Decision-making requires the coordinated activity of diverse brain structures. For example, in maze-based tasks, the prefrontal cortex must integrate spatial information encoded in the hippocampus with mnemonic information concerning route and task rules in order to direct behavior appropriately. Using simultaneous tetrode recordings from CA1 of the rat hippocampus and medial prefrontal cortex,...

The hydrodynamic interpretation of quantum mechanics treats a system particles in an effective manner. In this work, we investigate squeezed coherent states within the interpretation. Hamiltonian operator question is time dependent, n-dimensional and quadratic order. We start with deriving phase space Wigner probability distribution associated equilibrium entropy for states. Then, decompose joi...

The receptive-field positions and orientation preferences of neurons occupying the same tangential location in visual cortex are thought to be similar but to have an associated random scatter. However, previous estimates of this scatter may have been inflated by the use of subjective plotting methods, sequential recording of single units, and residual eye movements. Here we report measurements ...

The technical advances in hardware and software for multiunit recordings have made it easier to gather data from a large number of neurons for behavioral correlations. This paper discusses several such advances in implantable hardware, magnetic resonance imaging of electrodes in situ, and data analysis software for multiple simultaneous signals.

A new, easy to construct electrode, microdrive and headstage for electrophysiological recording system which is specifically adapted for freely behaving mice is described. The system uses printed circuit boards and light, flexible cables to enable the animal's free movement for behavioral testing. A clip attachment system permits rapid and secure connection of the headstage and cables to the mi...

We discuss a solution to the problem of separating waveforms produced by multiple cells in an extracellular neural recording. We take an explicitly probabilistic approach, using latent-variable models of varying sophistication to describe the distribution of waveforms produced by a single cell. The models range from a single Gaussian distribution of waveforms for each cell to a mixture of hidde...

The fusion reactions involving deuterium are of great interest for the exploitation energy via magnetic-confinement devices. In classical thermodynamics, spontaneity a process is established through assessment change in Gibbs free energy. So far, feasibility nuclear has been characterized terms cross section and Q-value while entropic term (T ΔS) neglected. Such an assumption always justified f...