What is the primary function of consciousness in the nervous system? The answer to this question remains enigmatic, not so much because of a lack of relevant data, but because of the lack of a conceptual framework with which to interpret the data. To this end, we have developed Passive Frame Theory, an internally coherent framework that, from an action-based perspective, synthesizes empirically supported hypotheses from diverse fields of investigation. The theory proposes that the primary function of consciousness is well-circumscribed, (...) serving the 'somatic nervous system[. For this system, consciousness serves as a frame that constrains and directs skeletal muscle output, thereby yielding adaptive behavior. The mechanism by which consciousness achieves this is more counterintuitive, passive, and “low level” than the kinds of functions that theorists have previously attributed to consciousness. Passive frame theory begins to illuminate (a) what consciousness contributes to nervous function, (b) how consciousness achieves this function, and (c) the neuroanatomical substrates of conscious processes. Our untraditional, action-based perspective focuses on olfaction instead of on vision and is 'descriptive' (describing the products of nature as they evolved to be) rather than 'normative' (construing processes in terms of how they should function). Passive frame theory begins to isolate the neuroanatomical, cognitive-mechanistic, and representational (e.g., conscious contents) processes associated with consciousness. (shrink)

En este artículo se analiza la teoría para la toma de decisiones y se contrasta la valía de los dilemas morales para explicar los mecanismos deliberativos. Se sostiene que una estrategia de decisión exitosa es aquella que es capaz de realizar los movimientos racionales, adaptativos y necesarios para llegar a un fin programado. Una aspiración de las éticas normativas y descriptivas es elaborar una teoría de la decisión práctica, sin importar los análisis racionales del modo en que se llegue al (...) fin. El artículo plantea los procesos relacionados al cambio y a la retroalimentación sin encasillar la teoría de las decisiones en posturas deontológicas, utilitaristas o emocionales. Se examina la valía de los dilemas morales y algunas críticas recurrentes y se concluye que, personales o impersonales, los dilemas parecen no explicar la complejidad de los procesos deliberativos. This article analyzes the theory for decision making and contrasts the value of moral dilemmas to explain the deliberative mechanisms. It is argued that a successful decision strategy is one that is capable of performing the rational, adaptive and necessary movements to reach a programmed end. It suggests that the processes related to change and feedback can be useful but insufficient explanations if the theory of decisions is framed to deontological, utilitarian or emotional postures. The value of moral dilemmas and some recurrent criticisms are examined and it is concluded that, personal or impersonal, the dilemmas do not seem to explain the complexity of the deliberative processes. (shrink)

A motivational system approach to avoidance behavior is presented. According to this approach, a motivational state increases the probability of relevant response patterns and establishes the appropriate or “ideal” consummatory stimuli as positive reinforcers. In the case of feeding motivation, for example, hungry rats are likely to explore and gnaw, and to learn to persist in activities correlated with the reception of consummatory stimuli produced by ingestion of palatable substances. In the case of defense motivation, fearful rats are likely to (...) flee or freeze, and to learn to persist in activities correlated with consummatory stimuli produced by flight from a dangerous place. Defense system activation is distinct from alarm reactions. The latter prepare the animal for probable noxious events, involve relatively intense negative affect and extinguish rapidly in situations where the noxious event no longer occurs. In contrast, defense system activation potentiates innate and modified defense reactions, thus preparing the animal for possible, but not necessarily probable, noxious events; it involves little or no negative affect and extinguishes very slowly when the noxious event no longer occurs. With these assumptions and the resulting model we attempt to resolve several long-standing problems in avoidance learning, including the low correlation between negative affect and avoidance performance, differential rates of extinction for avoidance performance and conditioned emotional responses, and evidence that some avoidance responses are much more easily learned than others. In addition, the model has implications for the study of parallels between appetitive and aversive motivation, sign tracking in aversive conditioning, and orientation of flight responses. Historical antecedents and alternative approaches are discussed. (shrink)