Table 3 Time of elements of behaviour categorised as vigilance (s) in response to the test signals (means ± SD)
Phase | Volcano (Volcanic eruption sound) | Thunder (Thunderclap sound) | Sea storm (The sound of roaring waves and the wind during a sea storm) |
|---|---|---|---|
Snoring | |||
Before | 0.00 ± 0.00 ax | 0.76 ± 0.72 ay | 2.07 ± 1.38 az |
During | 0.00 ± 0.00 ax | 0.31 ± 0.48 ax | 2.07 ± 0.86 ay |
After | 0.00 ± 0.00 ax | 0.46 ± 0.51 ay | 3.38 ± 1.26 az |
Vocalisation | |||
Before | 0.46 ± 0.51 ax | 0.00 ± 0.00 ay | 0.15 ± 0.37 axy |
During | 0.76 ± 0.43 ax | 0.00 ± 0.00 ay | 0.23 ± 0.43 axy |
After | 0.76 ± 0.59 ax | 0.69 ± 0.48 bx | 0.92 ± 0.64 bx |
High head position | |||
Before | 0.23 ± 0.43 ax | 0.61 ± 0.51 ay | 1.00 ± 0.00 ay |
During | 0.00 ± 0.00 ax | 0.00 ± 0.00 bx | 1.46 ± 1.05 ay |
After | 0.00 ± 0.00 ax | 0.00 ± 0.00 bx | 1.00 ± 0.58 ay |
High tail position | |||
Before | 1.23 ± 0.72 ax | 1.85 ± 1.07 ax | 4.92 ± 1.32 ay |
During | 0.54 ± 0.66 bx | 1.23 ± 0.60 az | 3.38 ± 1.42 by |
After | 1.46 ± 0.78 ax | 1.62 ± 0.87 ax | 3.15 ± 1.82 by |
Sticking together | |||
Before | 0.00 ± 0.00 ax | 1.31 ± 0.75 ay | 2.54 ± 1.13 az |
During | 0.00 ± 0.00 ax | 0.54 ± 0.52 by | 1.69 ± 0.95 bz |
After | 0.31 ± 0.48 ax | 0.85 ± 0.69 bx | 1.85 ± 0.90 by |