Table 3.
Relationships of dopamine receptor binding potential (BPND) and stop-signal task performance variables
| Region of interest | SSRT |
GoRT |
||
|---|---|---|---|---|
| r | p | r | p | |
| D1-type BPND | ||||
| Whole striatum | −0.624 | 0.003 | −0.425 | 0.062 |
| Limbic striatum | −0.342 | 0.139 | −0.399 | 0.082 |
| Associative striatum | −0.548 | 0.012 | −0.343 | 0.138 |
| Sensory motor striatum | −0.527 | 0.017 | −0.332 | 0.153 |
| Midbrain | −0.373 | 0.106 | 0.153 | 0.519 |
| D2-type BPND | ||||
| Whole striatum | −0.478 | 0.021 | −0.035 | 0.875 |
| Limbic striatum | −0.308 | 0.153 | 0.085 | 0.700 |
| Associative striatum | −0.544 | 0.007 | −0.016 | 0.942 |
| Sensory motor striatum | −0.419 | 0.046 | −0.112 | 0.610 |
| Midbrain | −0.327 | 0.137 | 0.041 | 0.851 |
Partial correlation coefficients for the relationships between dopamine receptor availability (BPND) and stop-signal task performance variables, controlling for the effects of sex and age. Significant relationships are highlighted in bold.