Spadotto André Augusto, Gatto Ana Rita, Cola Paula Cristina, Silva Roberta Gonçalves da, Schelp Arthur Oscar, Domenis Danielle Ramos, Dantas Roberto Oliveira
Faculdade de Engenharia, Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, SP, Brasil.
J Soc Bras Fonoaudiol. 2012;24(3):218-22. doi: 10.1590/s2179-64912012000300006.
To analyze the components of the acoustic signal of swallowing using a specific software.
Fourteen healthy subjects ranging in age from 20 to 50 years (mean age 31 ± 10 years), were evaluated. Data collection consisted on the simultaneous capture of the swallowing audio with a microphone and of the swallowing videofluoroscopic image. The bursts of the swallowing acoustic signal were identified and their duration and the interval between them were later analyzed using a specific software, which allowed the simultaneous analyses between the acoustic wave and the videofluoroscopic image.
Three burst components were identified in most of the swallows evaluated. The first burst presented mean time of 87.3 milliseconds (ms) for water and 78.2 for the substance. The second burst presented mean time of 112.9 ms for water and 85.5 for the pasty substance. The mean interval between first and second burst was 82.1 ms for water and 95.3 ms for the pasty consistency, and between second and third burst was 339.8 ms for water and 322.0 ms for the pasty consistency.
The software allowed the visualization of three bursts during the swallowing of healthy individuals, and showed that the swallowing signal in normal subjects is highly variable.
使用特定软件分析吞咽声信号的组成部分。
对14名年龄在20至50岁之间（平均年龄31±10岁）的健康受试者进行评估。数据收集包括用麦克风同时采集吞咽音频和吞咽视频荧光图像。识别吞咽声信号的脉冲群，随后使用特定软件分析其持续时间以及它们之间的间隔，该软件允许对声波和视频荧光图像进行同步分析。
在大多数评估的吞咽过程中识别出三个脉冲群组成部分。对于水，第一个脉冲群的平均时间为87.3毫秒（ms），对于物质为78.2毫秒。对于水，第二个脉冲群的平均时间为112.9毫秒，对于糊状物质为85.5毫秒。水的第一个和第二个脉冲群之间的平均间隔为82.1毫秒，糊状稠度为95.3毫秒，第二个和第三个脉冲群之间，水为339.8毫秒，糊状稠度为322.0毫秒。
该软件能够显示健康个体吞咽过程中的三个脉冲群，并表明正常受试者的吞咽信号具有高度变异性。
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