106 research outputs found

    Quantitative and qualitative sources of affect : how unexpectedness and valence relate to pleasantness and preference

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    Running title: Valence potential.Bibliography: leaves 34-37Supported in part by the National Institute of Education under contract no. HEW-NIE-C-400-76-011

    Beyond Covalent Crosslinks: Applications of Supramolecular Gels

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    Traditionally, gels have been defined by their covalently cross-linked polymer networks. Supramolecular gels challenge this framework by relying on non-covalent interactions for self-organization into hierarchical structures. This class of materials offers a variety of novel and exciting potential applications. This review draws together recent advances in supramolecular gels with an emphasis on their proposed uses as optoelectronic, energy, biomedical, and biological materials. Additional special topics reviewed include environmental remediation, participation in synthesis procedures, and other industrial uses. The examples presented here demonstrate unique benefits of supramolecular gels, including tunability, processability, and self-healing capability, enabling a new approach to solve engineering challenges. Keywords: supramolecular gel; self-assembly; gels; applied soft matte

    State-Dependent Memory: Neurobiological Advances and Prospects for Translation to Dissociative Amnesia

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    In susceptible individuals, overwhelming traumatic stress often results in severe abnormalities of memory processing, manifested either as the uncontrollable emergence of memories (flashbacks) or as an inability to remember events (dissociative amnesia, DA) that are usually, but not necessarily, related to the stressful experience. These memory abnormalities are often the source of debilitating psychopathologies such as anxiety, depression and social dysfunction. The question of why memory for some traumatic experiences is compromised while other comparably traumatic experiences are remembered perfectly well, both within and across individuals, has puzzled clinicians for decades. In this article, we present clinical, cognitive, and neurobiological perspectives on memory research relevant to DA. In particular, we examine the role of state dependent memory (wherein memories are difficult to recall unless the conditions at encoding and recall are similar), and discuss how advances in the neurobiology of state-dependent memory (SDM) gleaned from animal studies might be translated to humans

    Dynamic facial expressions of emotion transmit an evolving hierarchy of signals over time

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    Designed by biological and social evolutionary pressures, facial expressions of emotion comprise specific facial movements to support a near-optimal system of signaling and decoding. Although highly dynamical, little is known about the form and function of facial expression temporal dynamics. Do facial expressions transmit diagnostic signals simultaneously to optimize categorization of the six classic emotions, or sequentially to support a more complex communication system of successive categorizations over time? Our data support the latter. Using a combination of perceptual expectation modeling, information theory, and Bayesian classifiers, we show that dynamic facial expressions of emotion transmit an evolving hierarchy of “biologically basic to socially specific” information over time. Early in the signaling dynamics, facial expressions systematically transmit few, biologically rooted face signals supporting the categorization of fewer elementary categories (e.g., approach/avoidance). Later transmissions comprise more complex signals that support categorization of a larger number of socially specific categories (i.e., the six classic emotions). Here, we show that dynamic facial expressions of emotion provide a sophisticated signaling system, questioning the widely accepted notion that emotion communication is comprised of six basic (i.e., psychologically irreducible) categories, and instead suggesting four

    Names, descriptions, and pragmatics

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    Includes bibliographical referencesSupported in part by the National Institute of Educatio

    Some psycholinguistic aspects of metaphor

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    Includes bibliograph

    Remembering and understanding jaberwocky and small-talk

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    Bibliography: leaves 30-3

    The influence of analogy in children's acquisition of new information from text : an exploratory study

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    Running title: The influence of analogyIncludes bibliographical references (leaves 14-15)Supported in part by the National Institute of Education under contract no. HEW-NIE-C-400-76-011

    The emergence of the literal-metaphorical-anomalous distinction in young children

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    Bibliography: leaf 21-22Research was supported in part by the National Institute of Education under contract no. HEW-NIE-C-400-76-011
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