4,225 research outputs found

    Perspectives on the Neuroscience of Cognition and Consciousness

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    The origin and current use of the concepts of computation, representation and information in Neuroscience are examined and conceptual flaws are identified which vitiate their usefulness for addressing problems of the neural basis of Cognition and Consciousness. In contrast, a convergence of views is presented to support the characterization of the Nervous System as a complex dynamical system operating in the metastable regime, and capable of evolving to configurations and transitions in phase space with potential relevance for Cognition and Consciousness

    Bimodal buckling governs human fingers luxation

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    Equilibrium bifurcation in natural systems can sometimes be explained as a route to stress shielding for preventing failure. Although compressive buckling has been known for a long time, its less-intuitive tensile counterpart was only recently discovered and yet never identified in living structures or organisms. Through the analysis of an unprecedented all-in-one paradigm of elastic instability, it is theoretically and experimentally shown that coexistence of two curvatures in human finger joints is the result of an optimal design by nature that exploits both compressive and tensile buckling for inducing luxation in case of traumas, so realizing a unique mechanism for protecting tissues and preventing more severe damage under extreme loads. Our findings might pave the way to conceive complex architectured and bio-inspired materials, as well as next generation artificial joint prostheses and robotic arms for bio-engineering and healthcare applications

    Eye and hand movements disrupt attentional control

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    Voluntary attentional control is the ability to selectively focus on a subset of visual information in the presence of other competing stimuli–a marker of cognitive control enabling flexible, goal-driven behavior. To test its robustness, we contrasted attentional control with the most common source of attentional orienting in daily life: attention shifts prior to goal-directed eye and hand movements. In a multi-tasking paradigm, human participants attended at a location while planning eye or hand movements elsewhere. Voluntary attentional control suffered with every simultaneous action plan, even under reduced task difficulty and memory load–factors known to interfere with attentional control. Furthermore, the performance cost was limited to voluntary attention: We observed simultaneous attention benefits at two movement targets without attentional competition between them. This demonstrates that the visual system allows for the concurrent representation of multiple attentional foci. Since attentional control is extremely fragile and dominated by premotor attention shifts, we propose that action-driven selection plays the superordinate role for visual selection

    Homosexuality and the Two-Way Test of Moral Validity of Sexual Affairs

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    In this article, I examined the various ethical problems raise to morally discount homosexuality. I found that so far no moral argument proved adequate ground to discount homoeroticism. However, I have developed the ‘Two-Way Test’ (TWT) by which the social acceptability of any sexual relation should be tested for moral validity. From the analysis, homosexuality was found to have failed the test. That is to say, homosexuality is not a morally valid act. Despite that, the immoral status of homosexuality did not constitute sufficient ground for its criminalization, because not all immoral acts are criminalized but only those that impede the right or liberty of others. In conclusion, the paper submitted that although homosexuality had failed the TWT it does not call for violence, criminalization and discrimination against persons of homosexual orientation but that homosexuals should be accommodated without deliberately discouraging heterosexual relationship. My advocacy for sexual tolerance is based on the grounds that ongoing biological research has so far shown the phenomenon as biological reality beyond the personal control of most homosexuals

    Touch Screen Theory

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    Technology companies claim to connect people through touchscreens, but by conflating physical contact with emotional sentiments, they displace the constructed aspects of devices and women and other oppressed individuals' critiques of how such technologies function. Technology companies and device designers correlate touchscreens and online sites with physical contact and emotional sentiments, promising unmediated experiences in which the screen falls away in favor of visceral materiality and connections. While touchscreens are key elements of most people's everyday lives, critical frameworks for understanding the embodied experiences of using them are wanting. In Touch Screen Theory, Michele White focuses on the relation between physically touching and emotionally feeling to recenter the bodies and identities that are empowered, produced, and displaced by these digital technologies and settings. Drawing on detailed cases and humanities methods, White shows how and why gender, race, and sexuality should be further analyzed in relation to touchscreen use and design. White delves into such details as how women are informed that their bodies and fingernails are not a fit for iPhones, how cellphone surfaces are correlated with skin and understood as erotic, the ways social networks use heart buttons and icons to seem to physically and emotionally connect with individuals, how online references to feminine and queer feelings are resisted by many men, and how women producers of autonomous sensory meridian response (ASMR) videos use tactile strategies and touchscreens to emotionally bond with viewers. Proposing critical methods for studying touchscreens and digital engagement, Touch Screen Theory expands a variety of research areas, including digital and internet cultures, hardware, interfaces, media and screens, and popular culture

    A study of manual control methodology with annotated bibliography

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    Manual control methodology - study with annotated bibliograph
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