localisation of function in the brain 2

Question 1

motor area

what?
where?

Answer 1

• back of the frontal lobe
• control voluntary movement in the opposite side of the body
• damage to this area = loss of control over fine movements

Question 2

somatosensory area

what?
where?

Answer 2

• front both parietal lobes
• sensory info from the skin is represented
• the amount of somatosensory devoted to a particular body part denotes its sensitivity

Question 3

visual area

what?
where?

Answer 3

occipital lobe at the back of the brain

• each eye sends info from the right visual field to the left visual cortex
• damage to the left can cause subtle damage in right

Question 4

auditory area

what?
where?

Answer 4

• temporal lobe house the auditory area
• analyses speech info
• damage may produce partial hearing loss
• damage of Wernicke’s area may affect the ability to comprehend language

Question 5

the language area of the brain

Answer 5

• language = left side of the brain
• damage to Broca’s area = Broca’s aphasia = speech that is low and lacking in fluency

Question 6

speak but cant understand

Answer 6

• patients who had no problem producing language but severe difficulty understanding it
• Wernicke’s area in the left temporal lobe was responsible

Question 7

wernicke and broca

Answer 7

Just behind the auditory centre (in the left temporal lobe) is Wernicke’s area. It is used to interpret the meaning of speech. Damage to this area causes Wernicke’s (receptive) aphasia. This condition prevents people from being able to interpret speech properly and so start to produce nonsense words.

Broca’s area is in the left frontal lobe and is responsible for the production of speech. Damage to this area leads to Broca’s (expressive) aphasia which leads to slow speech which lacks fluency.