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La conciencia humana: integración y complejidad

La conciencia humana: integración y complejidad,Vicente M. Simón

La conciencia humana: integración y complejidad   (Citations: 1)
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epresentativa del momento presente; y la conciencia de orden superior, pr iva- tiva de los seres humanos y en la que aparece la noción del yo y la memoria simbólica en forma de len - guaje. Se describe, asimismo, la maquinaria neurológica propuesta para sustentar ambos tipos de conciencia y se tratan algunos de los dilemas que sur gen al considerar la relación entre ambas, espe - cialmente entre el lenguaje y la conciencia primaria. Tomando como base el modelo de Edelman, se analizan aspectos cla ve de la conciencia humana como son nuestra potente capacidad modeladora de la realidad, tanto espacial como temporal, y los procesos implicados en la toma de decisiones, así co - mo su posible sustrato neurofisiológico. Por último, se reco ge la nueva hipótesis de Tononi y Edelman (hipótesis del núcleo dinámico) en la que se plantea una explicación de la conciencia en términos de integración y de diferenciación, hipótesis que es capaz de sustentar, a ni vel neurofisiológico, la com - plejidad fenomenológica de las funciones estudiadas. Human Consciousness: Integration and Complexity. The purpose of this paper is to contribute to de - veloping models of consciousness that integrate both psychological and neurophysiological data in the field of conscious experience. It be gins by introducing the model of Edelman, which postulates two kinds of consciousnes: «Primary consciousness», common to several animal species, allows us to cr e- ate a «scene» of things of the world which is limited to the present moment; and «Higher-order cons- ciousness», existing only in humans, involves the notion of self and the phylo genetic appearance of language as a symbolic memory. The neurological outfit postulated for these types of consciousness is described succintly and some questions arising when considering the relationship between the two ar e dealt with, specially between langua ge and primary consciousness. Taking Edelman's model as a star - ting point, some key aspects of human consciousness are commented upon, such as its powerful abi - lity to build spatial as well as temporal models of reality and the process of decision making, with their presumed neurophysiological substrates. Finally, the recent hypothesis of the «dynamic core» (by To- noni and Edelman) is presented. It tries to explain consciousness in terms of inte gration and differen- tiation in the ner vous system, a hypothesis which seems, at the neurophysiolo gical level, to be a ble to account for the phenomenological complexity of the functions that ha ve been pr eviously specified.
Published in 2000.
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