For massed conditioning, subjects (n = 9) received three 10-min training trials in a single day, with each trial separated by a 10-min intertrial
interval during which the beaker was covered with the opaque sleeve.
A house light atop the back wall of the chamber provided general illumination except during food delivery and intertrial
Stimuli presentation and intertrial
intervals were controlled by Psych Toolbox software (Brainard, 1997), using a PC computer.
The median number of buried individuals and intertrial
variability were similar for comparisons of very coarse sand and very fine gravel (daytime) and of coarse sand and very coarse sand (nighttime) (Fig.
Next, the participant's attention was called to an intertrial
distracter task in the form of weather reports taken from screenshots generated from a weather site.
After the response phase, there was an intertrial
interval of 0.
Because the directions of the target were randomly presented, we did not consider the variation of the intertrial
interval for habituation effects.
Touching the S+ was followed by small portions of banana and a 6-s intertrial
5 s with a 0-s intertrial
interval using E-prime software.
intervals lasted for randomised periods of 15-45 s.
TLS has been shown to generate reliable data, with good intraclass correlation coefficients for same-day intertrial
and 6 to 10 d test-retest reliability in 127 women with osteoporosis with vertebral fractures .
Rats were run in groups of ten and spent the intertrial
interval (ITI) in small individual compartments.