Following a nerve injury, a rehabilitation program aims to restore function. Which mechanism explains why repetitive task practice enhances motor recovery in nervous system?

💡 Explanation

Repetitive task practice enhances motor recovery because it promotes Hebbian plasticity, specifically enhanced long-term potentiation (LTP) at synapses involved in the practiced movement. This strengthens the neural pathways. Therefore, LTP increases synaptic efficacy, rather than reducing glial cell activation, increasing inhibition, or decreasing neuronal excitability, which would hinder motor recovery.

• Why does chronic sun exposure accelerate skin aging regarding elastin function?
• Why does tanning, an increase in skin pigmentation after UV exposure, offer limited protection against sunburn compared to using sunscreen with a high SPF?
• Why does consuming large quantities of poorly digestible plant fiber lead to increased gas production and bloating in the digestive tract?
• Why does asthma-induced bronchoconstriction worsen upon allergen exposure, even with a beta-agonist inhaler?
• Why does increased vascular permeability occur during anaphylaxis following exposure to an allergen such as bee venom?
• A patient with a genetic mutation produces abnormal fibrinogen. If this patient experiences a cut, which consequence follows?