Table 1 Summary statistics and comparison of key characteristics of the external/middle ear transfer function (EMTF) of humans (Homo) and panins (Pan).

From: Auditory thresholds compatible with optimal speech reception likely evolved before the human-chimpanzee split

 

Humans (Homo)

Panins (Pan)

phumans vs. panins

Frequency First Maximum

1.1 [0.6, 1.3]

0.9 [0.6, 1.3]

0.678

Magnitude First Maximum

− 18.7 [− 24.5, − 7.8]

− 11.7 [− 20.6, − 1.3]

0.081

Frequency First Minimum

2.4 [1.3, 3.9]

1.9 [1.3, 3.1]

0.494

Magnitude First Minimum

− 22.8 [− 35.2, − 15.4]

− 18.4 [− 29.5, − 10.1]

0.096

Frequency Second Maximum

4.0 [3.5, 4.5]

2.9 [2.6, 3.2]

 < 0.001

Magnitude Second Maximum

− 19.4 [− 32.4, − 5.6]

− 12.2 [− 17.1, − 5.0]

0.038

Frequency Second Minimum

–

4.3 [3.7, 5.6]

–

Magnitude Second Minimum

–

− 27.7 [− 37.7, − 22.6]

–

Frequency Third Maximum

–

6.7 [4.8, 9.0]

–

Magnitude Third Maximum

–

− 24.0 [− 38.6, − 5.0]

–

  1. Frequency (in kHz) and magnitude (in dB). Given values are the average and in brackets the minimum and maximum values.
  2. P values below 0.05 indicate significant differences (bold).
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