Results for 'Synapse'

15 found
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  1. From Biological Synapses to "Intelligent" Robots.Birgitta Dresp-Langley - 2022 - Electronics 11:1-28.
    This selective review explores biologically inspired learning as a model for intelligent robot control and sensing technology on the basis of specific examples. Hebbian synaptic learning is discussed as a functionally relevant model for machine learning and intelligence, as explained on the basis of examples from the highly plastic biological neural networks of invertebrates and vertebrates. Its potential for adaptive learning and control without supervision, the generation of functional complexity, and control architectures based on self-organization is brought forward. Learning without (...)
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  2. A theory of the epigenesis of neuronal networks by selective stabilization of synapses.Jean Pierre Changeux, Philippe Courrège & Antoine Danchin - 1973 - Proceedings of the National Academy of Sciences Usa 70 (10):2974-8.
    A formalism is introduced to represent the connective organization of an evolving neuronal network and the effects of environment on this organization by stabilization or degeneration of labile synapses associated with functioning. Learning, or the acquisition of an associative property, is related to a characteristic variability of the connective organization: the interaction of the environment with the genetic program is printed as a particular pattern of such organization through neuronal functioning. An application of the theory to the development of the (...)
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  3. Quantum propensities in the brain cortex and free will.Danko D. Georgiev - 2021 - Biosystems 208:104474.
    Capacity of conscious agents to perform genuine choices among future alternatives is a prerequisite for moral responsibility. Determinism that pervades classical physics, however, forbids free will, undermines the foundations of ethics, and precludes meaningful quantification of personal biases. To resolve that impasse, we utilize the characteristic indeterminism of quantum physics and derive a quantitative measure for the amount of free will manifested by the brain cortical network. The interaction between the central nervous system and the surrounding environment is shown to (...)
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  4. Apical amplification—a cellular mechanism of conscious perception?Tomas Marvan, Michal Polák, Talis Bachmann & William A. Phillips - 2021 - Neuroscience of Consciousness 7 (2):1-17.
    We present a theoretical view of the cellular foundations for network-level processes involved in producing our conscious experience. Inputs to apical synapses in layer 1 of a large subset of neocortical cells are summed at an integration zone near the top of their apical trunk. These inputs come from diverse sources and provide a context within which the transmission of information abstracted from sensory input to their basal and perisomatic synapses can be amplified when relevant. We argue that apical amplification (...)
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  5. Philosophy and Science, the Darwinian-Evolved Computational Brain, a Non-Recursive Super-Turing Machine & Our Inner-World-Producing Organ.Hermann G. W. Burchard - 2016 - Open Journal of Philosophy 6 (1):13-28.
    Recent advances in neuroscience lead to a wider realm for philosophy to include the science of the Darwinian-evolved computational brain, our inner world producing organ, a non-recursive super- Turing machine combining 100B synapsing-neuron DNA-computers based on the genetic code. The whole system is a logos machine offering a world map for global context, essential for our intentional grasp of opportunities. We start from the observable contrast between the chaotic universe vs. our orderly inner world, the noumenal cosmos. So far, philosophy (...)
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  6. Function, selection, and construction in the brain.Justin Garson - 2012 - Synthese 189 (3):451-481.
    A common misunderstanding of the selected effects theory of function is that natural selection operating over an evolutionary time scale is the only functionbestowing process in the natural world. This construal of the selected effects theory conflicts with the existence and ubiquity of neurobiological functions that are evolutionary novel, such as structures underlying reading ability. This conflict has suggested to some that, while the selected effects theory may be relevant to some areas of evolutionary biology, its relevance to neuroscience is (...)
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  7. Non-linear Analysis of Models for Biological Pattern Formation: Application to Ocular Dominance Stripes.Michael Lyons & Lionel G. Harrison - 1992 - In Frank Eeckman (ed.), Neural Systems: Analysis and Modeling. Springer. pp. 39-46.
    We present a technique for the analysis of pattern formation by a class of models for the formation of ocular dominance stripes in the striate cortex of some mammals. The method, which employs the adiabatic approximation to derive a set of ordinary differential equations for patterning modes, has been successfully applied to reaction-diffusion models for striped patterns [1]. Models of ocular dominance stripes have been studied [2,3] by computation, or by linearization of the model equations. These techniques do not provide (...)
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  8. How Subjects Can Emerge from Neurons.Eric LaRock & Mostyn Jones - 2019 - Process Studies 48 (1):40-58.
    We pose a foundational problem for those who claim that subjects are ontologically irreducible, but causally reducible (weak emergence). This problem is neuroscience’s notorious binding problem, which concerns how distributed neural areas produce unified mental objects (such as perceptions) and the unified subject that experiences them. Synchrony, synapses and other mechanisms cannot explain this. We argue that this problem seriously threatens popular claims that mental causality is reducible to neural causality. Weak emergence additionally raises evolutionary worries about how we’ve survived (...)
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  9. Cholinesterases preceding major tracts in vertebrate neurogenesis.Paul G. Layer - 1990 - Bioessays 12 (9):415-420.
    The role of acetylcholinesterase (AChE) in neurotransmission is well known. But long before synapses are formed in vertebrates, AChE is expressed in young postmitotic neuroblasts that are about to extend the first long tracts. AChE histochemistry can thus be used to map primary steps of brain differentiation. Preceding an possibly inducing AChE in avian brains, the closely related butyrylcholinesterase (BChE) spatially fore-shadows AChE-positive cell areas and the course of their axons. In particular, before spinal motor axons grow, their corresponding rostral (...)
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  10. Conceivability Arguments.Katalin Balog - 1998 - Dissertation, Rutgers University
    The dissertation addresses the mind-body problem, and in particular, the problem of how to fit phenomenal consciousness into the rest of reality. Phenomenal consciousness - the what it’s like feature of experience - can appear to the scientifically inclined philosopher to be deeply mysterious. It is difficult to understand how the swirl of atoms in the void, the oscillation of field values, the firing of synapses, or anything physical can add up to the smells, tastes, feelings, moods, and so forth (...)
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  11. Everyday Life and Imperial Thoughts.Jason Wakefield - 2013 - Dasein Project 1 (1).
    Freud’s 'The Psychopathology of Everyday Life' was one of the most widely translated and circulated works of German psychology in the last century. This psychoanalytic and clinical approach to analyzing the brain has now been superseded by neuro-scientific techniques of analysis. Once you master neuro-hacking data, you can broadcast people's private, internal thoughts (without their consent) and other brain waves – as an audio signal in a frequency of your choice. Synapse-hacking is juxtaposed with the heroic intellectual legacies of (...)
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    Immanuel Kant Und Die Medizin - Der Philosoph ALS Anthropologe, Arzt Und Patient.Hans Förstl - forthcoming - Heidelberg: Springer.
    Kant and Medicine - the Philosopher as Anthropologist, Physician and Patient. It remains uncertain whether the student Immanuel Kant (1724-1804) truly wanted to become a physician or only said this in order to please a sponsor. Due to his narrow chest and other typical weaknesses of a scholar he considered himself a hypochondriac and cautiously kept his distance from dangerous illnesses, especially those of the mind. He inspired his students - including Herder, Herz, Lenz and Hoffmann - far less with (...)
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  13. (1 other version)The Grossberg Code: Universal Neural Network Signatures of Perceptual Experience.Birgitta Dresp-Langley - 2023 - Information 14 (2):e82 1-17..
    Two universal functional principles of Grossberg’s Adaptive Resonance Theory [19] decipher the brain code of all biological learning and adaptive intelligence. Low-level representations of multisensory stimuli in their immediate environmental context are formed on the basis of bottom-up activation and under the control of top-down matching rules that integrate high-level long-term traces of contextual configuration. These universal coding principles lead to the establishment of lasting brain signatures of perceptual experience in all living species, from aplysiae to primates. They are re-visited (...)
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  14. Upholding Haitian Dignity: On Briefly Contextualizing Haiti’s Ongoing Crisis, Part One.Woodger G. Faugas - 2021 - Synapse 66 (1).
    During the summer of 2021, Jovenel Moïse, Haiti’s 58th president, succumbed to an internationally-coordinated assassination attempt carried out by Columbian mercenaries, and others. The head of state sustained a broken femur, fractured skull, and gunshot wounds, among other signs of trauma. Furthermore, his wife of 25 years, Martine, clung to life nearby, gravely-injured and pretending to have expired. This piece, at first, highlights the effects of foreign intervention on Haitian history. It then pinpoints the compounded obstacles that Haitian leadership must (...)
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  15. Why Haitian Refugee Patients Need Trauma-Informed Care.Woodger G. Faugas - 2022 - Synapse 66 (8).
    Owing to its grappling with a motley of intricate socioeconomic, as well as medico-legal, crises, Haiti has found itself bereft of some of its people, many of whom have had to leave the Caribbean country in search of improved lives elsewhere. Receiving some of the Haitian refugees fleeing abject poverty, unemployment, and other harms and barriers has been the United States, one of Haiti's northern neighbors and a country that has played an outcome-determinative, if not outsized, role in steering the (...)
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