Optogenetically evoked local field potential (LFP) recorded from the medial prefrontal cortex (mPFC) of mice during basal conditions and following a systemic cocaine administration were analyzed. Blue light stimuli were delivered to mPFC through a fiber optic every 2 s and each trial was repeated 100 times. As in the previous study, we used a surrogate data method to check that nonlinearity was...

A branching process model of a bacterial population with initial lag phase is developed. Approximations are established in order to facilitate parameter estimation. The validity of approximations and estimation procedures is tested with simulated data.

The influence of Fe(II) on the dissimilatory bacterial reduction of an Fe(III) aqueous complex (Fe(III)-citrate(aq)) was investigated using Shewanella putrefaciens strain CN32. The sorption of Fe(II) on CN32 followed a Langmuir isotherm. Least-squares fitting gave a maximum sorption capacity of Qmax = 4.19 x 10(-3) mol/10(12) cells (1.19 mmol/m2 of cell surface area) and an affinity coefficient...

We consider the system of dual-phase-lag thermoelasticity proposed by Chandrasekharaiah and Tzou. First, we prove that the solutions of the problem are generated by a semigroup of quasi-contractions. Thus, the problem of third-order in time is well-posed. Then the expontial stability is investigated. Finally the spatial behavior of solutions is analyzed in a semi-infinite cylinder and a resuult...

Physiological characteristics of first order horizontal canal neurons , especially the relationship between their spontaneous activity and response to angular acceleration were studied in 20 albino guinea pigs. The average resting ISI was 48.9ms and this was clearly lower than that in pigmented guinea pigs. The neurons differentiated into three groups according to their CV values. These called ...

The celebrated Kuramoto model provides an analytically tractable framework to study spontaneous collective synchronization and comprises globally coupled limit-cycle oscillators interacting symmetrically with one another. Sakaguchi-Kuramoto is a generalization of the basic that considers presence phase-lag parameter in interaction, thereby making it asymmetric between oscillator pairs. Here, we...

We demonstrate that networks of neuronal oscillators with three-body interactions can store multiple phase-lag patterns as continuous attractors, along which the degree of synchrony varies continuously. Such a mechanism could greatly enhance the encoding and retrieval of analog information in cortical neuronal networks. Keywords—Continuous attractors, Three-body interactions, Associative memory...