localisation of function

Question 1

Broca

Answer 1

studied patients with lesions in left and right hemispheres. Could understand but not speak. Shows speech and language centre in left frontal lobe.

Question 2

Wernicke

Answer 2

studied patients with brain damage who could speak but not understand. Neural loops between Broca’s and Wernicke’s areas. Shows understanding is in upper posterior left temporal lobe.

Question 3

Phineas Gage

Answer 3

pole through head. Survived but personality changed. Damage to one area affected one function. Support for localisation of function.

Question 4

Peterson et al

Answer 4

brain scans to demonstrate how Wernicke’s area was active during a listening task + Broca’s active during reading task. Shows different areas have different functions.

Question 5

Lashley

Answer 5

Equipotentiality. Removed 10-15% of rats brains while they completed maze task. No area was more significant for the function. All brain is needed. Other explanations for localisation.