| CxCL-1 | chemokine (C-X-C motive) ligand 1 |
| DBS | deep brain stimulation |
| HFS | high-frequency stimulation |
| IL | interleukin |
| MCP-1 | monocyte chemotactic protein-1 |
| MLR | mesencephalic locomotor region |
| PPAR-γ | peroxisome proliferator-activated receptor gamma |
| tDCS | transcranial direct-current stimulation |
| TMS | transcranial magnetic stimulation |