Abstract
Mesoscopic patterns of neural activity were sought in multichannel EEGs of rabbits that were trained to respond to conditioned stimuli (CSs) in visual, auditory and somatic modalities. Spatiotemporal patterns were sought of oscillations in the beta and gamma ranges. The techniques required for preprocessing EEGs in search of global patterns were diametrically opposed to those needed for localization of modular EEG signals. Frames were found in the form of intermittent spatial patterns of phase and amplitude modulation (AM and PM) of carrier waves in beta and gamma ranges that served to classify EEG frames with respect to CSs. A model based on the intentional action–perception cycle is proposed to complement the information processing model.
Highlights
Humans observe and grasp complex events and situations by means of expectations that have the form of theories
Each carrier wave is modulated in space and time by a spatial pattern of amplitude, A(t), that is expressed by a N!1 column vector, and a spatial pattern of phase modulation, F(t), in radians
EEG is notoriously opaque to interpretation and understanding; commonly it is dismissed as noise and is removed by ensemble averaging
Summary
Humans observe and grasp complex events and situations by means of expectations that have the form of theories. The classic case in physics is the wave– particle duality, in which the choice of one or two slits determines the outcome of the observation. A similar situation holds for the classic debates among proponents of competing theories about neocortical dynamics: localization vs mass action. Cortex is a collection of modules like a piano keyboard, each with its structure, signal, and contribution to behavior. The neocortex is a continuous sheet of neuropil in each cerebral hemisphere, which embeds specialized architectures that were induced by axon tips arriving from extracortical sources during embryological development. Cooperative domains of varying size emerge within each hemisphere during behavior that includes the specialized
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