Results 21 to 30 of about 1,131,367 (289)

Biometric Identification Method for Heart Sound Based on Multimodal Multiscale Dispersion Entropy

open access: yesEntropy, 2020
In this paper, a new method of biometric characterization of heart sounds based on multimodal multiscale dispersion entropy is proposed. Firstly, the heart sound is periodically segmented, and then each single-cycle heart sound is decomposed into a group
Xiefeng Cheng, Pengfei Wang, Chenjun She
doaj   +1 more source

Study on chaotic characteristics of heart sound based on correlation dimension and K entropy

open access: yesAIP Advances, 2019
Heart sound is a kind of non-stationary and nonlinear signal with typical chaotic characteristics. As everyone knows, exercise and age can influence heart function, will they also influence the chaotic characteristics of heart sound?
Chenjun She, Xiefeng Cheng, Jing Wang
doaj   +1 more source

Optimal Site for Precordial Stethoscope Placement in Pediatric Patients Younger Than Two Years: A Preliminary Cross-Sectional Study

open access: yesArchives of Anesthesia and Critical Care, 2021
Background: The precordial stethoscope is a traditional and non-invasive monitoring method during pediatric general anesthesia. In this preliminary cross-sectional study, we aimed to investigate the characteristics of lung and heart sounds via precordial
Hidekazu Ito, Shoji Mizuno, Kenji Iio
doaj   +1 more source

A Robust Interpretable Deep Learning Classifier for Heart Anomaly Detection Without Segmentation

open access: yes, 2020
Traditionally, abnormal heart sound classification is framed as a three-stage process. The first stage involves segmenting the phonocardiogram to detect fundamental heart sounds; after which features are extracted and classification is performed.
Denman, Simon   +5 more
core   +1 more source

Preventing the development of observationally learnt fears in children by devaluing the model's negative response [PDF]

open access: yes, 2015
Vicarious learning has become an established indirect pathway to fear acquisition. It is generally accepted that associative learning processes underlie vicarious learning; however, whether this association is a form of conditioned stimulus-unconditioned
Askew, Chris   +2 more
core   +1 more source

Immersive Composition for Sensory Rehabilitation: 3D Visualisation, Surround Sound, and Synthesised Music to Provoke Catharsis and Healing [PDF]

open access: yes, 2014
There is a wide range of sensory therapies using sound, music and visual stimuli. Some focus on soothing or distracting stimuli such as natural sounds or classical music as analgesic, while other approaches emphasize the active performance of producing ...
A. Cohen   +9 more
core   +1 more source

Review on the Advancements of Stethoscope Types in Chest Auscultation

open access: yesDiagnostics, 2023
Stethoscopes were originally designed for the auscultation of a patient’s chest for the purpose of listening to lung and heart sounds. These aid medical professionals in their evaluation of the cardiovascular and respiratory systems, as well as in other ...
Jun Jie Seah   +3 more
doaj   +1 more source

Design of a Novel Medical Acoustic Sensor Based on MEMS Bionic Fish Ear Structure

open access: yesMicromachines, 2022
High-performance medical acoustic sensors are essential in medical equipment and diagnosis. Commercially available medical acoustic sensors are capacitive and piezoelectric types. When they are used to detect heart sound signals, there is attenuation and
Chenzheng Zhou   +8 more
doaj   +1 more source

Generalised anxiety disorder doubles risk of cardiovascular events in people with stable coronary heart disease [PDF]

open access: yes, 2011
Does generalised anxiety disorder (GAD) affect cardiovascular events associated with coronary heart disease (CHD)? Population: 1015 patients with stable coronary heart. Eligible patients had at least one of the following: history of myocardial infarction
Phillips, Anna C.
core   +1 more source

Classification of Heart Sounds Based on the Wavelet Fractal and Twin Support Vector Machine

open access: yesEntropy, 2019
Heart is an important organ of human beings. As more and more heart diseases are caused by people’s living pressure or habits, the diagnosis and treatment of heart diseases also require technical improvement.
Jinghui Li, Li Ke, Qiang Du
doaj   +1 more source

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