Results 211 to 220 of about 18,916 (251)

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

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

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

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
S, Eichler, E S, Katkin
openaire   +2 more sources

Heartbeat detection with Doppler radar based on spectrogram

2017 IEEE International Conference on Communications (ICC), 2017
A variability of R-R intervals that represent the peak-to-peak intervals of the heartbeats indicates the mental condition. Doppler radar can capture the information of heartbeats with less burden on subjects, which leads to less stress of subjects. However, non-contact heartbeat detection using Doppler radar is easily affected by respiration and body ...
Eriko Mogi, Tomoaki Ohtsuki
openaire   +1 more source

A robust methodology for heartbeat detection in imaging photoplethysmography

2013 International Conference on ICT Convergence (ICTC), 2013
The purpose of this study is to provide a new methodology for acquiring physiological features that c an b e applied to IPPGs, and will enable a IPPG to acquire more robust and reliable features data, enabling the production of new features sequences that can be used in heart rate variability (HRV) analysis or pulse rate variability (PRV) analysis.
Ming-Yen Chen, Chuan-Wei Ting
openaire   +1 more source

Scale selection technique for heartbeat detection algorithm

2017 14th International Multi-Conference on Systems, Signals & Devices (SSD), 2017
This paper presents an empirical study that aims to determine the frequency band best suited for ECG heartbeat detection operation for portable monitoring electronic device. This study was accomplished using the Continuous Wavelet Transform technique and in particular the Mexican-hat wavelet.
Ghassen Smaoui, Mohamed Abid
openaire   +1 more source

The Research of Heartbeat Detection Technique for Blade Server

2015
The blade servers have been widely used in the telecommunications, financial and other big data processing fields as for the high efficiency, stability and autonomy. This study takes the hot redundancy design for dual-BMC management of blade servers as the research project, and puts forward a heartbeat detection program utilizing I2C for transmission ...
Weiwei Jiang, Naikuo Chen, Shihua Geng
openaire   +1 more source