The mechanisms underlying an effective propagation of high intensity information over a background of irregular firing and response latency in cognitive processes remain unclear. Here we propose a SSCCPI circuit to ad...
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The mechanisms underlying an effective propagation of high intensity information over a background of irregular firing and response latency in cognitive processes remain unclear. Here we propose a SSCCPI circuit to address this issue. We hypothesize that when a high-intensity thalamic input triggers synchronous spike events (SSEs), dense spikes are scattered to many receiving neurons within a cortical column in layer IV, many sparse spike trains are propagated in parallel along minicolumns at a substantially high speed and finally integrated into an output spike train toward or in layer Va. We derive the sufficient conditions for an effective (fast, reliable, and precise) SSCCPI circuit: (i) SSEs are asynchronous (near synchronous);(ii) cortical columns prevent both repeatedly triggering SSEs and incorrectly synaptic connections between adjacent columns;and (iii) the propagator in interneurons is temporally complete fidelity and reliable. We encode the membrane potential responses to stimuli using the nonlinear autoregressive integrated process derived by applying Newton's second law to stochastic resilience systems. We introduce a multithreshold decoder to correct encoding errors. Evidence supporting an effective SSCCPI circuit includes that for the condition, (i) time delay enhances SSEs, suggesting that response latency induces SSEs in high-intensity stimuli;irregular firing causes asynchronous SSEs;asynchronous SSEs relate to healthy neurons;and rigorous SSEs relate to brain disorders. For the condition (ii) neurons within a given minicolumn are stereotypically interconnected in the vertical dimension, which prevents repeated triggering SSEs and ensures signal parallel propagation;columnar segregation avoids incorrect synaptic connections between adjacent columns;and signal propagation across layers overwhelmingly prefers columnar direction. For the condition (iii), accumulating experimental evidence supports temporal transfer precision with millisecond fidelity
Forward error correction technique based on the optimization procedures for multithreshold decoding algorithms is *** advances as well as new opportunities of the multithreshold decoders for use in the systems working...
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Forward error correction technique based on the optimization procedures for multithreshold decoding algorithms is *** advances as well as new opportunities of the multithreshold decoders for use in the systems working at the Shannon's limit are *** of the multithreshold decoders for self-orthogonal binary and non-binary codes over Gaussian channels are *** results of BER performance of proposed decoder is shown to be close to the results provided by optimum total search methods.
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