Audiogram of the potto (Perodicticus potto)
Data from: Heffner, H., and Masterton, B. (Hearing in primitive primates: Slow loris (Nycticebus coucang) and potto (perodicticuspotto). Journal of Comparative and Physiological Psychology, 71, 175-182.
Absolute thresholds (in dB re 20 µN/m2) for twopottos (designated A and B)
Frequency(in kHz) |
Individual Thresholds(in dB) | Average |
|
| A | B | ||
|
.125 |
64 |
— |
64 |
|
.250 |
40 |
30 |
35 |
|
.500 |
43 |
18 |
30 |
|
1 |
29 |
9 |
19 |
|
2 |
28 |
8 |
18 |
|
4 |
34 |
14 |
24 |
|
8 |
15 |
-5 |
5 |
|
16 |
4 |
-2 |
1 |
|
32 |
14 |
14 |
14 |
|
42 |
75 |
— |
|
|
45 |
— |
66 |
|
|
Average high-frequency point for A & B is 70 dB at 44 kHz |
|||
Lowest and highest frequencies audible at sound
pressure levels (SPL) ranging from 30 to 70 dB SPL
Additional Parameters:
Body weight = 700 g
Functional interaural distance= 218 µs
(Time required for sound to travel around the head from one auditory meatus to the other.)
|
SPL (in dB) |
Lowest audible frequency (in kHz) |
Highest audible frequency (in kHz) |
|
70 |
.110 |
44 |
|
60 |
.135 |
42 |
|
50 |
.170 |
39 |
|
40 |
.220 |
37 |
|
30 |
.500 |
35 |
Body weight = 700 g
Functional interaural distance= 218 µs
(Time required for sound to travel around the head from one auditory meatus to the other.)
Comments: Threshold values taken from original data.