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Department of Psychology

Audiogram of the marmoset (Hapale jacchus)

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Data from: Seiden, H.R. (1958) Auditory acuity of the marmoset monkey (Hapale jacchus). Unpublished Doctoral Dissertation, Princeton University.

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Average absolute thresholds (in dB re 20 µN/m2) for five marmosets

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Frequency

(in kHz)

Average Threshold

(in dB)

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.100

41

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.200

31

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.300

19

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.500

13

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.700

4

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1

4

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2

0

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3

11

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4

18

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5

20

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7

-9

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10

-2

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15

9

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20

42

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25

53

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30

59*

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35

72**

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*Three animals

**One animal

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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

—

34

60

—

30

50

—

23

40

.105

20

30

.210

18


Additional Parameters:

Body weight = 340 g

Functional interaural distance= 170 µs

(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 table in Seiden 1957. Used shuttle box.