Hemispheric Laterlisation And Split Brain

Question 1

What is hemispheric lateralisation

Answer 1

It’s the idea that two halves of the brains are functionally different and each hemispheres has functional specialisations

Question 2

What does the left hemisphere focus on

Answer 2

Language, controls right side of the body and receives info from the right visual field

Question 3

What is the right hemisphere responsible for

Answer 3

Visual-motor tasks, controls left side of the body and receives info from the left visual field

Question 4

What are the 2 hemispheres connected with

Answer 4

Corpus callosum

Question 5

What is the role of the corpus callosum

Answer 5

Enables communication between the 2 hemispheres

Question 6

What is the surgery to divide the 2 hemispheres by severing the corpus callosum

Answer 6

Commissurotomy

Question 7

When is a commissurotomy done

Answer 7

When the patient has epilepsy

Question 8

What is the key study for hemispheric lateralisation

Answer 8

Split brain research

Question 9

Who was split brain research conducted by

Answer 9

Sperry and Gazzaniga

Question 10

What was the aim of split brain research

Answer 10

to examine the extent to which the two hemispheres are specialised for certain functions

Question 11

What was the background of the participants of the split brain reaserch

Answer 11

They were patients who had already undergone a commissurotomy

Question 12

What type of experiment is the split brain research and how

Answer 12

Quasi because all the patients had already their commissurotomy surgery

Question 13

How many ptts were there in the split brain research and what does this mean

Answer 13

Small study, similar to case studies, less representation and lack of generalisability

Question 14

What were the 3 tests for split brain rsearch

Answer 14

drawing, tactile test, describe what you see

Question 16

what was the result when the picture was presented to the left visual field

Answer 16

could not describe and may not even see

Question 17

what was the result when the picture was presented to the right visual field

Answer 17

they could describe what they saw and this shows superiority of the left hem in terms of language production

Question 18

what was the results when the object was placed in the left hand

Answer 18

couldnt describe what they felt however they coudl identify the object from a series of alternate objects

Question 19

what was the results when the object was placed in the left hand

Answer 19

could describe what they felt however they could identify the object from a series of alternate objects

Question 20

what was the results when the picture was presented to the left visual field

Answer 20

left hand would consistently draw clearer abd better pictires than the right hand which shows that the right hem is superior for motor tasks

Question 21

what was the results when the picture was presented to the right visual field

Answer 21

picture drawn would never be as clear as the one drawn by the left which shows how the right hem dominates the left for motor tasks