Long $-$ term $($days$,$ weeks, years$)$ storage of memory 'traces' in the brain requires activation of $$ and coincidence between $$

gene transcription, a reinforcement signal and postsynaptic activity.

protein translation, pre$-$ and postsynaptic neural activity

gene transcription, glutamate release and postsynaptic depolarization

protein translation, glutamate release and postsynaptic depolarization