Hemispheric Lateralisation & Localisation of Function

Question 1

What is the idea of localisation?

Answer 1

Particular parts of the brain are associated with particular functions and processes.

Question 2

What is the idea of the brain being holistic?

Answer 2

The idea there isn’t specific areas for functions, the whole brain is used at the same time.

Question 3

Name the four main lobes.

Answer 3

Parietal, frontal lobe, temporal lobe, occipital lobe.

Question 4

What is the occipital lobe responsible for?

Answer 4

Sight (visual cortex).

Question 5

What is the temporal lobe responsible for?

Answer 5

Sound (auditory cortex)

Question 6

What is the parietal lobe responsible for?

Answer 6

Sensory perception and integration.

Question 7

What is the frontal lobe responsible for?

Answer 7

Higher cognitive functions, memory, emotions, impulse.

Question 8

Where is the motor cortex?

Answer 8

Frontal lobe

Question 9

Where is the somatosensory area?

Answer 9

Parietal (senses)

Question 10

Where is the Broca’s area?

Answer 10

Left of frontal lobe.

Question 11

Where is Wernicke’s area?

Answer 11

Left temporal lobe.

Question 12

What is Broca’s Aphasia?

Answer 12

Disorder characterised by problems producing speech with fluency.

Question 13

What is Wernicke’s Aphasia?

Answer 13

Disorder characterised by problems with language comprehension.

Question 14

What is the idea of lateralisation?

Answer 14

The two hemispheres (left and right) functions different in separate hemispheres.

Question 15

What is the belief about language?

Answer 15

Localised to left hemisphere.

Question 16

What research allowed us to understand lateralisation more?

Answer 16

Sperry- split brain participants.

Question 17

Explain the procedure of Sperry.

Answer 17

11 Split Brain Participants (corpus callosum.
Had brain split due to seizures. Set up a screen where words flashed to RVF or LVF.

Question 18

What does it mean that the brain hemispheres are contralateral?

Answer 18

The right hemisphere controls the left side of the body and the left hemisphere controls the right side of the body.

Question 19

Why is vision different in regards to lateralisation?

Answer 19

Both contralateral and ipsilateral.
RVF goes to LH, LVF goes to RH. Unless binocular vision (both used).

Question 20

Describe the findings of Sperry’s research?

Answer 20

When word flashed to LVF (RH) could not say the word but could pick it up with left hand.
When word flashes to RVF (LH) could both say the word and pick up with right hand.

Question 21

What did Sperry tell us about lateralisation?

Answer 21

Language may be lateralised to the left hemisphere. Things like vision, motor ability etc in both.