
and
fixed
on a
point
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What was the issue with the sample used in Sperry's research?
It lacked
generalizability
due to
epilepsy
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What confounding variable might have influenced Sperry's findings?
Changes in the brain due to
epilepsy
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What would have been a more appropriate control group for Sperry's research?
Participants with
epilepsy
but without
split-brain
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