Purpose Following the recognition, some 80 years ago, that the accommodation of the eye is
not stable but fluctuates over a range of about±0.5 D, mainly at frequencies of up to a few …

An assessment of the dynamic interactions between cardiovascular signals can provide
valuable information to improve the understanding of cardiovascular control. In this study …

The electrocardiogram (ECG) is a powerful non-invasive tool which allows for diagnosis of a
wide range of heart conditions. Today, portable ECG recording devices, equipped with a …

Purpose.: To measure tear film surface quality in healthy and dry eye subjects using three
noninvasive techniques of tear film quality assessment and to establish the ability of these …

Goal: An important research area in biomedical signal processing is that of quantifying the
relationship between simultaneously observed time series and to reveal interactions …

In steady state conditions, the accommodation of the human eye presents fluctuations.
These fluctuations, called microfluctuations, are described in the literature as having an …

Baroreflex is a mechanism of short‐term neural control responsible for maintaining stable
levels of arterial blood pressure (ABP) in an ABP‐heart rate negative feedback loop. Its …

Ocular monochromatic aberrations display dynamic behavior even when the eye is fixating
on a stationary stimulus. The fluctuations are commonly characterized in the frequency …

Objective Classic methods for assessing cerebral autoregulation involve a transfer function
analysis performed using the Fourier transform to quantify relationship between fluctuations …

Since the characterization of the eye's monochromatic aberration fluctuations in 2001, the
power spectrum has remained the most widely used method for analyzing their dynamics …