7 Functional organisation of cerebral cortex

Question 1

Where are the sensory primary projection areas? (5)

Answer 1

Gen: post central gyrus.
Visual: calcarine sulcus.
Hearing: heschl's gyrus.
Smell: uncus.
Taste: inferior postcentral gyrus.

Question 2

Where are the premotor and supplementary motor areas?

Answer 2

Anterior to precentral sulcus.

Premotor: on lateral surface.
Supplementary: medial surface.

Question 3

Where is the damage if the symptoms are agnosia or apraxia?

Answer 3

Agnosia: secondary sensory areas.

Apraxia: secondary motor areas.

Question 4

What is the function of the parieto-temporal cortex?

Answer 4

Integrates information of different modalities.

Memory.

Question 5

What is the function of the prefrontal cortex?

Answer 5

Regulates moods and feelings.

Involved in higher order cognition - conceptualisation, planning, judgement.

Question 6

What is the lateralisation of function in the auditory cortex?

Answer 6

Dominant hemisphere: linguistic.

Non-dominant: spacial awareness.

Question 7

Distinguish between the aphasia produced by damage to Broca’s and Wernicke’s areas.

Answer 7

Broca: expressive, production.

Wernicke: receptive, understanding.