UQAM Cognitive Science Institute, Montreal 2012 Self-Oscillator Model of Cognitive Bistability Explains Percept Reversal Rate Characteristics with Periodically Interrupted Ambiguous Stimulus Norbert Fürstenau German Aerospace Center, Inst. of Flight Guidance, Braunschweig Abstract A stochastic nonlinear dynamics model is presented which explains published experimental results with periodically ...

We theoretically study a strongly disordered superconducting layer heated by near-field microwave radiation from nanometric metallic tip. The microwaves heat up the quasiparticles, which cool phonon emission and conduction away area. Due to bistability with two stable states of electron temperature under tip, heating can be tuned induce submicrometer-sized normal region bounded sharp domain wal...

We analyze the Jaynes-Cummings model of quantum optics, in the strong-dispersive regime. In the bad-cavity limit and on time scales short compared to the atomic coherence time, the dynamics are those of a nonlinear oscillator. A steady-state nonperturbative semiclassical analysis exhibits a finite region of bistability delimited by a pair of critical points, unlike the usual dispersive bistabil...

We report, the first time to our knowledge, an observation of optical bistability in a Vertical-Cavity Semiconductor Optical Amplifier (VCSOA) operated in reflection mode. Counterclockwise hysteresis loops are obtained over a range of initial phase detuning and bias currents. One hysteresis loop is observed experimentally with an input power as low as 2 ìW when the device is biased at 98% of it...

We report on a thermodielectric bistability in dual frequency nematic liquid crystals (LCs) caused by the anisotropic nature of dielectric heating and director reorientation in an electric field. The bistability is a result of the positive feedback loop: director reorientation --> anisotropic dielectric heating --> dielectric anisotrophy --> director reorientation. We demonstrate both experimen...