Lateralisation of function of the brain - Split-brain Research

Question 1

define lateralisation of the brain

Answer 1

idea that some mental processed are mainly specified to 1 hemisphere of the brain

Question 2

Example - lateralisation in the brain

Answer 2

language - left

Question 3

define split-brain procedure

Answer 3

when brain hemispheres are separated

severing corpus callosum

Question 4

what is contralateral processing of visual information?

Answer 4

idea that:

• info from left visual field is processed in right hemisphere (vice versa)

Question 5

What is that corpus callosum?

Answer 5

bundle of fibres allowing the hemispheres to communicate to eachother

Question 6

Who did split-brain research?

Answer 6

Sperry

Question 7

Sperry - aim

Answer 7

show that hemispheres of brain have certain functions

Question 8

Sperry - sample

Answer 8

11 patients who had corpus callosum cut (control epilepsy)

Question 9

What happends is corpus callosum is cut?

Answer 9

person is unable to communicate to the left, what they see from the right visual field

Question 10

Sperry - procedure

Answer 10

1) stare at fixed dot
2) show imaged to left or right for 1/10 sec (other eye blindfolded)
3) describe what they saw

Question 11

Sperry - why 1 eye blindfolded?

Answer 11

to make sure 1 hemisphere was receiving info at a time