Table 3.
Effects of α2-Adrenoceptor and µ-Opiate Receptor Agonists on Arousal and Pupil Diameter
| Arousal | Pupil Diameter | ||
|---|---|---|---|
| Pre-synaptic Action Dominant | |||
| Man | α2-adrenoceptor agonist | ↓ [182] | ↓ [39, 76, 184, 341, 379] |
| µ-opiate receptor agonist | ↓ [131] | ↓ [225, 286, 334, 343, 344, 345] | |
| Dog | α2-adrenoceptor agonist | ↓ [84] | ↓ [396] |
| µ-opiate receptor agonist | ↓ [502] | ↓ [396] | |
| Rabbit | α2-adrenoceptor agonist | no information available | ↓ [8] |
| µ-opiate receptor agonist | ↓ [278] | ↓ [450] | |
| Post-synaptic Action Dominant | |||
| Cat | α2-adrenoceptor agonist | ↑ [245] | ↑ [231, 232] |
| µ-opiate receptor agonist | ↑ [95, 221] | ↑ [80] | |
| Rat | α2-adrenoceptor agonist | ↑ [357] | ↑ [137, 166, 169, 175, 231] |
| µ-opiate receptor agonist | ↑ [12, 484] | ↑ [224] | |
| Mouse | α2-adrenoceptor agonist | ↑ [159] | ↑ [167, 168] |
| µ-opiate receptor agonist | ↑ [215] | ↑ [230] | |
References are indicated in square brackets.