Table 1.
Experimental subjects.
| Monkey | Age (years) | Sex | DRST Spatial Span | |
|---|---|---|---|---|
| Young: | PIL | 6.8 | M | – |
| PIE | 6.9 | M | – | |
| PIK | 8.2 | M | – | |
| AM299 | 8.6 | F | 2.50 | |
| AM296 | 8.8 | M | 2.22 | |
| AM289 | 9 | M | 3.05 | |
| AM255 | 9.5 | F | 3.42 | |
| AM295 | 10.9 | M | 2.27 | |
| AM254 | 11.4 | F | 2.40 | |
| Middle aged: | AM321c | 13.4 | M | 3.61 |
| AM278 | 15.3 | F | 2.31 | |
| AM288 | 16 | M | 2.22 | |
| AM351c | 16.4 | F | 1.94 | |
| AM285 | 17 | F | 2.14 | |
| AM350c | 17.3 | F | 2.92 | |
| AM340 | 17.6 | F | 2.12 | |
| AM297 | 18.1 | M | 2.26 | |
| AM265L | 18.2 | F | 1.84 | |
| AM272L | 18.2 | F | 2.32 | |
| AM274 | 19 | M | 2.31 | |
| AM342c | 19.2 | F | 2.94 | |
| AM279 | 19.5 | M | 2.43 | |
| AM271L | 20 | F | 1.95 | |
| AM263L | 20.3 | F | 2.02 | |
| AM311c | 20.3 | M | 3.19 | |
| AM314x | 20.8 | M | 2.71 | |
| AM264L | 20.9 | F | 2.07 | |
| Aged: | AM270L | 21 | F | 2.06 |
| AM266L | 21.1 | F | 2.06 | |
| AM286 | 22.4 | F | 2.1 | |
| AM282 | 23.1 | M | 2.20 | |
| AM281 | 23.2 | M | 2.23 | |
| AM276 | 24.4 | M | 2.12 | |
| AM356 | 24.8 | M | 1.99 | |
| AM284 | 25.5 | M | 2.28 | |
| AM283 | 26.4 | M | 2.04 | |
| AM 298 | 26.8 | M | 2.38 | |
| AM355 | 28.4 | M | 2.08 | |
| AM034L | 29.5 | M | 2.18 | |