62 citations · 117 across the 10 of their papers we have counts for
10 papers
Frequency gradients in heterogeneous oscillatory media can spatially localize self-organized wave sources that coordinate system-wide activity
Ria Ghosh, Pavithraa Seenivasan, Shakti N. Menon +4
Rhythmogenesis, which is critical for many biological functions, involves a transition to coherent activity through cell-cell communication. In the absence of centralized coordinat…
When the clock strikes: Modeling the relation between circadian rhythms and cardiac arrhythmias
Pavithraa Seenivasan, Shakti N. Menon, S. Sridhar +1
It has recently been observed that the occurrence of sudden cardiac death has a close statistical relationship with the time of day, viz., ventricular fibrillation is most likely t…
Designer dynamics through chaotic traps: Controlling complex behavior in driven nonlinear systems
Shakti N. Menon, S. Sridhar, Sitabhra Sinha
Control schemes for dynamical systems typically involve stabilizing unstable periodic orbits. In this paper we introduce a new paradigm of control that involves `trapping' the dyna…
Using skewness and the first-digit phenomenon to identify dynamical transitions in cardiac models
Pavithraa Seenivasan, Soumya Easwaran, S. Sridhar +1
Disruptions in the normal rhythmic functioning of the heart, termed as arrhythmia, often result from qualitative changes in the excitation dynamics of the organ. The transitions be…
Critical role of pinning defects in scroll-wave breakup in active media
S. Sridhar, Anitna Ghosh, Sitabhra Sinha
The breakup of rotating scroll waves in three-dimensional excitable media has been linked to important biological processes. The known mechanisms for this transition almost exclusi…
Response to sub-threshold stimulus is enhanced by spatially heterogeneous activity
S. Sridhar, Sitabhra Sinha
Sub-threshold stimuli cannot initiate excitations in active media, but surprisingly as we show in this paper, they can alter the time-evolution of spatially heterogeneous activity…