Figure 1
Positioning of the radar device at the bottom of the aluminium frame.
Figure 2
The complete apparatus.
Figure 3
Position of the clock and acquisition window.
Figure 4
Spectral analysis of data from Test 1. The peak at 20 bins corresponds to 60 seconds (1 bin = 3 sec). Power values on the y-axis; x-axis is periods (in seconds) in logarithmic scale.
Figure 5
Screening of the metronome and position of the apparatus and acquisition window.
Table 1
Means of the three parts of the recording interval and statistical results.
| RADAR 2 | RADAR 5 | ||
| 17.02 | F (2,177) = 0.27, p = 0.7671 | 12.80 | F (2,177) = 0.95, p = 0.3878 |
| 16.85 | 13.27 | ||
| 16.83 | 12.78 | ||
| RADAR 12 | RADAR 9 | ||
| 18.53 | F (2,177) = 0.44, p = 0.6416 | 16.27 | F (2,177) = 0.83, p = 0.4382 |
| 18.93 | 16.13 | ||
| 18.78 | 15.80 | ||
| RADAR 10 | RADAR 11 | ||
| 15.07 | F (2,177) = 2.5, p = 0.0851 | 15.22 | F (2,177) = 0.83, p = 0.4359 |
| 15.18 | 15.55 | ||
| 14.67 | 15.48 | ||
Figure 6
Setup for video-recording of the animal.
Table 2
Agreement between the behavioural categories recorded by the human observers and those recorded by the radar device.
| Observer 1 | Observer 2 | Observer 1 | Mean | |
| radar7 | radar7 | radar6 | ||
| LOCOMOTION | 100% | 99% | 99% | 99.3 % |
| CLIMBING | 100% | 93% | 96.5 % | |
| STRETCHING | 100% | 100% | 100% | 100.0 % |
| DIGGING | 100% | 85% | 59% | 81.3 % |
| RISING/LOWERING | 100% | 91% | 86% | 92.3 % |
| TURNING | 98% | 78% | 87% | 87.7 % |
| BITING | 0% | 0% | 0 % | |
| DRINKING/EATING | 0% | 0% | 0% | 0 % |
| GROOMING | 13% | 46% | 7% | 22.0 % |
| SCRATCHING | 37% | 50% | 25% | 37.3 % |
| HEAD MOVEMENTS | 54% | 63% | 44% | 53.7 % |
Figure 7
Spectral analysis of data from Test 4. Power values on the y-axis; x-axis is periods (in minutes) in logarithmic scale.