What causes long-term potentiation (LTP) at a glutamatergic synapse during associative learning?

💡 Explanation

LTP, a form of synaptic plasticity, requires co-activation of NMDA receptors by glutamate and postsynaptic depolarization because magnesium block is removed, therefore calcium influx triggers intracellular signaling cascades that strengthen the synapse, rather than inhibition or changes to sodium channels.

• What happens to bacterial antibiotic resistance when a mutation deactivates a cell's own DNA mismatch repair mechanism?
• Which mechanism explains why chronic alcohol consumption increases the risk of drug-induced liver damage?
• If a patient with a known bee sting allergy is exposed and experiences rapidly declining blood pressure, which consequence results from widespread mast cell degranulation?
• A patient experiences an ischemic stroke, and tPA is administered to restore blood flow. Which consequence follows regarding the ischemic penumbra?
• A patient experiences a ruptured Achilles tendon during a basketball game. Which compensatory biomechanical adaptation is most likely to occur acutely to maintain propulsion?
• Why does the brainstem trigger increased respiration when the ventilation-perfusion ratio decreases significantly in a lung region affected by localized pneumonia?