biopsychology: split brain research Flashcards

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1
Q

sperry + gazzaniga?

A

involves patients who experienced surgical separation of hemispheres- allows us to find out the extent to which brain function is lateralised. they assessed them in language, tactile + motor skills.

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1
Q

corpus callosum?

A

hemispheres connected through nerve fibres which facilitate communication between the 2 hemispheres

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2
Q

describe what you see?

A

picture in lvf: says nothing, can’t describe,
picture in rvf: could describe what they saw

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3
Q

tactile tests?

A

object in left, object seen in rvf: could not describe what they felt + left hand could identify it by selecting a similar object.
object in right, object seen in lvf: can describe + select item

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4
Q

motor skills tests?

A

draw with left, seen in rvf: consistently drew clearer with left.
draw with right, see in lvf: attempts to draw but not as good. demonstrates superiority of right hemsiphere.

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5
Q

scientific research?

A

quasi experiments + clinical case studies so combines qualitative + quantitative approaches, so studied statistically + descriptive which increases validity

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6
Q

sbr useful?

A

useful in discoveries of lateralisation

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7
Q

added to unity of consciousness debate?

A

sbr patients demonstrate that an intact corpus callosum + correspondingly, interhemispheric communication are not essential for consiousness.

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8
Q

lack of controls?

A

lack of valid control groups, may be additional effects of surgery other than just procedure, some experienced drug therapy for longer

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9
Q

sample size?

A

11 atypical patients, can’t compare, as they experienced different levels of surgery

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10
Q

ecological validity +plasticity?

A

findings of study unlikely to be found irl as someone with severed cc who had both eyes would be able to compensate for such a loss.
normally these patients don’t notice anything in their day to day

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11
Q

language not restricted to left h?

A

turk et al: discovered JW (damaged left h) developed capacity to speak in right hemisphere

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