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...

We investigated the coupling between a speaker's and a listener's eye movements. Some participants talked extemporaneously about a television show whose cast members they were viewing on a screen in front of them. Later, other participants listened to these monologues while viewing the same screen. Eye movements were recorded for all speakers and listeners. According to cross-recurrence analysi...

Surgery is a team effort. In this video, we display how we record two surgeons’ eye motions during a simulated surgical operation, then performed Cross Recurrence Analysis (CRA) on the dual eye-tracking data to develop a valid technology to assess shared cognition. Twenty-two dyad teams were recruited to perform object transportation task using laparoscopic techniques. Outputs from CRA, includi...

TEOAE responses from neonatal (age: 48 hours) and adult subjects (age: 26.6 ±10.0 years) were analyzed by the combined use of Recurrence Quantification Analysis and Singular Value Decomposition. The data from the two age groups showed significant differences and similarities. The neonatal responses presented less deterministic structures than the adults, in terms of recurrent dynamical features...

This extended abstract briefly outlines our submission to the audio cover song identification task run inside the 2009 music information retrieval evaluation exchange (MIREX). We very briefly introduce cover song identification, give an overview of the submitted system, and comment on the evaluation procedure (specially on the used music collections) and the achieved results. As the submission ...

We propose recurrence plots (RPs) to characterize the stickiness of a typical area-preserving map with coexisting chaotic and regular orbits. The difference of the recurrence properties between quasiperiodic and chaotic orbits is revisited, which helps to understand the complex patterns of the corresponding RPs. Moreover, several measures from the recurrence quantification analysis are used to ...

Recurrence quantification analysis (RQA) is a nonlinear method providing information on the temporal structure of time series. RQA has been extensively used to explore various noisy and nonstationary physiological signals. However, application force signals acquired during voluntary fatiguing contractions performed until exhaustion remain be investigated. We aimed sensitivity percentage determi...

Recurrence Quantification Analysis (RQA) is a method for measuring the complexity of dynamical systems. determinism fundamental characteristic RQA, closely related to correlation sum. In this paper, we study asymptotic behavior these quantities interval maps. We show which cases sum exists. An example an map with zero entropy and point finite [Formula: see text]-limit set does not exist given. ...