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Effects of liquid stimuli on dual-axis swallowing accelerometry signals in a healthy population

BACKGROUND: Dual-axis swallowing accelerometry has recently been proposed as a tool for non-invasive analysis of swallowing function. Although swallowing is known to be physiologically modifiable by the type of food or liquid (i.e., stimuli), the effects of stimuli on dual-axis accelerometry signals...

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Autores principales: Lee, Joon, Sejdić, Ervin, Steele, Catriona M, Chau, Tom
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2829571/
https://www.ncbi.nlm.nih.gov/pubmed/20128928
http://dx.doi.org/10.1186/1475-925X-9-7
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author Lee, Joon
Sejdić, Ervin
Steele, Catriona M
Chau, Tom
author_facet Lee, Joon
Sejdić, Ervin
Steele, Catriona M
Chau, Tom
author_sort Lee, Joon
collection PubMed
description BACKGROUND: Dual-axis swallowing accelerometry has recently been proposed as a tool for non-invasive analysis of swallowing function. Although swallowing is known to be physiologically modifiable by the type of food or liquid (i.e., stimuli), the effects of stimuli on dual-axis accelerometry signals have never been thoroughly investigated. Thus, the objective of this study was to investigate stimulus effects on dual-axis accelerometry signal characteristics. Signals were acquired from 17 healthy participants while swallowing 4 different stimuli: water, nectar-thick and honey-thick apple juices, and a thin-liquid barium suspension. Two swallowing tasks were examined: discrete and sequential. A variety of features were extracted in the time and time-frequency domains after swallow segmentation and pre-processing. A separate Friedman test was conducted for each feature and for each swallowing task. RESULTS: Significant main stimulus effects were found on 6 out of 30 features for the discrete task and on 5 out of 30 features for the sequential task. Analysis of the features with significant stimulus effects suggested that the changes in the signals revealed slower and more pronounced swallowing patterns with increasing bolus viscosity. CONCLUSIONS: We conclude that stimulus type does affect specific characteristics of dual-axis swallowing accelerometry signals, suggesting that associated clinical screening protocols may need to be stimulus specific.
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spelling pubmed-28295712010-02-28 Effects of liquid stimuli on dual-axis swallowing accelerometry signals in a healthy population Lee, Joon Sejdić, Ervin Steele, Catriona M Chau, Tom Biomed Eng Online Research BACKGROUND: Dual-axis swallowing accelerometry has recently been proposed as a tool for non-invasive analysis of swallowing function. Although swallowing is known to be physiologically modifiable by the type of food or liquid (i.e., stimuli), the effects of stimuli on dual-axis accelerometry signals have never been thoroughly investigated. Thus, the objective of this study was to investigate stimulus effects on dual-axis accelerometry signal characteristics. Signals were acquired from 17 healthy participants while swallowing 4 different stimuli: water, nectar-thick and honey-thick apple juices, and a thin-liquid barium suspension. Two swallowing tasks were examined: discrete and sequential. A variety of features were extracted in the time and time-frequency domains after swallow segmentation and pre-processing. A separate Friedman test was conducted for each feature and for each swallowing task. RESULTS: Significant main stimulus effects were found on 6 out of 30 features for the discrete task and on 5 out of 30 features for the sequential task. Analysis of the features with significant stimulus effects suggested that the changes in the signals revealed slower and more pronounced swallowing patterns with increasing bolus viscosity. CONCLUSIONS: We conclude that stimulus type does affect specific characteristics of dual-axis swallowing accelerometry signals, suggesting that associated clinical screening protocols may need to be stimulus specific. BioMed Central 2010-02-04 /pmc/articles/PMC2829571/ /pubmed/20128928 http://dx.doi.org/10.1186/1475-925X-9-7 Text en Copyright ©2010 Lee et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Lee, Joon
Sejdić, Ervin
Steele, Catriona M
Chau, Tom
Effects of liquid stimuli on dual-axis swallowing accelerometry signals in a healthy population
title Effects of liquid stimuli on dual-axis swallowing accelerometry signals in a healthy population
title_full Effects of liquid stimuli on dual-axis swallowing accelerometry signals in a healthy population
title_fullStr Effects of liquid stimuli on dual-axis swallowing accelerometry signals in a healthy population
title_full_unstemmed Effects of liquid stimuli on dual-axis swallowing accelerometry signals in a healthy population
title_short Effects of liquid stimuli on dual-axis swallowing accelerometry signals in a healthy population
title_sort effects of liquid stimuli on dual-axis swallowing accelerometry signals in a healthy population
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2829571/
https://www.ncbi.nlm.nih.gov/pubmed/20128928
http://dx.doi.org/10.1186/1475-925X-9-7
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