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  1. Article ; Online: Muscle activity during oral processing of sticky-cohesive foods.

    Kazemeini, Seyed Mostafa / Campos, Daniel Prado / Rosenthal, Andrew J

    Physiology & behavior

    2021  Volume 242, Page(s) 113580

    Abstract: We investigated muscle activity during oral processing of sticky model foods. Chewing Time extracted from the EMG data distinguished the most sticky and least sticky model foods from the others, but was not a good discriminator between the other models. ... ...

    Abstract We investigated muscle activity during oral processing of sticky model foods. Chewing Time extracted from the EMG data distinguished the most sticky and least sticky model foods from the others, but was not a good discriminator between the other models. Mean chew work declined by 25.4%, while the median frequency shift (which is related to muscle fatigue) increased by 54.9% during oral processing for all the model foods, with the effect being greatest for the stickiest foods. We conclude that the degree of stickiness is not a trigger for swallowing and changes in the other bolus properties, such as softness, may influence muscle activity to a level at which we can swallow.
    MeSH term(s) Deglutition ; Electromyography ; Food ; Mastication ; Muscles
    Language English
    Publishing date 2021-09-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3907-x
    ISSN 1873-507X ; 0031-9384
    ISSN (online) 1873-507X
    ISSN 0031-9384
    DOI 10.1016/j.physbeh.2021.113580
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    In stock of ZB MED Cologne/Königswinter

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  2. Article: Muscle activity during oral processing of sticky-cohesive foods

    Kazemeini, Seyed Mostafa / Campos, Daniel Prado / Rosenthal, Andrew J.

    Physiology & behavior. 2021 Dec. 01, v. 242

    2021  

    Abstract: We investigated muscle activity during oral processing of sticky model foods. Chewing Time extracted from the EMG data distinguished the most sticky and least sticky model foods from the others, but was not a good discriminator between the other models. ... ...

    Abstract We investigated muscle activity during oral processing of sticky model foods. Chewing Time extracted from the EMG data distinguished the most sticky and least sticky model foods from the others, but was not a good discriminator between the other models. Mean chew work declined by 25.4%, while the median frequency shift (which is related to muscle fatigue) increased by 54.9% during oral processing for all the model foods, with the effect being greatest for the stickiest foods.We conclude that the degree of stickiness is not a trigger for swallowing and changes in the other bolus properties, such as softness, may influence muscle activity to a level at which we can swallow.
    Keywords behavior ; hardness ; muscle fatigue ; muscles ; stickiness
    Language English
    Dates of publication 2021-1201
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 3907-x
    ISSN 1873-507X ; 0031-9384
    ISSN (online) 1873-507X
    ISSN 0031-9384
    DOI 10.1016/j.physbeh.2021.113580
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  3. Article ; Online: Detecting bone lesions in the emergency room with medical infrared thermography.

    der Strasse, Wally Auf / Campos, Daniel Prado / Mendonça, Celso Júnio Aguiar / Soni, Jamil Faissal / Mendes, Joaquim / Nohama, Percy

    Biomedical engineering online

    2022  Volume 21, Issue 1, Page(s) 35

    Abstract: Introduction: Low- to high-energy impact trauma may cause from small fissures up to extended bone losses, which can be classified as closed or opened injuries (when they are visible at a naked eye).: Objective: The aim of this study was to ... ...

    Abstract Introduction: Low- to high-energy impact trauma may cause from small fissures up to extended bone losses, which can be classified as closed or opened injuries (when they are visible at a naked eye).
    Objective: The aim of this study was to investigate the feasibility of clinical diagnosis of bone trauma through medical infrared thermography, in a hospital emergency room.
    Methods: Forty-five patients with suspected diagnosis of bone fracture were evaluated by means of medical infrared images, and the data correlated with the gold standard radiographic images, in the anteroposterior, lateral, and oblique views, at the orthopedic emergency department. The control group consisted of thermal images of the contralateral reference limb of the volunteers themselves. Data were acquired with a medical grade infrared camera in the regions of interest (ROIs) of leg, hand, forearm, clavicle, foot, and ankle.
    Results: In all patients evaluated with a diagnosis of bone fracture, the mean temperature of the affected limb showed a positive difference greater than 0.9 °C (towards the contralateral), indicating the exact location of the bone trauma according, while the areas diagnosed with reduced blood supply, showed a mean temperature with a negative variation.
    Conclusion: Clinical evaluation using infrared imaging indicates a high applicability potential as a tool to support quick diagnosis of bone fractures in patients with acute orthopedic trauma in an emergency medical setting. The thermal results showed important physiological data related to vascularization of the bone fracture and areas adjacent to the trauma well correlated to radiographic examinations.
    MeSH term(s) Emergency Service, Hospital ; Fractures, Bone/diagnostic imaging ; Humans ; Infrared Rays ; Lower Extremity ; Sensitivity and Specificity ; Thermography/methods
    Language English
    Publishing date 2022-06-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 2084374-4
    ISSN 1475-925X ; 1475-925X
    ISSN (online) 1475-925X
    ISSN 1475-925X
    DOI 10.1186/s12938-022-01005-7
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  4. Article ; Online: Forehead, Temple and Wrist Temperature Assessment of Ethnic Groups using Infrared Technology.

    Auf der Strasse, Wally / Campos, Daniel Prado / Mendonça, Celso Júnio Aguiar / Soni, Jamil Faissal / Mendes, Joaquim / Nohama, Percy

    Medical engineering & physics

    2022  Volume 102, Page(s) 103777

    Abstract: Non-contact infrared sensors are widely used as a diagnostic tool for elevated body temperature during initial screening for coronaviruses. The aim of this study was to investigate the thermal differences at three anatomical points: temple, forehead, and ...

    Abstract Non-contact infrared sensors are widely used as a diagnostic tool for elevated body temperature during initial screening for coronaviruses. The aim of this study was to investigate the thermal differences at three anatomical points: temple, forehead, and wrist, in the initial screening for temperature indicative of febrile and non-febrile states in skin pigmentation variations in Black, Half-Black and Caucasian skins, correlated with height and weight variables. Temperatures were obtained by means of an infrared thermometer in 289 volunteers with mean age of 18.30 ± 0.76, in a controlled environment according to Singapore Standard, SS582 part 1 and 2, normative standard IEC 80601-2-59, with standard technical protocols established by the International Organization for Standardization, ISO / TR 13154. The data were processed in MATLAB® R2021a, and data normality verified by Kolmogorov-Smirnov test, non-parametric data paired between temple / forehead / wrist were compared using the Wilcoxon signed-rank test. The results show different median temperatures in these anatomical regions, 37.2°C at the temple, 36.8°C at the forehead and 36.4°C at the wrist. As the temple region presents a temperature higher than the other investigated regions and, therefore, close to the core temperature, it should be considered for the initial screening of SARS-CoV-2 when using non-contact infrared thermometers. Furthermore, no significant changes were found due to variation in skin tone, height, or weight.
    MeSH term(s) Adolescent ; Adult ; Body Temperature ; COVID-19/diagnosis ; Ethnicity ; Forehead ; Humans ; SARS-CoV-2 ; Technology ; Temperature ; Wrist ; Young Adult
    Language English
    Publishing date 2022-02-16
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1181080-4
    ISSN 1873-4030 ; 1350-4533
    ISSN (online) 1873-4030
    ISSN 1350-4533
    DOI 10.1016/j.medengphy.2022.103777
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  5. Article: Evaluation of Tibia Bone Healing by Infrared Thermography: A Case Study.

    Auf der Strasse, Wally / Campos, Daniel Prado / Mendonça, Celso Júnio Aguiar / Soni, Jamil Faissal / Mendes, Joaquim / Nohama, Percy

    Journal of multidisciplinary healthcare

    2021  Volume 14, Page(s) 3161–3175

    Abstract: Background: Thermal imaging has been used as a clinical follow-up technique in several medical specialties.: Purpose: The aim of this study was to investigate the feasibility of using medical thermography in the diagnosis and follow-up assessment of ... ...

    Abstract Background: Thermal imaging has been used as a clinical follow-up technique in several medical specialties.
    Purpose: The aim of this study was to investigate the feasibility of using medical thermography in the diagnosis and follow-up assessment of a severe orthopedic trauma that requires the use of an external circular fixator.
    Patients and methods: Twenty clinical follow-ups of thermal imaging correlated with X-ray images were performed in a male volunteer, diagnosed with bone nonunion, during 11 months of treatment, in the hospital trauma and reconstruction department. Data were acquired in the regions of interest of the proximal tibia, diaphysis and distal, with a Flir T530 medical grade infrared camera from Flir Systems
    Results: Statistical analysis was performed by Wilcoxon signed-rank test. The results showed a median temperature of 22.2°C, and thus some periods of interruption in the healing process between the third and twentieth clinical follow-up, and a significant increase of the temperature to 34.6°C synchronous with a diagnosis of bone infection by the eleventh clinical follow-up. The thermal images acquired during the 20 clinical follow-ups allow a correlation with the data from the X-ray exams and also with the contralateral limb of the evaluated patient, showing thermal alterations greater than 0.3°C, which are significant of physiological abnormality.
    Conclusion: The thermography exam can be a useful tool for applying on the follow-up of patients after trauma or bone fracture. The results showed important physiological data related to the vascularization necessary for bone repairing, being therefore a good indicator of the healing process. In addition, as infrared thermography does not use ionizing radiation, it can be used countlessly, in complement to the traditional X-ray exams that focus on anatomical data analysis.
    Language English
    Publishing date 2021-11-13
    Publishing country New Zealand
    Document type Case Reports
    ZDB-ID 2453343-9
    ISSN 1178-2390
    ISSN 1178-2390
    DOI 10.2147/JMDH.S330094
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  6. Article ; Online: Analysis of Influence of Segmentation, Features, and Classification in sEMG Processing: A Case Study of Recognition of Brazilian Sign Language Alphabet.

    Mendes Junior, José Jair Alves / Freitas, Melissa La Banca / Campos, Daniel Prado / Farinelli, Felipe Adalberto / Stevan, Sergio Luiz / Pichorim, Sérgio Francisco

    Sensors (Basel, Switzerland)

    2020  Volume 20, Issue 16

    Abstract: Sign Language recognition systems aid communication among deaf people, hearing impaired people, and speakers. One of the types of signals that has seen increased studies and that can be used as input for these systems is surface electromyography (sEMG). ... ...

    Abstract Sign Language recognition systems aid communication among deaf people, hearing impaired people, and speakers. One of the types of signals that has seen increased studies and that can be used as input for these systems is surface electromyography (sEMG). This work presents the recognition of a set of alphabet gestures from Brazilian Sign Language (Libras) using sEMG acquired from an armband. Only sEMG signals were used as input. Signals from 12 subjects were acquired using a Myo
    MeSH term(s) Electromyography ; Gestures ; Humans ; Pattern Recognition, Automated ; Sign Language ; Signal Processing, Computer-Assisted
    Language English
    Publishing date 2020-08-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s20164359
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  7. Article: Surface electromyography segmentation and feature extraction for ingestive behavior recognition in ruminants

    Campos, Daniel Prado / André Luís Finkler da Silveira / Fábio Luiz Bertotti / João Ari Gualberto Hill / Paulo José Abatti

    Computers and electronics in agriculture. 2018 Oct., v. 153

    2018  

    Abstract: This work presents a method to identify the ingestive behavior in ruminants using Surface Electromyography (sEMG) of the masseter muscle. The main hypothesis tested is whether the rumination and food eaten can be recognized from sEMG signal features ... ...

    Abstract This work presents a method to identify the ingestive behavior in ruminants using Surface Electromyography (sEMG) of the masseter muscle. The main hypothesis tested is whether the rumination and food eaten can be recognized from sEMG signal features using machine learning techniques. Also, a novel segmentation technique was explored and applied to automatically subdivide the chewing movement signal. Seven classifiers were evaluated using eight features extracted from the signal and combined into five sets. The three scenarios investigated were: differentiation between rumination and grazing (IR), food identification for four different foods (FC) and both situations combined (FCR). The segmentation window size effect on the accuracy was also investigated. We found an accuracy over 70% for IR and FC and nearby 60% for FCR using a Multilayer Perceptron Neural Network (MLP-NN). Highlighted features were the Cepstrum coefficients (CEPS) and the signal Wavelength (WL). Segments between 600 and 1000 ms proved to be suitable. The segmentation technique and the proposed scheme are reliable for application although there is room for improvement.
    Keywords artificial intelligence ; electromyography ; grazing ; mastication ; muscles ; neural networks ; ruminants ; rumination ; wavelengths
    Language English
    Dates of publication 2018-10
    Size p. 325-333.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 395514-x
    ISSN 0168-1699
    ISSN 0168-1699
    DOI 10.1016/j.compag.2018.08.033
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    In stock of ZB MED Bonn / Germany

    Z 4541: Show issues

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