Recurrence quantification analysis (RQA) is an acknowledged method for the characterization of experimental time series. We propose a parametric version RQA, pRQA, allowing fast processing spatial arrays series, once each modeled by autoregressive stochastic process. This relies on analytical derivation asymptotic expressions five current RQA measures as function model parameters. By avoiding c...

introduction: it is recommended that the physician apply at least a semi-quantitative segmental scoring system in myocardial perfusion spect.  we aimed to assess the agreement between automated semi-quantitative analysis using qps (quantitative perfusion spect) software and visual approach for calculation of summed stress  score (sss), summed rest score (srs) and summed difference score (sds). ...

Recurrence quantification analysis (RQA) was used to characterize the folding properties of 22 chimeric sequences derived from two parent proteins of similar length but different three-dimensional arrangement. A non-linear relation between sequence data and their RQA representation was revealed, which points to new information carried by this method as compared with classical best-alignment met...

When two people discuss something in front of them, what is the relationship between their eye movements? In Richardson and Dale’s (2005) study, participants talked extemporaneously about a TV show while viewing pictures of its cast members. Later, other participants listened to these monologues while viewing the same screen. Cross-recurrence analysis revealed that the coupling between speaker ...

In sixth century BC, Pythagoras discovered the mathematical foundation of musical consonance and dissonance. When auditory frequencies in small-integer ratios are combined, the result is a harmonious perception. In contrast, most frequency combinations result in audible, off-centered by-products labeled “beating” or “roughness;” these are reported by most listeners to sound dissonant. In this p...