| MSN | medium spiny neurons |
| Slc | solute carrier family |
| PCA | principal component analysis |
| AHC | agglomerative hierarchical clustering |
| FPKM | fragments per kilobase of transcript per million mapped reads |
| VTA | ventral tegmental area |
| NAcc | nucleus accumbens |
| PFC | prefrontal cortex |
| W | winners |
| C | controls |