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Table 3 Frequency domain features for patients with dysphagia performing thin swallows

From: Dysphagia and its effects on swallowing sounds and vibrations in adults

 

Non-stroke

Stroke

A–P

S–I

Sounds

A–P

S–I

Sounds

Peak frequency (Hz)

11.68 ± 27.98

11.74 ± 14.58

304.0 ± 491.0

34.54 ± 97.57

14.94 ± 54.28

257.0 ± 433.4

Center frequency (Hz)

73.15 ± 113.9

54.60 ± 84.64

801.9 ± 682.6

199.3 ± 291.0

90.75 ± 184.6

895.9 ± 899.3

Bandwidth (Hz)

134.75 ± 211.4

92.45 ± 106.8

552.1 ± 562.0

344.2 ± 498.2

136.4 ± 265.6

697.3 ± 704.4

Wavelet entropy

0.905 ± 0.703

1.063 ± 0.707

1.185 ± 0.725

1.204 ± 0.870

1.171 ± 0.772

1.027 ± 0.776