果冻传媒

Audiogram of the pocket gopher (Geomys bursarius)

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Data from: Heffner, R.S., and Heffner, H.E. (1990) Vestigial hearing in a fossorial mammal, the pocket gopher, (Geomys bursarius).Hearing Research, 46, 239-252.

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Absolute thresholds (in dB re 20 碌N/m²) for four pocket gophers (designated A through D

听 Frequency (in kHz)	Individual Thresholds (in dB)				听 Average
	A	B	C	D
.0315	>88	听	听	听	听
.045	>85	听	听	85	>85
.063	89	听	听	83	86
.125	87	听	听	64	76
.250	62	听	听	62	62
.500	42	听	听	47	45
1	47	听	听	38	43
2	28	20	听	23	24
4	36	听	38	33	36
8	58	听	听	58	58
16	81	听	67	75	74
32	88	听	听	79	84
45	>89	听	听	>89	>89

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Lowest and highest frequencies audible at sound

pressure levels (SPL) ranging from 30 to 70 dB SPL

SPL (in dB)	Lowest audible frequency (in kHz)	Highest audible frequency (in kHz)
70	.170	13.7
60	.270	8.7
50	.410	6.2
40	1.1	4.5
30	1.6	2.8

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Additional Parameters:

Body weight = 175 g

Functional interaural distance= 111 碌s

(Time required for sound to travel around the head from one auditory meatus to the other.)

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Comments: Threshold values taken from original data.