Results 231 to 240 of about 53,782 (273)

Quadratic trend analysis and heartbeat detection

Biological Psychology, 2001
In heartbeat detection tasks based on the Method of Constant Stimuli (MCS), subjects judge the simultaneity between their heartbeats and stimuli presented at six intervals ranging from 0 to 500 ms after the R-waves on an electrocardiogram. Because research suggests that subjects do not perceive stimuli at 0 or 500 ms as simultaneous, individual ...
Stefan Wiens
exaly   +3 more sources

Heartbeat Detection: Judgments of the Simultaneity of External Stimuli and Heartbeats

Psychophysiology, 1988
ABSTRACTAfter practice in judging the simultaneity of brief visual and auditory stimuli, 32 subjects were examined on a heartbeat discrimination procedure in which tones were presented at intervals of 0, 100, 200, 300, 400, or 500 ms following each R‐wave.
J, Brener, C, Kluvitse
openaire   +2 more sources

Electronic Stethoscope for Heartbeat Abnormality Detection

2021
Cardiovascular diseases (CVD) are one of the main causes of death and disability in most countries of the world. However, most countries do not currently have a comprehensive mass identification of risk factors and an overall assessment of the risk of developing CVD.
Batyrkhan Omarov, Aidar Batyrbekov, Kuralay Dalbekova, Glyussya Abdulkarimova, Saule Berkimbaeva, Saya Kenzhegulova, Farida Gusmanova, Aigerim Yergeshova, Bauyrzhan Omarov   +8 more
openaire   +1 more source

Detection of the Heartbeat and Events in the Cardiac Cycle

Psychophysiology, 1985
ABSTRACTIn previous studies the heartbeat has been defined in terms of individual components of the cardiac cycle (e.g., the R‐wave or the ventricular contraction) as specified by the experimenter, and subjects have been classified as nondetectors if they failed the task set by the experimenter.
A J, Yates, K E, Jones, G V, Marie, J H, Hogben   +3 more
exaly   +3 more sources

Detection of Abnormal Heartbeats in Compressed Electrocardiograms

2018 IEEE International Symposium on Medical Measurements and Applications (MeMeA), 2018
The electrocardiogram (ECG) is an important measurement for diagnosing heart disease. Transmission of continuous ECG over a wireless network can be taxing; therefore, compressing the ECG can reduce the load on wireless networks. On the other hand, reconstructing the ECG for analysis can be computationally intensive.
Mohamed Abdelazez, Sreeraman Rajan, Adrian D. C. Chan   +2 more
openaire   +1 more source

Heartbeat OCT: superfast imaging and elasticity detection

Biomedical Optics 2016, 2016
Intravascular Optical Coherence Tomography (IV-OCT) has generated a wealth of data that has deepened our understanding of coronary artery disease and catheter-based interventions on the vasculature. A number of issues, however – cardiac motion artifacts, undersampling and non-uniform rotational distortion (NURD) chiefly among them – affect the quality ...
Wang, Tianshi, Pfeiffer, Tom, Regar, Evelyn, Wieser, Wolfgang, Van Beusekom, Heleen, Lancee, Charles T., Springeling, Geert, Van der Steen, Antonius F.W., Huber, Robert, Van Soest, Gijs   +9 more
openaire   +2 more sources

Heartbeat detection and the experience of emotions

Cognition & Emotion, 2000
Although many theories of emotion hypothesise a crucial role for the selfperception of visceral activity, there has been little empirical investigation of the relationship between visceral self-perception and emotion. In this study, 52 undergraduates (19 males, 33 females) performed a heartbeat detection task and were classi® ed as good (n 5 9) or poor
Stefan Wiens, Elizabeth S. Mezzacappa, Edward S. Katkin   +2 more
openaire   +1 more source

The relationship between cardiovascular reactivity and heartbeat detection

Psychophysiology, 1994
AbstractThis experiment tested the hypothesis that inotropic cardiovascular reactivity to stress is related to performance on heartbeat discrimination tasks. The experiment also compared the efficacy of a specific modification of two popular heartbeat discrimination paradigms, Whitehead's and Katkin's. Subjects were 48 male undergraduates who performed
Edward S Katkin
exaly   +3 more sources

Detection of Multiple Heartbeats Using Doppler Radar

2006 IEEE International Conference on Acoustics Speed and Signal Processing Proceedings, 2006
Doppler radar life sensing has shown promise in medical and security applications. The current paper considers the problem of determining the number of persons in a given area (e.g., a room) using the Doppler shift due to heartbeat. The signal is weak and time-varying, and therefore poses a complicated signal processing problem.
Qin Zhou, Jianhan Liu, Anders Høst-Madsen, Olga Boric-Lubecke, Victor Lubecke   +4 more
openaire   +1 more source

Botnet Host Detection Based on Heartbeat Association

Proceedings of the 2020 4th International Conference on Cryptography, Security and Privacy, 2020
As a common means of communication, heartbeat is often used by the network applications. Hosts with the same heartbeat tend to have the same applications and thus share the homogenous vulnerabilities. Based on the detected heartbeat, the paper designs the heartbeat network, the heartbeat associated graph and an attribute propagation algorithm based on ...
Wei Ding 0001, Zidong Hua, Panhui Li, Qiushi Gong, Yuxi Cheng   +4 more
openaire   +1 more source