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Spherical model of intellectual operations




E. N. Sokolov

Academician of RAS, Moscow

Intellectual operations are regarded in the framework of a spherical model of cognitive and executive processes. At the receptor level stimuli are encoded by combinations of their excitations constituting receptor excitation vectors with a length dependent on stimulus intensely.

In neuronal networks excitation vectors are normalized so that stimuli are represented on a hypersphere in a multidimensional space, constituting a cognitive map. Thus, color stimuli are projected on a hypersphere in the fourdimensional space. Cartesian coordinates of color points correspond with excitations of four color predetectors. The spherical coordinates characterize subjective attributes of colors: hue, lightness and saturation. Particular colors are encoded by excitations of color detectors. Categorization of colors depends on semantic units and color naming is realized by command neurons triggering articulating gestures.

Key words: vector code, predetector, detector, semantic unit, cognitive map, command neuron.

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