Hemispheric Lateralisation & Localisation of Function Flashcards
A2 content
What is the idea of localisation?
Particular parts of the brain are associated with particular functions and processes.
What is the idea of the brain being holistic?
The idea there isn’t specific areas for functions, the whole brain is used at the same time.
Name the four main lobes.
Parietal, frontal lobe, temporal lobe, occipital lobe.
What is the occipital lobe responsible for?
Sight (visual cortex).
What is the temporal lobe responsible for?
Sound (auditory cortex)
What is the parietal lobe responsible for?
Sensory perception and integration.
What is the frontal lobe responsible for?
Higher cognitive functions, memory, emotions, impulse.
Where is the motor cortex?
Frontal lobe
Where is the somatosensory area?
Parietal (senses)
Where is the Broca’s area?
Left of frontal lobe.
Where is Wernicke’s area?
Left temporal lobe.
What is Broca’s Aphasia?
Disorder characterised by problems producing speech with fluency.
What is Wernicke’s Aphasia?
Disorder characterised by problems with language comprehension.
What is the idea of lateralisation?
The two hemispheres (left and right) functions different in separate hemispheres.
What is the belief about language?
Localised to left hemisphere.
What research allowed us to understand lateralisation more?
Sperry- split brain participants.
Explain the procedure of Sperry.
11 Split Brain Participants (corpus callosum.
Had brain split due to seizures. Set up a screen where words flashed to RVF or LVF.
What does it mean that the brain hemispheres are contralateral?
The right hemisphere controls the left side of the body and the left hemisphere controls the right side of the body.
Why is vision different in regards to lateralisation?
Both contralateral and ipsilateral.
RVF goes to LH, LVF goes to RH. Unless binocular vision (both used).
Describe the findings of Sperry’s research?
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.
What did Sperry tell us about lateralisation?
Language may be lateralised to the left hemisphere. Things like vision, motor ability etc in both.
