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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...
Autores principales: | , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2010
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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. |
format | Text |
id | pubmed-2829571 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
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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