Long Term potentiation and depression underlie hebbian plasticity

Hebbian plasticity refers to structural changes in brain based on synapse strength modifications, as opposed to entirely new synapses and neurons being formed. In light of this, long-term potentiation and depression provide the biochemical frameworks for varying synaptic strength. However, Hebbian plasticity can’t be the only mechanism for altering brain structure, as highlighted by the dilemma of psychological continuity of prolonged periods of time.