| AZ | Active zone |
| CaV | Voltage-dependent Ca2+ channel |
| DCV | Dense-core vesicle |
| EM | Electron microscopy |
| IHC | Inner hair cell |
| KD/KO | Knock-down/-out |
| MT | Microtubule |
| OHC | Outer hair cell |
| PSD | Postsynaptic density |
| RRP | Readily-releasable pool |
| SGN | Spiral ganglion neuron |
| SV | Synaptic vesicle |