Document Detail


Automatic food intake detection based on swallowing sounds.
MedLine Citation:
PMID:  23125873     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This paper presents a novel fully automatic food intake detection methodology, an important step toward objective monitoring of ingestive behavior. The aim of such monitoring is to improve our understanding of eating behaviors associated with obesity and eating disorders. The proposed methodology consists of two stages. First, acoustic detection of swallowing instances based on mel-scale Fourier spectrum features and classification using support vector machines is performed. Principal component analysis and a smoothing algorithm are used to improve swallowing detection accuracy. Second, the frequency of swallowing is used as a predictor for detection of food intake episodes. The proposed methodology was tested on data collected from 12 subjects with various degrees of adiposity. Average accuracies of >80% and >75% were obtained for intra-subject and inter-subject models correspondingly with a temporal resolution of 30s. Results obtained on 44.1 hours of data with a total of 7305 swallows show that detection accuracies are comparable for obese and lean subjects. They also suggest feasibility of food intake detection based on swallowing sounds and potential of the proposed methodology for automatic monitoring of ingestive behavior. Based on a wearable non-invasive acoustic sensor the proposed methodology may potentially be used in free-living conditions.
Authors:
Oleksandr Makeyev; Paulo Lopez-Meyer; Stephanie Schuckers; Walter Besio; Edward Sazonov
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-6
Journal Detail:
Title:  Biomedical signal processing and control     Volume:  7     ISSN:  1746-8094     ISO Abbreviation:  Biomed Signal Process Control     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101317299     Medline TA:  Biomed Signal Process Control     Country:  -    
Other Details:
Languages:  ENG     Pagination:  649-656     Citation Subset:  -    
Affiliation:
Department of Electrical, Computer, and Biomedical Engineering, University of Rhode Island, 4 East Alumni Ave, Kingston, RI 02881, USA.
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