Hemispheric Lateralisation

Question 1

What is meant by hemispheric lateralisation? (1)

Answer 1

*Hemispheric lateralisation in the brain refers to how the brain is split into two halves called the left and right hemisphere, both responsible for different functions and roles.

Question 2

What is the left hemisphere responsible for? (2)

Answer 2

• *responsible for language and logic
• the two main lang centres are located in LH
• brocas area which is responsible for production of language
• and wernickes area, responsible for understanding language

Question 3

What is the right hemisphere responsible for? (2)

Answer 3

• *responsible for creativity and recognition of faces, places and objects
• can only produce basic words and phrases
• but contributes to emotional context of whats being said

Question 4

What is meant by contralateral wiring?

Answer 4

• *hem lat also states brain has contralateral wiring
• *LH receives info from RVF so controls right side of body
• *RH receives info from LVF so controls left side of body
• many functions are not lateralised; such as vision, motor and somatosensory cortex as they occur in both hemispheres

Question 5

What are the three AO3 PEELS to evaluate hemispheric lateralisation?

Answer 5

RTS by Sperry - split brain patients
RTC by patient EB - damaged LH
Discussion - low pop val