  We propose a neural model of multi-spin interacting system simulating neurons
that interact each other through the surroundings. In such open system
approach, we consider the neurons coupled with their surroundings including the
axons connecting between neurons and the glial cells which distribute around
the neurons. The surrounding environment is physically modeled as a collection
of all kinds of vibrational modes. By solving the dynamics of neurons, we
analyze the neural collective behavior. The action potential is taken into
account for simulating the environmental effect from the surroundings, which
mimics the neural firing mechanism. We find that this model can generate random
neuron-neuron interactions and is proper to describe the process of information
transmission in the nervous system. The physical meaning behind the scene can
also be explained.
