L7.2 - Split-brain Research

Question 1

Patients become split brain as a result of

Answer 1

Corpus callosum severed to prevent electrical activity from seizures

Question 2

Info presented to the left visual field…

Answer 2

Goes to the right hemisphere and vice versa

Question 3

As the corpus callosum is severed,

Answer 3

There’s no way for info presented to one hemisphere to travel to the other

Question 4

How would an experiment work?

Answer 4

Image presented to either visual field when staring at a dot on a screen
Asked to make responses with left/right hand or verbally

Question 5

If image is presented to the left hemisphere

Answer 5

Right hand draws

Able to speak

Question 6

If image is presented to the right hemisphere

Answer 6

Left hand can draw

Question 7

Disadvantages of split brain research related to research methods

Answer 7

Some studies have small samples e.g. 3

Invalid to compare control group which has no epileptic seizures to a group which has

Question 8

Disadvantage related to individual differences

Answer 8

Disconnection is greater in some than others

Some have had drug therapy for a lot longer which may affect how the brain works