. Author manuscript; available in PMC: 2010 Jan 1.

Published in final edited form as: Horm Behav. 2008 Nov 1;55(1):217–227. doi: 10.1016/j.yhbeh.2008.10.006

Table 3.

Spectral Properties, Buzzes

	Time				Statistics

	Day 6 (n = 9)	Day 8 (n = 10)	Day 10 (n = 9)	Day 21 (n = 9)^*	ANOVA

1^st buzz pitch (kHz)
Mean	4.32 ± 0.22	4.61 ± 0.06	4.64 ± 0.07	4.80 ± 0.07	F_3,9 = 2.57, P = 0.079
CV	0.09 ± 0.02^a	0.06 ± 0.01^a,b	0.05 ± 0.01^a,b	0.02 ± 0.00^b	F_3,9 = 3.90 P = 0.022

1^st buzz FM (degrees)
Mean	49.21± 2.06^a	44.26 ± 2.11^b	41.43 ± 2.48^b	32.76±1.71^c	F_3,9 = 20.38, P < 0.001
CV	0.11 ± 0.01	0.14 ± 0.01	0.11 ± 0.01	0.14 ± 0.01	F_3,9 = 3.96, P = 0.021

1^st buzz entropy
Mean	−4.33 ± 0.20^a	−4.41 ± 0.14^a	−4.56 ± 0.14^a	−5.13± 0.07^b	F_3,9 = 6.26, P = 0.003
CV	−0.11 ± 0.03	−0.09 ± 0.01	−0.06 ± 0.01	−0.04 ± 0.01	F_3,9 = 2.64, P = 0.073

1^st buzz pitch goodness
Mean	148.47±4.71^a	128.70 ± 6.72^b	118.77 ± 8.65^b	90.51±8.65^c	F_3,9 = 21.26, P < 0.001
CV	0.19 ± 0.03	0.20 ± 0.02	0.14 ± 0.01	0.18 ± 0.03	F_3,9 = 2.05, P = 0.135

2^nd buzz pitch (kHz)
Mean	4.05 ± 0.17	4.27 ± 0.04	4.26 ± 0.05	4.45 ± 0.04	F_3,9 = 2.84, P = 0.060
CV	0.06 ± 0.02	0.05 ± 0.01	0.04 ± 0.00	0.02 ± 0.00	F_3,9 = 2.36, P = 0.098

2^nd buzz FM (degrees)
Mean	54.92 ± 1.49	54.09 ± 1.49	53.24 ± 1.29	51.06± 2.55	F_3,9 = 1.49, P = 0.245
CV	0.08 ± 0.02	0.08 ± 0.01	0.10 ± 0.01	0.09 ± 0.01	F_3,9 = 0.92, P = 0.445

2^nd buzz entropy
Mean	−4.89 ± 0.18^a	−5.12 ± 0.08^a	−5.07 ± 0.11^a	−5.62± 0.05^b	F_3,9 = 7.81, P < 0.001
CV	−0.08 ± 0.02^a	−0.06 ± 0.01^a,b	−0.04 ± 0.01^a,b	−0.02 ±0.01^b	F_3,9 = 4.14, P = 0.017

2^nd buzz pitch goodness
Mean	127.80±8.59^a,b	133.14 ± 6.98^a	125.24± 6.18^a,b	102.38±7.84^b	F_3,9 = 3.92, P = 0.02
CV	−0.08 ± 0.02	−0.06 ± 0.01	−0.04 ± 0.01	−0.02± 0.01	F_3,9 = 1.47, P = 0.248

3^rd buzz pitch (kHz)
Mean	3.21 ± 0.09	3.35 ± 0.07	3.32 ± 0.05	3.36 ± 0.11	F_3,9 = 1.81, P = 0.174
CV	0.07 ± 0.01	0.07 ± 0.01	0.05 ± 0.01	0.06 ± 0.02	F_3,9 = 1.41, P = 0.266

3^rd buzz FM (degrees)
Mean	54.92 ± 3.19	55.59 ± 3.39	54.47 ± 3.32	54.64± 3.02	F_3,9 = 0.12, P = 0.945
CV	0.09 ± 0.04	0.06 ± 0.01	0.05 ± 0.01	0.05 ± 0.01	F_3,9 = 0.69, P = 0.571

3^rd buzz entropy
Mean	−4.34 ± 0.16	−4.49 ± 0.16	−4.59 ± 0.15	−4.52 ± 0.11	F_3,9 = 1.23, P = 0.322
CV	−0.14 ± 0.05	−0.06 ± 0.01	−0.05 ± 0.01	−0.05 ± 0.01	F_3,9 = 2.79, P = 0.065

3^rd buzz pitch goodness
Mean	184.40±14.78	192.49 ± 19.88	193.68 ± 18.66	201.89±20.41	F_3,9 = 1.70, P = 0.196
CV	0.23 ± 0.04^a	0.11 ± 0.02^b	0.11 ± 0.02^b	0.13±0.03^a,b	F_3,9 = 4.07, P = 0.019

All values are mean ± SEM. CV = Coefficient of Variation (SD/mean). FM = frequency modulation. Entropy and pitch goodness are unitless. Different superscript letters denote significant differences across a row. Across a row, groups with the same letter do not significantly differ from one another. Lack of letters indicates that no significant differences were found.

N is 8 for 3^rd buzz, Day 21.