Table 1 The parameters of stimuli.

From: Acoustical cues for perception of emotional vocalizations in rats

 

Mean frequency

Duration

FM index

similar

M ± SD (kHz)

similar

M ± SD (ms)

similar

M ± SD (10−3)

PC

53.9 ± 7.4

33.4 ± 19.6

25.61 ± 25.78

DC

21.0 ± 0.9

703.4 ± 236.7

8.73 ± 6.04

Probe A

PC

53.9 ± 4.0

PC

36.6 ± 16.2

DC

7.22 ± 5.98

Probe B

PC

56.2 ± 8.1

DC

622.7 ± 287.1

PC

22.55 ± 20.95

Probe C

PC

54.5 ± 6.2

DC

683.0 ± 194.7

DC

12.34 ± 4.69

Probe D

DC

19.2 ± 2.8

PC

41.7 ± 22.1

PC

24.20 ± 24.45

Probe E

DC

20.3 ± 0.2

PC

35.9 ± 19.2

DC

11.07 ± 6.89

Probe F

DC

21.5 ± 2.2

DC

771.5 ± 309.0

PC

26.85 ± 22.25

  1. The mean ± standard deviation of mean frequency, duration and FM index in all stimulus categories: PC and DC stimuli, and six probe stimuli. Each probe stimulus had either PC-similar or DC-similar parameters in three acoustical features.