A research group wants to investigate whether different small regions of the cerebrum carry out different functions.
The group plans to recruit patients through 12 hospitals. Each hospital expects to assess 250 patients with brain damage during the recruitment period. Previous records suggest that 0.4% of patients with brain damage have damage confined to one small region.
The group aims to obtain 30 case studies involving damage confined to one small region.
Evaluate whether this recruitment plan is likely to meet the aim. Explain why case studies involving damage to several regions would provide weaker evidence.
135 exam-style questions on OCR GCSE Biology 3.1 Coordination and control – the nervous system, covering 3.1.1 Structure of the nervous system, 3.1.2 Coordinated response, 3.1.3 The reflex arc, 3.1.4 Structure of the eye, 3.1.5 Defects of the eye, 3.1.6 Structure and function of the brain, 3.1.7 Difficulties of investigating brain function, and 3.1.8 Limitations in treating nervous system damage. Each one has a worked solution and a mark scheme showing where the marks go.