Biopsychology: Split brain research Flashcards
Where did Sperry get the visual apparatus from?
He created it
What’s the difference between reliability and validity?
Reliability = how consistent and stable the results of an assessment are
Validity = how well a test measures what it was supposed to
What is the Wernicke area responsible for?
Understanding
What were the conclusions of Sperry’s research?
Left and right hemispheres are lateralized, Right hemisphere = visual+spatial processing + facial recognition, Left hemisphere = language, Corpus callosum important to be a fully functioning person
Describe Sperry’s second method of research
Ppts asked to draw what they can see - object perceived on LVF could draw it well, object perceived on RVF struggled to draw it well
If someone with a split-brain saw an object in their Left field of view, how would they react?
They would draw the object because the optic nerve of the left eye is connected to the right hemisphere of the brain (which is responsible for motor function) - Once the left hemisphere can SEE what they are drawing, then they can say the object
What condition does removing the Corpus Callosum treat?
Epilepsy
Name a real-life application of Sperry’s research
Can be compared to ‘normal’ brains to further understand areas and functions of the brain - high ecological validity
Sperry: How long did the visual stimuli appear on the screen and why?
1/10th - not enough time for eye movements
What is the right hemisphere for?
Motor
Define lateralisation
Referencing the two hemispheres
Which hemisphere processes information from the left field of view?
Right hemisphere
What is the Broca area responsible for?
Speech
What is the left hemisphere for?
Language
Why were multiple tests done on each participant?
To see how each hemisphere was able to process information - Increases reliability and internal validity
