Biological - Regions of the Brain

Question 1

SPERRY - Background

Question 2

SPERRY - Aim

Answer 2

• Investigate effects of Commissurotomy
• To Map Lateralisation
• Show information can be restricted to One Hemisphere

Question 3

SPERRY - Method

Answer 3

• Opportunity sampling
• 11 patients who had a CoMM-iSS-uro-tom-y due to Epilepsy
• Quasi experiment, Lab experiment
• DV: performance in Stimuli tests that displayed information to only 1 Hemisphere
  
  • Wrote Down or Said what they Saw/Felt

Question 4

SPERRY - Procedure

Answer 4

• Expose 1 or 2 Hemispheres to a stimulus & evoke a response. Stimuli were either: Visual, Touch or Auditory.

Question 5

SPERRY - Results

Answer 5

• Information presented to one Hemisphere/Visual Field can only be remembered by the same Hemisphere/Visual Field
• Only the left Hemisphere (RVF) can verbally describe/write about what it sees
• Only the right Hemisphere (LVF) can visually process/draw what is sees
• Both Hemispheres can operate simultaneously & individually

Question 6

SPERRY - Conclusions

Question 7

SPERRY - Generalisability

Answer 7

• Ethnocentic: all English-speaking

Question 8

SPERRY - Reliability

Question 9

SPERRY - Applications

Answer 9

• Suggestion of CoMM-iSS-uro-tom-y safety

Question 10

SPERRY - Validity

Question 11

SPERRY - Ethics

Question 12

SPERRY - Link to Theme

Answer 12

• Illustrating the Function of the Corpus Callosum between Hemispheres
• Studies how a change in Brain Structure can effect Behaviour

Question 13

SPERRY - Link to Area

Question 14

SPERRY - Understanding of Individual, Social & Cultural Diversity

Question 15

SPERRY - Remember by

Question 16

SPERRY - Biological Terms

Answer 16

CoMM-iSS-ures - structures that join Hemispheres consisting of nerve fibres
CoMM-iSS-uro-tom-y - operation that seperates brain Hemispheres (cuts Commissures)
Contralateral Control - The motor function of each half of the body is controlled by the Opposite Hemisphere

Lateralisation - different Hemispheres are responsible for specific functions or behaviours
Localisation - different areas of the brain are responsible for specific functions or behaviors

Visual Fields (LVF)/(RVF) - part of unfocused vision to the Right/Left Respectively (opp.)
Right Hempishere Responsibilities: Creativity, Emotion, Drawing
Left Hemisphere Responsibilities: Language, Logic, Writing

Question 17

CASEY - Background

Question 18

CASEY - Aim

Question 19

CASEY - Method

Answer 19

• fMRI scanners
• Images of Happy & Sad faces
• 562 Pupils aged 4
• Stanford’s Bing Nursery School
• 155 Repeated in their 20s
• Gynocentric
• Longitudinal, Quasi/Natural
• 2x2 (exp. 1); Male OR Female face & Go OR No-Go

Question 20

CASEY - Procedure

Answer 20

Experiment 1 - 59 Participants, Remotely done from Homes, One sex was the ‘go’ stimulus, regardless of emotion showed, L Delayers at 4 remained so
Experiment 2 - 15 High delayers, 11 Low Delayers

Question 21

CASEY - Results

Question 22

CASEY - Conclusions

Question 23

CASEY - Generalisability

Question 24

CASEY - Reliability

Question 25

CASEY - Applications

Question 26

CASEY - Validity

Question 27

CASEY - Ethics

Question 28

CASEY - Link to Theme

Question 29

CASEY - Link to Area

Question 30

CASEY - Understanding of Individual, Social & Cultural Diversity

Question 31

CASEY - Remember by

Question 32

CASEY - Biological Terms

Answer 32

Ventral Stratium - deep inside Hemispheres, receive information from many Brain Areas, e.g. RIFG
Inferior Frontal Gyrus - Frontal Lobe, the right one/the RIFG manages go/no-go tasks

Question 33

SPERRY & CASEY - SPERRY diffs

Question 34

SPERRY & CASEY - CASEY diffs

Question 35

SPERRY & CASEY - Similarities