Resting heart rate variability (HRV, an index of autonomic cardiac regulation) reflects heart rate fluctuations in response to subtle homeostatic demands, including the differing autonomic effects of inspiration
Is your resting heart rate high, normal or low? Do you know how to measure it? Learn all about what affects your resting heart rate.
Nevertheless, since the consensus of all studies point in the same direction, the preponderance of information is consistent and, while fluctuations no doubt exist based on the definition of “resting heart rate”, the prognostic information based on the data are robust enough to derive a ...
And annual assessments were performed to evaluate eGFR, and the renal outcome was defined by the trajectory of eGFR, which is less susceptible to short-term eGFR fluctuations. Consequently, our study offers a more precise evaluation of renal function progression over time. Additionally, the repeated...
The rationale of this method is to remove all that is periodic at the frequency of the heart and the respiration (RETROICOR) and all hemodynamic response to their fluctuations (PRF). The second correction method is the widely used and controversial global signal regression (GSR, see Murphy et...
Association between heart rate variability and fluctuations in resting-state functional connectivity. Neuroimage 68: 93–104. Article PubMed Google Scholar Chang LJ, Yarkoni T, Khaw MW, Sanfey AG (2013b). Decoding the role of the insula in human cognition: functional parcellation and large-...
The pipeline included spline interpolation for motion correction41, band-pass filtering of 0.01–0.1 Hz and conversion to HbO and Hbr fluctuations with modified Beer-Lambert law42. For each neonate, two connectivity maps, sized differently, were calculated using Pearson correlation. Channels ...
Interpreting temporal fluctuations in resting-state functional connectivity MRI. Neuroimage. 2017;163:437–55. Article PubMed Google Scholar Chahal R, Miller JG, Yuan JP, Buthmann JL, Gotlib IH. An exploration of dimensions of early adversity and the development of functional brain network ...
In this context, physiological response function (PRF) curves (cardiac and respiratory response functions), which are convolved with the corresponding physiological fluctuations, are commonly employed. While it has often been suggested that the PRF curves may be region- or subject-specific, it is ...
Elstad M, Walloe L, Chon KH, Toska K (2011) Low-frequency fluctuations in heart rate, cardiac output and mean arterial pressure in humans: what are the physiological relationships? J Hypertens 29:1327–1336 ArticleCASPubMedGoogle Scholar ...