2.1.8—Neuroplasticity

Syllabus
First assessment 2027
Objective
2.1.8
Level
HL

Neuroplasticity lets experience reshape function

Neuroplasticity is the nervous system's capacity to change connections, representation or recruitment in response to development, learning or injury.

Change can involve synaptic strengthening, pruning or functional reorganisation. Sensitive periods may make some learning easier, but adult brains remain capable of adaptation; plasticity can also reinforce unhelpful patterns.

After repeated practice, a skill may recruit more efficient pathways. After injury, nearby regions may support a lost function, but recovery depends on damage, timing and rehabilitation.

Plasticity does not mean unlimited repair or that every change is beneficial. Identify the mechanism and the evidence for transfer to behaviour.