4.5 language centres in brain + ao3

language centres - location on hemisphere

broca and wernicke area is responsible for languages, located on the left hemisphere

what are broca and wernicke responsible for?

broca speech production

wernicke speech comprehension

strength of localisation (petersen)

P:one strength is that there is research evidence supporting the idea that specific areas of the brain are responsible for specific functions.

E: Petersen et al. (1988) used brain scans and found that Wernicke’s area was active during a listening task, while Broca’s area was active during a reading task.

E: During listening, participants had to understand language, which is associated with Wernicke’s area. During reading, participants had to produce words, associated with Broca’s area.

L: This supports localisation because it demonstrates that different areas of the brain are associated with different language functions, providing evidence for the theory

strength/w - clive

P: Clive Wearing’s case supports localisation of function.

E: Viral infection damaged his hippocampus, affecting his episodic and semantic memory, but his procedural memory remained intact (e.g. playing piano).

E: This suggests different types of memory are controlled by different brain areas.

L: However, it is a single case study, so findings cannot be generalised. It provides supporting, not definitive, evidence for localisation.

weakness - criticised as biologically deterministic

P: A weakness is that localisation can be seen as biologically deterministic.

E: It suggests that behaviour and mental processes are determined by biological factors, such as specific brain areas, rather than environmental influences.

E: This can underestimate the role of learning and experience in shaping behaviour.

L: Therefore, localisation may provide an overly simplistic explanation of complex human behaviour.

plasticity can also chalkenge localisation