Skip to main content

Table 2 Time domain features for swallowing accelerometry signals

From: The effects of increased fluid viscosity on swallowing sounds in healthy adults

   Neutral position    Chin-tuck position  
Feature Water Nectar-thick Honey-thick Water Nectar-thick Honey-thick
   apple juice apple juice   apple juice apple juice
σ A-P 1.39 ±0.05 1.16 ±0.03 0.39 ±0.02 1.39 ±0.04 1.39 ±0.04 1.39 ±0.04
σ S-I 1.11 ±0.06 0.96 ±0.03 1.16 ±0.05 1.16 ±0.05 1.16 ±0.04 1.16 ±0.05
ν A-P -0.73 ±0.22 -1.39 ±0.23 -0.74 ±0.21 -2.31 ±0.43 -2.24 ±0.49 -1.31 ±0.42
ν S-I 0.28 ±0.32 0.14 ±0.37 -0.49 ±0.39 -0.13 ±0.31 -0.69 ±0.29 -0.54 ±0.37
ϖ A-P 64.5 ±12.8 62.7 ±16.7 64.1 ±13.6 173 ±30.5 193 ±42.1 183 ±33.6
ϖ S-I 81.8 ±17.0 121 ±28.1 118 ±32.2 96.9 ±21.2 193 ±21.5 145 ±22.6
ρ A-P 98.8 ±0.04 99.1 ±0.02 99.1 ±0.04 98.5 ±0.07 98.8 ±0.06 99.1 ±0.04
ρ S-I 99.1 ±0.03 99.2 ±0.02 99.2 ±0.03 98.5 ±0.08 98.8 ±0.04 98.9 ±0.04
L Z A-P 5.46 ±0.12 4.97 ±0.12 4.92 ±0.14 6.26 ±0.19 5.44 ±0.17 4.83 ±0.14
L Z S-I 6.36 ±0.14 6.21 ±0.15 6.31 ±0.16 7.17 ±0.22 6.42 ±0.21 5.91 ±0.18
  1. * denotes multiplication by 10-2.