Localisation of function in the brain

Question 1

Localisation theory

Answer 1

Broca and Wernicke discovered that specific areas in the brain are associated with physical and psychological functions. Refer to it as the localisation of functions and if one part is damaged the function associated with that part is also damaged

Question 2

Holistic theory on the brain

Answer 2

All parts of the brain are involved in the processing of thought and action.

Question 3

Hemisphere of the brain

Answer 3

Some of our functions are dominated by particular hemispheres (lateralisation). Activity on left hand side of the body is controlled by the right hemisphere while activity of the right hand side is is controlled by the left hand side.

Question 4

Cerebral cortex is subdivided into 4 lobes what are they

Answer 4

Frontal lobe
Parietal lobe
Occipital lobe
Temporal lobe

Question 5

Frontal lobe

Answer 5

Motor cortex which controls voluntary movements in the opposite side of the body .

Damage to this area= loss of control over fine movement

Question 6

Parietal lobe

Answer 6

Somatosensory area separated from the motor area by a valley called central sulcus. Somatosensory is responsible for sensory information from the skin

Question 7

Occipital lobe

Answer 7

Visual cortex where each eye sends info from the right visual field to the left visual cortex and from the left visual field to the right visual cortex.

Damage to left visual cortex causes blindness in the right eye and vice versa.

Question 8

Temporal lobe

Answer 8

Auditory area which analyses speech based info. Damage to this produce partial hearing loss. More extensive the damage=more extensive the loss.

Question 9

Broca’s area

Answer 9

Located in the left frontal lobe and is responsible for speech production .

Damage to this causes slow speech and lacks fluency = Broca’s aphasia

Question 10

Wernicke’s area

Answer 10

Located in the left temporal lobe and is responsible for language comprehension.

Damage to this causes Wernicke’s aphasia where people will produce nonsense words