Results 41 to 50 of about 348,367 (159)

Fast joint detection-estimation of evoked brain activity in event-related fMRI using a variational approach [PDF]

, 2012
In standard clinical within-subject analyses of event-related fMRI data, two steps are usually performed separately: detection of brain activity and estimation of the hemodynamic response.
Chaari, Lotfi, Ciuciu, Philippe, Dojat, Michel, Forbes, Florence, Vincent, Thomas   +4 more
core   +4 more sources

The Pentax airway scope versus the Macintosh laryngoscope: Comparison of hemodynamic responses and concentrations of plasma norepinephrine to tracheal intubation [PDF]

Korean Journal of Anesthesiology, 2013
BackgroundThe Pentax Airway Scope (AWS) is a video laryngoscope designed to facilitate tracheal intubation with a high-resolution image. The Pentax AWS has been reported to cause less hemodynamic stress than the Macintosh laryngoscope.
Heeseung Lee
doaj   +1 more source

Functional Brain Imaging of Young, Nondemented, and Demented Older Adults [PDF]

, 2010
Brain imaging based on functional MRI (fMRI) provides a powerful tool for characterizing age-related changes in functional anatomy. However, between-population comparisons confront potential differences in measurement properties.
Buckner, Randy Lee, Morris, John C., Raichle, Marcus E., Sanders, Amy L., Snyder, Abraham Z.   +4 more
core   +1 more source

Anthracycline-Induced Cardiotoxicity: Cardiac Monitoring by Continuous Wave-Doppler Ultrasound Cardiac Output Monitoring and Correlation to Echocardiography [PDF]

, 2012
Background: Anthracyclines are agents with a well-known cardiotoxicity. The study sought to evaluate the hemodynamic response to an anthracycline using real-time continuous-wave (CW)-Doppler ultrasound cardiac output monitoring (USCOM) and ...
Andreas Hausmann, Cardinale D, Cardinale D, Cardinale D, Cardinale D, Cheitlin MD, Cheitlin MD, Cooper LT, Cooper LT, Dey I, Dorothee Baur, Elliott P, Goorin AM, Gustafsson F, Hans Joachim Stemmler, Iwanaga Y, Jain D, Johanna Tischer, Kinnunen P, Knobloch K, Knobloch K, Knobloch K, Koh E, Lipshultz SE, Meinardi MT, Mueller C, Mueller C, Mueller T, Patricia Suhl, Petra Stieber, Rademaker MT, Ryberg M, Sandra Geiger, Sophia Horster, Steinherz LJ, Stemmler HJ, Tan HL, Urek R, van Lelyveld-Haas LE, Veronika Lange   +39 more
core   +1 more source

Effect of dexmedetomidine on attenuation of hemodynamic response to intubation, skin incision, and sternotomy in coronary artery bypass graft patients: A double-blind randomized control trial

Journal of Anaesthesiology Clinical Pharmacology, 2020
Background and Aims: Coronary artery bypass grafting (CABG) surgery involves various noxious stimuli resulting in stress response, which in turn increases the risk of perioperative myocardial ischemia.
Manoj Kamal, Deepa Agarwal, Geeta Singariya, Kamlesh Kumari, Bharat Paliwal, Shobha Ujwal   +5 more
doaj   +1 more source

False positives and false negatives in functional near-infrared spectroscopy: issues, challenges, and the way forward [PDF]

, 2016
We highlight a significant problem that needs to be considered and addressed when performing functional near-infrared spectroscopy (fNIRS) studies, namely the possibility of inadvertently measuring fNIRS hemodynamic responses that are not due to ...
Scholkmann, F, Tachtsidis, I
core   +1 more source

Hemodynamic Deconvolution Demystified: Sparsity-Driven Regularization at Work [PDF]

, 2021
Deconvolution of the hemodynamic response is an important step to access short timescales of brain activity recorded by functional magnetic resonance imaging (fMRI). Albeit conventional deconvolution algorithms have been around for a long time (e.g., Wiener deconvolution), recent state-of-the-art methods based on sparsity-pursuing regularization are ...
arxiv   +1 more source

Retrieving the hemodynamic response function in resting state fMRI: methodology and application [PDF]

, 2015
In this paper we present a procedure to retrieve the hemodynamic response function (HRF) from resting state functional magnetic resonance imaging (fMRI) data.
Deshpande, Gopikrishna, Laureys, Steven, Marinazzo, Daniele, Wu, Guorong   +3 more
core   +2 more sources

Prefrontal cortex functional connectivity based on simultaneous record of electrical and hemodynamic responses associated with mental stress [PDF]

arXiv, 2021
This paper investigates prefrontal cortex (PFC) functional connectivity based on synchronized electrical and hemodynamic responses associated with mental stress. The electrical response was based on alpha rhythmic of Electroencephalography (EEG) signals and the hemodynamic responses were based on the mean concentrations of oxygenated and deoxygenated ...
arxiv  

A prospective randomized double-blind clinical study to compare the effect of nalbuphine versus fentanyl on attenuation of pressor response during endotracheal intubation and analgesic potential on patients under general anesthesia

The Indian Anaesthetists' Forum
Background: Laryngoscopy and orotracheal intubation often trigger a hemodynamic response, increasing catecholamines and potentially leading to higher morbidity.
Maina Singh, Naazneen Ali, Veena Patodi, Pradeep Kumar, Veena Mathur, Arvind Khare   +5 more
doaj   +1 more source