Table 1.
Preoperative and Postoperative Retention and New Learning
| Case | Preoperative | Preoperative % errors | Postoperative % errors | Postoperative New Learning | |||||
|---|---|---|---|---|---|---|---|---|---|
| Total Cycles of training to criterion | Set A | Set B | Set C | Set A | Set B | Set C | Set D | ||
| Errors to criterion | Trials to criterion | ||||||||
| Con1 | 6 | 7 | 8 | 22 | 10 | 8 | 19 | 153 | 5 |
| Con2 | 7 | 11 | 13 | 21 | 8 | 8 | 16 | 156 | 6 |
| Con3 | 10 | 11 | 24 | 27 | 13 | 25 | 30 | 323 | 11 |
| Con4 | 15 | 11 | 14 | 32 | 17 | 15 | 38 | — | — |
| Con5 | 15 | 16 | 21 | 25 | 17 | 15 | 24 | 163 | 6 |
| Mean | 10.6 | 11.2 | 16 | 25.4 | 13 | 14.2 | 25.4 | 198.8 | 7 |
| MD4 | 8 | 17 | 15 | 28 | 14 | 12 | 30 | 337 | 12 |
| MD5 | 15 | 19 | 15 | 26 | 18 | 19 | 24 | 274 | 10 |
| MD6 | 10 | 10 | 18 | 27 | 15 | 26 | 28 | 578 | 19 |
| Mean | 11 | 15.3 | 16 | 27 | 15.6 | 19 | 27.3 | 396.3 | 13.7 |
The data shown are the total number of cycles of 6 d of training to reach the performance criterion of more than 85% correct across three consecutive trials of set A, the number of preoperative and postoperative retention errors made during the one-trial retrieval tests for set A (presented three times in every cycle of 6 d of training), set B (presented twice), and set C (presented once), and during postoperative new learning of set D, the total number of errors made (excluding the first trial) and number of trials required to reach the criterion of 85% across three consecutive trials for control monkeys (CON1–CON5) and monkeys with MDmc lesions (MD4–MD6).