| Normal |
| Huntington’s
disease |
| Cerebral cortex |
| Cerebral cortex |
| Striatum |
| Striatum |
| SNc |
| SNc |
| GPe |
| GPe |
| thalamus |
| thalamus |
| STN |
| STN |
| GPi/SNr |
| GPi/SNr |
| Brainstem/spinal
cord |
| Brainstem/spinal
cord |