2.1.7—Localization of function
- Syllabus
- First assessment 2027
- Objective
- 2.1.7
- Level
- SL
Localisation is a claim about specialised contribution
Localisation of function proposes that particular brain regions contribute more to some functions than others. Modern evidence often shows networks and interaction rather than one isolated “centre”.
Evidence can come from lesions, stimulation, imaging or task comparisons. Strong interpretation requires a clear contrast and awareness that damage can cause reorganisation or broader network disruption.
If a lesion is followed by impaired language production, it supports a contribution of the damaged network; it does not prove that every language process is stored in one spot.
Activation is not the same as exclusive control. Separate localisation, lateralisation and network-level explanation.