A stroke has destroyed neurones in a region deep within one of a patient's cerebral hemispheres. Doctors are considering treatments to restore the function of this region.
Explain why restoring the function of this region is difficult.
111 exam-style questions on Edexcel GCSE Biology 2.3 The nervous system and brain, covering 2.3.1 Structures and functions of the brain, 2.3.2 Imaging brain function with scanning, 2.3.3 Limitations in treating nervous system damage, 2.3.4 Neurones and impulse transmission, and 2.3.5 Structure and function of a reflex arc. Each one has a worked solution and a mark scheme showing where the marks go.