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A new approach to detect the coding rule of the cortical spiking model in the information transmission

NEURAL NETWORKS 2018年 99卷 68-78页

作者： Nazari, Soheila Faez, Karim Janahmadi, Mahyar Amirkabir Univ Technol Dept Elect Engn Tehran Iran Shahid Beheshti Univ Med Sci Med Sch Neurosci Res Ctr Tehran Iran Shahid Beheshti Univ Med Sci Med Sch Dept Physiol Tehran Iran

Investigation of the role of the local field potential (LFP) fluctuations in encoding the received sensory information by the nervous system remains largely unknown. On the other hand, transmission of these translation rules in information transmission between the structure of sensory stimuli and the cortical oscillations to the bio-inspired artificial neural networks operating at the efficiency of the nervous system is still a vague puzzle. In order to move towards this important goal, computational neuroscience tools can be useful so, we simulated a large-scale network of excitatory and inhibitory spiking neurons with synaptic connections consisting of AMPA and GABA currents as a model of cortical populations. Spiking network was equipped with spike-based unsupervised weight optimization based on the dynamical behavior of the excitatory (AMPA) and inhibitory (GABA) synapses using Spike Timing Dependent Plasticity (STDP) on the MNIST benchmark and we specified how the generated LFP by the network contained information about input patterns. The main result of this article is that the calculated coefficients of Prolate spheroidal wave functions (PSWF) from the input pattern with mean square error (MSE) criterion and power spectrum of LFP with maximum correntropy criterion (MCC) are equal. The more important result is that 82.3% of PSWF coefficients are the same as the connecting weights of the cortical neurons to the classifying neurons after the completion of the training process. Higher compliance percentage of coefficients with synaptic weights (82.3%) gives the expectance us that this coding rule will be able to extend to biological systems. Eventually, we introduced the cortical spiking network as an information channel, which transmits the information of the input pattern in the form of PSWF coefficients to the power spectrum of the output generated LFP. (c) 2017 Elsevier Ltd. All rights reserved.

关键词： Cortical spiking network AMPA and GABA current PSWF Power spectrum of LFP information coding

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"Acrostic" Encryption: Stress-Manipulation on information Display

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ADVANCED FUNCTIONAL MATERIALS 2023年第31期33卷

作者： Bai, Jing Shi, Zixing Jiang, Xuesong Shanghai Jiao Tong Univ Frontiers Sci Ctr Transformat Mol Sch Chem & Chem Engn State Key Lab Met Matrix Composite Mat Shanghai 200240 Peoples R China

Polymers are ideal materials for information printing and storage and encryption through multiple channels. In this study, the visible color, fluorescent, and stress-color are combined to print information. Stress-color is achieved using an acid-tunable dynamic reaction between a beta-diketone and an amine group via the light-induced transformation of spiropyran (SP), which also directly prints the visible color information. The color and fluorescent patterns are stable via the reaction between SP and amine released from a dynamic enaminone structure. By achieving the stress-color information coding, the data is further encrypted in an "acrostic" form by programmatically coding the information at several stages. The pattern or information in stress-color is closely related to the decoding strain, whereas the fluorescent and color patterns display all the information written in various strains. As a result, the secret information is hidden among public data, resulting in acrostic encryption.

关键词： acrostic information coding spiropyran stress-color

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Editorial: Advances in acoustic/elastic wave sensing for information processing

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FRONTIERS IN PHYSICS 2023年 10卷

作者： Lee, Taehwa Shen, Chen He, Qingbo Toyota Motor North Amer Toyota Res Inst North Amer Ann Arbor MI 48103 USA Rowan Univ Dept Mech Engn Glassboro NJ USA Shanghai Jiao Tong Univ State Key Lab Mech Syst & Vibrat Shanghai Peoples R China

In this Research Topic, a total of five papers (three research papers and two review papers) are presented in various fields of metamaterials including photoacoustic waves of a fluidic elliptic cylinder, metamaterial characterization from far-field acoustic wave measurements, sensing with sound-enhanced acoustic metamaterials for fault diagnosis, coupled acoustic resonance for wave control and sensing, and spatial information coding with artificially engineered structures for acoustic and elastic wave *** represents an important technology in biomedical imaging and treatment. For example, photoacoustic imaging has been widely used for the human body, including the three-dimensional visualization of vascular systems. To extend the technique for detailing the cross-section changes of blood microvessels, Zhang et al. reported the development of an analytic solution to study the photoacoustic wave generation from a fluidic cylinder based on the cylindrical models in blood vessel photoacoustic imaging. A finite element model is also established to verify the results and to investigate various physics processes. It is found that the angular dependence of photoacoustic power spectra may be used to track the shape changes of the elliptic blood *** resonances are a key component to subwavelength wave control, significant efforts has been devoted to resonant metamaterials for compact systems. In-depth understanding of coupled resonance systems are benefitical for gaining further insights. In this regard, Lee et al. reviewed key articles related to resonance coupling for wave control and sensing. Not only was the review discussing about relevant articles for various coupling phenomena, but also it was introducing future perspectives of coupled resonance *** enabling unprecendented control of waves have a property not found in nature. Characterizing the material properties of unknown media such as metamaterials is challenging even with ty

关键词： wave sensing resonance coupling metamaterial information coding information processing machine learning-based sensing

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Microfluidic spinning of editable polychromatic fibers

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JOURNAL OF COLLOID AND INTERFACE SCIENCE 2020年 558卷 115-122页

作者： Zhang, Wei Hou, Chengyi Li, Yaogang Zhang, Qinghong Wang, Hongzhi Donghua Univ Coll Mat Sci & Engn State Key Lab Modificat Chem Fibers & Polymer Mat Int Joint Lab Adv Fiber & Low Dimens Mat Shanghai 201600 Peoples R China Donghua Univ Coll Mat Sci & Engn Engn Res Ctr Adv Glasses Mfg Technol Shanghai 201600 Peoples R China

Chromatic fibers that change color in response to external stimuli are expected to be widely used in various applications such as anti-counterfeiting, military camouflage, and wearable displays. Advanced chromatic fibers with polychromatic and editable color properties behavior are strongly desired for practical applications but have not yet been realized using existing spinning technologies. Here, we present the low-cost, continuous microfluidic spinning of editable polychromatic polylactide (PLA) fibers. The structure and performance of the polychromatic PLA fibers were precisely controlled by adjusting the parameters used in microfluidic spinning. The structure of the as-spun products evolved through three different stages based on the editable encapsulation of functional materials into the PLA matrix. Fibers with versatile performance were achieved. A beaded polychromatic PLA fiber showed the possibility to delivery coded information through its editable chromatic behavior. A core-shell polychromatic PLA fiber showed good mechanical properties and knittability, which make it promising to fabricate smart color-changing textiles. (C) 2019 Published by Elsevier Inc.

关键词： Microfluidic spinning Editable polychromatism information coding Thermochromic PLA fibers

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information filtering by coincidence detection of synchronous population output: analytical approaches to the coherence function of a two-stage neural system

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BIOLOGICAL CYBERNETICS 2020年第3期114卷 403-418页

作者： Bostner, Ziga Knoll, Gregory Lindner, Benjamin Humboldt Univ Phys Dept Newtonstr 15 D-12489 Berlin Germany Bernstein Ctr Computat Neurosci Berlin Philippstr 13Haus 2 D-10115 Berlin Germany

information about time-dependent sensory stimuli is encoded in the activity of neural populations;distinct aspects of the stimulus are read out by different types of neurons: while overall information is perceived by integrator cells, so-calledcoincidence detectorcells are driven mainly by the synchronous activity in the population that encodes predominantly high-frequency content of the input signal (high-pass information filtering). Previously, an analytically accessible statistic called the partial synchronous output was introduced as a proxy for the coincidence detector cell's output in order to approximate its information transmission. In the first part of the current paper, we compare the information filtering properties (specifically, the coherence function) of this proxy to those of a simple coincidence detector neuron. We show that the latter's coherence function can indeed be well-approximated by the partial synchronous output with a time scale and threshold criterion that are related approximately linearly to the membrane time constant and firing threshold of the coincidence detector cell. In the second part of the paper, we propose an alternative theory for the spectral measures (including the coherence) of the coincidence detector cell that combines linear-response theory for shot-noise driven integrate-and-fire neurons with a novel perturbation ansatz for the spectra of spike-trains driven by colored noise. We demonstrate how the variability of the synaptic weights for connections from the population to the coincidence detector can shape the information transmission of the entire two-stage system.

关键词： information coding Synchronization Coincidence detection Neural computation

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Technology of Composite Code Forming in The Spatial-Spectral Description Significant Microsegments 15

Technology of Composite Code Forming in The Spatial-Spectral...

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15th International Conference on Advanced Trends in Radioelectronics, Telecommunications and Computer Engineering (TCSET)

作者： Barannik, Vladimir Fustii, Vadym Babenko, Yurii Himenko, Victoriya Hahanova, Anna Kharkiv Natl Air Force Univ Kharkiv Ukraine Taras Shevchenko Natl Univ Kyiv Kiev Ukraine Kharkov Natl Univ Radio Elect Kharkiv Ukraine

ISBN: (纸本)9781728155661

A method of composite coding of a significant microsegment of video frame at the codogram level of its syntax representation in the spectral space has been developed by constructing sequences of code structures of uniform length. The method of composite coding based on filling out redundant codogram sequences has been further developed. The distinctive features of the method are that single code designs are built for the codograms of significant microsegments of the video frame in spectral space using local-positional systems, where: positional-basic component is codogram of significant component of transformation, positional-complementary codogram - codogram lengths of chains zero component of the transformation. This method can be used in addition to JPEG, the modification itself will be an insert after DCT and quantization.

关键词： information coding video processing component coding

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Novel systematic mathematical computation based on the spiking frequency gate (SFG): Innovative organization of spiking computer

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information SCIENCES 2019年 474卷 221-235页

作者： Nazari, Soheila Faez, Karim Amirkabir Univ Technol Dept Elect Engn Tehran Iran Kermanshah Univ Med Sci Nano Drug Delivery Res Ctr Kermanshah Iran

The idea that the brain is composed of logical gates similar to IP cores of today's computers were provided by McCulloch and Pitts in 1943. In this paper, six structures for the interaction of dynamic neurons have been proposed to create neural circuits with spike coding that operate similarly to Boolean gates. It was concluded that the network of the dynamic model of spiking neurons and synapses called spiking frequency gates (SFG) can emulate the operations of digital gates AND, OR, NOT, NOR, XOR, and NAND. Also, an attempt was made to construct complex spiking circuits like full-adder, multiplexer, and arithinetic-logic-unit using cascade connections of SFGs. Extending simple designs to more complex spiking circuits can continue in order to access sophisticated computing tools based on SFGs. SFGs are not limited to zero and one and respond to the continuous range of spike train frequencies. Therefore, the information coding of SFGs is more powerful than Boolean gates. This paper illustrates a novel Boolean computation platform in a neural-like manner, which can provide a potential and clear horizon for designing neural circuits with complex applications. We hope that our results will lead to a deeper comprehension of the brain's functionalities and the development of new systematic methods based on the proposed spiking approach of Boolean logic gates. (C) 2018 Elsevier Inc. All rights reserved.

关键词： Spiking frequency gates Boolean computation Spiking circuit information coding Pattern recognition

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Specialized Computer System Controlling the Technological Parameters of the Drilling Rig 15

Specialized Computer System Controlling the Technological Pa...

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15th IEEE International Conference on the Experience of Designing and Application of CAD Systems (CADSM)

作者： Shyrmovska, Nadiia Voronych, Artur Zaiachuk, Yaroslav Karpash, Maksym Lazoriv, Olha Ivano Frankivsk Natl Tech Univ Oil & Gas Dept Comp Syst & Networks Ivano Frankivsk Ukraine Ivano Frankivsk Natl Tech Univ Oil & Gas Dept Energy Management & Tech Diagnost Ivano Frankivsk Ukraine

ISBN: (纸本)9781728100531

Systematized and researched characteristics of quasi-stationary oil and gas objects complex on the example of industrial drilling plants. As a result, requirements for the implementation of algorithms and special processors for performing diagnostic functions of quasi-stationary objects are formed. The algorithm of identification of states of quasi-stationary objects on the basis of special codes is developed. The technique is proposed besides the compact coding of a set of technological parameters of drilling states in the form of structured codes that carry information about the number, time and planned economic data on the example of drilling processes.

关键词： Control of technological parameters drilling rig information coding bar code

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Sensory and Motor information in Primary Motor Cortical Neurons During Arm Reaching To a Moving Target

Sensory and Motor Information in Primary Motor Cortical Neur...

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International Winter Workshop on Brain-Computer Interface (BCI)

作者： Soyoung Chae Taehyung Kim Sung-Phil Kim Seong-Min Kim Jeong-Woo Sohn Ulsan National Institute of Science and Technology Ulsan Republic of Korea College of Medicine Catholic Kwandong University Incheon Republic of Korea

ISBN: (数字)9781728147079

ISBN: (纸本)9781728147086

Sensory information such as vision is essential to make movements. Primary motor cortex (M1) is connected to various parts of the brain and receives sensory information anatomically and functionally. However, it has not been much studied how motor cortical neurons process sensory information in limb movements. Thus, we analyzed the firing activity of primary motor cortical (M1) neurons in a monkey while it reached arms to grab a moving target. We could cluster M1 neurons into two classes depending on which type of information they encoded - kinematic or sensory information. From single neuron to multi neuron levels, these classes of neurons revealed different information and roles in reaching. Especially, divergence of their dynamical activities in a low-dimensional space showed distinguishable patterns - sensory information encoding neurons diverged earlier, followed by that of movement information encoding neurons depending on follow-up movement. Our results suggest that differences in roles and temporal windows whose neuronal clusters optimized were different among same cortical areas thus it needs to differentiate neuronal type in functionally when build BMI decoder.

关键词： motor cortex movement sensory system motor system sensory system motor system Primary Motor Cortex Sensation Neurons Movements information primary motor Arm spiral arm Cortex of kidney information coding limb movement Brain Part

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Cognition as a Window into Neuronal Population Space

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ANNUAL REVIEW OF NEUROSCIENCE, VOL 41 2018年第1期41卷 77-+页

作者： Ruff, Douglas A. Ni, Amy M. Cohen, Marlene R. Univ Pittsburgh Dept Neurosci Pittsburgh PA 15213 USA Univ Pittsburgh Ctr Neural Basis Cognit Pittsburgh PA 15213 USA

Understanding how cognitive processes affect the responses of sensory neurons may clarify the relationship between neuronal population activity and behavior. However, tools for analyzing neuronal activity have not kept up with technological advances in recording from large neuronal populations. Here, we describe prevalent hypotheses of how cognitive processes affect sensory neurons, driven largely by a model based on the activity of single neurons or pools of neurons as the units of computation. We then use simple simulations to expand this model to a new conceptual framework that focuses on subspaces of population activity as the relevant units of computation, uses comparisons between brain areas or to behavior to guide analyses of these subspaces, and suggests that population activity is optimized to decode the large variety of stimuli and tasks that animals encounter in natural behavior. This framework provides new ways of understanding the ever-growing quantity of recorded population activity data.

关键词： information coding visual cortex cognition attention spike count correlations noise correlations

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