Biomedical subjects
Publications and source records attributed to C G Aurell.
The perceptual model, discussed previously in Part II, is applied to the organization of the visual cortex in a search for "consciousness neurons," i.e., sources of sensations, images, and percepts. It is hypothesized that these three conscious phenomena emerge in the primary visual cortex, Area V1, possibly from neurons in its Layer 4.
The perceptual model described in a 1989 paper and regarded as Part I to the present paper is further specified, illustrated, and discussed especially where understanding will benefit from the conscious submind approach to information processing. Emotion is treated as "emotional perception," a concept useful for its structuring. An important restriction in the use of awareness in relation to consciousness is pointed out. A mechanism for attention is suggested.
In a previously presented perceptual model perception was assumed to be the result of two separate but coupled modes of consciousness, one sensory-based or outer and one memory-based or inner. Evidence was found for the assumption that the outer mode of consciousness is related to the primary projection areas of the sensory cortices. In the present paper the perceptual model is further integrated with the cognitive system while considering neuropsychological aspects. The two perceptual modes of consciousness, and one mode related to the experience of feelings, are considered to be the consciousness outlets of three functionally and physiologically distinguishable minds which cooperate or compete in the control of man's behavior.
Gibson's 'ecological approach to visual perception' is shown to be compatible with traditional memory-assisted perception, viz., if it is applied to automatic behavior.
A perceptual model, described in two earlier papers, is extended to include emotion. Interaction between the perceptual and emotive systems is assumed to take place on different levels of information processing, both with and without the involvement of consciousness. This allows a considerable variability in temporal order between emotion and percept.
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A model of human perception is proposed in which conscious awareness is assumed to be the result of two separate mechanisms each involving consciousness, one outer, sensori-produced, and one inner, conceptual. By mediation of flexible memory representations the sensory data of the outer consciousness give rise to a matched "copy" in the inner consciousness which conceptually organizes the former and also serves as input to the memory store. The model is applied to some perceptual problems in vision such as ambiguous stimuli, subjective contours, space perception, a case of metacontrast, and subliminal perception.
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