Table 2.
Number and percentage of responsive and non-responsive neurons in each recording area before and after morphine or NS administration
| Pre | Post | |||||
| Treatment | Brain areas | n | Responsive | Non-responsive | Responsive | Non-responsive |
| Morphine | SI | 62 | 51 (82%) | 11 | 41 (66%)* | 21 |
| VPL | 53 | 50 (94%) | 3 | 30 (57%)*** | 23 | |
| ACC | 42 | 21 (50%) | 21 | 10 (24%)* | 32 | |
| MD | 61 | 31 (51%) | 30 | 11 (18%)*** | 50 | |
| NS | SI | 69 | 57 (83%) | 12 | 55 (80%) | 14 |
| VPL | 51 | 44 (86%) | 7 | 47 (92%) | 4 | |
| ACC | 42 | 22 (52%) | 20 | 19 (45%) | 23 | |
| MD | 58 | 28 (48%) | 30 | 26 (45%) | 32 | |
* P < 0.05, *** P < 0.001, Chi-square test, compared with pre-treatment.