Background and Purpose: This work develops the BET and signs theory as a
complement to the genetic DNA code. It explains in a new way the learning and
information processing in neural networks. The neural network generates various Brain
Event Trains, BET. The network’s best BET is the best thing that it can do. BETs occur
simultaneously at different points in the brain and they form the Signs BILO, COMET,
SAVA, CON, communication patterns, verbal stories, mnemonic measurement and
compression, mind, perception and consciousness.
Material and Methods: The brain generates various event trains using internal
systems: univibrator, one-shot, and other electrochemical brain units. The event trains
participate in the Prefrontal Cortex, Thalamus, Basal ganglion loops. The theory and the
computer model explain the BET, BILO, COMET, SAVA and CON interactions in the
learning, reasoning and consciousness.
Results: The neuron has resistive and capacitive properties: it allows selective flow of
ions; and also it can store charges. The resulting charging and recovering time constants
determine the flow of voltages. This is a base of the neural monostable systems,
memory and learning. The monostable system, after being triggered, is in the quasi
stable state. Usually the triggering of the system is repeated when the capacitor voltage
reaches its stationary value. But if triggered at random, the system can receive the
triggering signal during the recovery period, when the capacitor voltage is different
from the stationary value. The brain event trains and signs are formed, and explained by
the BET, BILO, COMET, SAVA and CON laws.
Conclusions: By adjusting the rate of triggering and the internal time constants, brain
generates various brain event trains: Poisson; almost Poisson; uniform distribution;
almost periodic. Many event trains are active simultaneously in the brain and mind
tissue. The time intervals of trains cover a broad range from 0 to 1225 ms, with the
peaks in 3,6; 25; 175 and 1225 ms. These event trains support the links between the
brain agents. The links and the agents support the brain functions in the Self
Organization SO of Understanding U, Consciousness C, Emotions E and Knowledge K.
This is a nested, fractal, dynamic, fuzzy loop of the trains and signs. The brain signs are
the pieces of mosaic used to build the mind. The assemblage of Genetic Signs is a crop
of the signs developed through evolution and stored in DNA. The assemblage of
Learned Signs is a crop of personal and of learned experience stored in the long term
memory. The genetic and learned signs are stored in the dispersed neural networks: in
25 billion of neurons; some of which with thousands of synapses; hence with many
thousands of billions interconnections; with the prefrontal cortex large pyramidal
neurons; with high arborisation and spine density. The Consciousness content and
certainty are dispersed over the cortex. This is why the lesion of prefrontal lobes
disintegrates the sequences, but preserves the fragments. The theory, with over 100
equations, is in excellent agreement with the experimental data, for both, human and
animal brains.
Keywords: Brain, mind, event train, poisson train, uniform train, periodic train,
brain mind signs, genetic signs, learned signs, consciousness, τ = tau.