Synapse strengthening

1. Synaptic transmission vs. synaptic plasticity (Nootropic Key Ideas)
2. NMDA Receptors vs. GABA Receptors (Neuroscience Tips)
3. Long-Term Potentiation (LTP) vs. Long-Term Depression (LTD) (Neuroscience Tips)
4. Synaptic plasticity vs. synaptic pruning (Nootropic Key Ideas)
5. Neuronal excitability vs. synaptic plasticity (Nootropic Key Ideas)
6. Neurotransmitter release vs. retrograde signaling (Nootropic Key Ideas)