Which term refers to the removal of unused neural connections?

• A. Synaptic pruning
• B. Neurogenesis
• C. Myelination
• D. Synesthesia

Answer: (A)

Synaptic pruning is the process of trimming away neural connections that aren’t used, refining brain networks to be more efficient. During development the brain overproduces synapses, and experiences guide which connections are kept. The frequently used pathways are strengthened, while weaker or unused ones are removed, helping signals travel more quickly and with less noise. This refinement continues into adolescence and can be influenced by experience and activity.

Neurogenesis would mean the creation of new neurons, not removal. Myelination refers to the coating of axons to speed up transmission, not pruning. Synesthesia is a perceptual blending phenomenon, unrelated to removing connections.