KARDIA

KARDIA, which actually stands for “heart” in Greek is a GUI designed for the analysis of cardiac interbeat interval (IBI) data.

KARDIA allows interactive importing and visualization of both IBI data and event-related information.

Available functions permit the analysis of phasic heart rate changes in response to specific visual or auditory stimuli, using either weighted averages or different interpolation methods (constant, linear, spline) at any userdefined analysis window or sampling rate.

KARDIA also provides the user with functions to calculate all commonly used time-domain statistics of heart rate variability and to perform spectral decomposition by using either Fast Fourier Transform or auto-regressive models.

Scaling properties of the IBI series can also be assessed by means of Detrended Fluctuation Analysis. Quantitative results can be easily exported in Excel and Matlab format for further statistical analysis.