Table 2.
Parameters used in the trace conditioning paradigms in young humans, rabbits, and rodents.
| Study | Age sensitive | CS duration (ms) | Stimulus type | Trace interval (ms) | US duration (ms) | Trials to Criterion/Asymptote | CR (%) |
|---|---|---|---|---|---|---|---|
| HUMAN | |||||||
| Finkbiner and Woodruff-Pak, 1991 | 400 | Tone (1 kHz) | 0 | 100 | 30 | 80 | |
| 400 | Tone (1 kHz) | 500 | 100 | 20 | 63 | ||
| 400 | Tone (1 kHz) | 800 | 100 | 41 | 46 | ||
| 400 | Tone (1 kHz) | 1100 | 100 | 66 | 47 | ||
| Yes | 400 | Tone (1 kHz) | 1400 | 100 | 64 | 47 | |
| 400 | Tone (1 kHz) | 1700 | 100 | 101 | 29 | ||
| RABBIT | |||||||
| Graves and Solomon, 1985 | Yes | 450 | Tone (1.2 kHz) | 500 | 50 | 700 | 75 |
| Woodruff-Pak et al., 1987 | Yes | 250 | Tone | 500 | 100 | 378 | 89 |
| Moyer et al., 2000 | Yes | 100 | Tone (6 kHz) | 500 | 150 | 733 | 80 |
| Rose et al., 2007 | 200 | Tone (1 kHz) | 300 | 100 | 810 | 75 | |
| 200 | Tone (1 kHz) | 400 | 100 | 720 | 25 | ||
| 200 | Tone (1 kHz) | 500 | 100 | 1500 | 20 | ||
| RODENTS | |||||||
| Matthews et al., 2009 | No | 250 | Tone | 250 | 50 | 150 | 80 |
| Weiss et al., 1999 | 250 | Tone (8 kHz) | 250 | 100 | 350 | *70 | |
| 250 | Tone (8 kHz) | 500 | 100 | 500 | *20 | ||
*
Reported as percent late CR.