Table 1.
Treatment schedule for chronically treated rats
| Group | Day 1–day 11 | Day 12 | ||
|---|---|---|---|---|
| 0 min | 20 min | 0 min | 20 min | |
| Control | Saline | Saline | Saline | Saline |
| Acute haloperidol | Saline | Saline | Saline | Haloperidol |
| Chronic haloperidol | Saline | Haloperidol | Saline | Haloperidol |
| Chronic MK 801 and chronic haloperidol (I) | MK 801 | Haloperidol | MK 801 | Haloperidol |
| Chronic MK 801 and chronic haloperidol (II) | MK 801 | Haloperidol | Saline | Haloperidol |
All rats received two injections per day, 20 min apart. Rats were killed on day 12, 40 min after the last injection.