Flashcards
Brain structures
Flashcards do conjunto (23)
- 1What case study is related to localisation of function in the brain and would be used to introduce an SAQ on this topicPhineas Gage - damage to frontal lobe caused personality to change
- 2What does having damage to Wernicke's area mean?You will be able to produce (usually unintelligible) speech but cannot understand it
- 3What does having damage to Broca's area mean?You can understand speech but cannot produce it
- 4Who did Broca study in a case study to show evidence for localisation of Broca's area?'Tan' - could not produce speech but could understand it normally.
- after his death a post-mortem examination showed damage to Broca's area
-1861 - 5What is localisation of function of the brain?Determining a specific function to a specific area of the brain
- 6What is lateralisation of the brain?Determining a specific function for on of the hemispheres (left/right) of the brain
- 7What are the two hemispheres of the brain joined by?Corpus callosum
- 8When was Sperry's study conducted?1968
- 9What does Sperry's study provide evidence for?Localisation of the corpus callosum - connects the two hemispheres so that information can be passed from one to the other
- 10How many split-brain participants were there in Sperry's study?11
- 11Give an overview of the Sperry study-Participants had one eye covered and told to look at a fixed point on a screen
-Participants heads in vice
-Pictures projected onto screen in either left or right visual field very quickly
-Participants asked to either draw or say what they saw - 12What were the results of Sperry's study?If asked to say what they saw in right visual field the could as language is lateralised to left hemisphere. If in left, could not say but could draw and vice versa.
- 13Give 5 evaluation points of Sperry's studySmall Sample
High ecological validity - real split brain participants
Temporally valid due to slow human evolution
Can infer cause and effect
Task doesnt reflect real life - 14What do MRI scans measure?Oxygen levels in blood in the brain - more oxygen = higher activity in certain place
- 15How do PET scans measure brain activity?Injecting a radioactive substance which binds to glucose in the blood, acting as a tracer for where there is more glucose = higher activity
- 16Give three advantages and disadvantages of PET scansHelpful in research
Clear picture of brain activity
Gives scientific evidence
Radioactive substance = harmful
Not as precise as fMRI
Reductionist - 17When was Raine et al. study carried out?1997
- 18What did Raine et al. aim to find and what kind of brain imaging technique did they use?PET scans.
Whether there is a difference in brain activity between murderers and non-murderers - 19What were all murder participants pleading in their court-case?Not-guilty for reasons of insanity
- 20How many participants and what age?41: 39 male, 2 female
Average age 34 - 21What were the control and non-control group matched on in Raine et al's study?Age, gender and whether they have schizophrenia
- 22Outline Raine et al's studyParticipants underwent a PET scan whilst undertaking a Continual Performance Task
(CPTs show brain activity in frontal, temporal and parietal lobes)
Monitored for 32 minutes after being injected with the radioactive marker 30 seconds into the test - 23What were the results of Raine et al's study?Performance for the CPT was the same for control and non-control groups
Significant difference in frontal lobe glucose metabolism - murderers had less
Murderers had asymmetrical activity in the amygdala
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- Descrição
- Includes localisation of function of the brain and uses of brain imaging techniques.
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- grenouilleverte3
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