Langevin machine: a neural network based on stochastically justifiable sigmoidal function.

abstract：:We have developed two algorithms that construct a simultaneous functional order in a collection of neural elements using purely functional relations. The input of the first algorithm is a matrix describing the total of covariances of signals carried by the members of the neural collection. The second algorithm proceed...

journal_title：Biological cybernetics

authors： Toet A,Blom J,Koenderink JJ

更新日期：1987-01-01 00:00:00

abstract：:Flies have the capability to visually track small moving targets, even across cluttered backgrounds. Previous computational models, based on figure detection (FD) cells identified in the fly, have suggested how this may be accomplished at a neuronal level based on information about relative motion between the target a...

journal_title：Biological cybernetics

authors： Higgins CM,Pant V

更新日期：2004-12-01 00:00:00

abstract：:It is shown that the models for the transduction process in photoreceptors which treat latency and amplification as integrated phenomena ("integrated models") yield time scales for single photon signals ("quantum bumps") which distinctly conflict with the experimentally observed ones for the ventral nerve photorecepto...

journal_title：Biological cybernetics

authors： Schnakenberg J

更新日期：1989-01-01 00:00:00

abstract：:An important step in visual processing is the segregation of objects in a visual scene from one another and from the embedding background. According to current theories of visual neuroscience, the different features of a particular object are represented by cells which are spatially distributed across multiple visual ...

journal_title：Biological cybernetics

authors： Schillen TB,König P

更新日期：1994-01-01 00:00:00

abstract：:A novel artificial neural network, derived from neurobiological observations, is described and examples of its performance are presented. This DYnamically STable Associative Learning (DYSTAL) network associatively learns both correlations and anticorrelations, and can be configured to classify or restore patterns with...

journal_title：Biological cybernetics

authors： Alkon DL,Blackwell KT,Barbour GS,Rigler AK,Vogl TP

更新日期：1990-01-01 00:00:00

abstract：:We analyze the effect of weak-noise-induced transitions on the dynamics of the FitzHugh-Nagumo neuron model in a bistable state consisting of a stable fixed point and a stable unforced limit cycle. Bifurcation and slow-fast analysis give conditions on the parameter space for the establishment of this bi-stability. In ...

journal_title：Biological cybernetics

authors： Yamakou ME,Jost J

更新日期：2018-10-01 00:00:00

abstract：:A method is proposed to determine the rigid structure as well as the three dimensional motion of an object from a sequence of orthographically projected images. It is assumed that the velocities as well as the positions of the points attached to the object are observable in the images. The "instantaneous rigidity cond...

journal_title：Biological cybernetics

authors： Sugie N,Inagaki H

更新日期：1984-01-01 00:00:00

abstract：:Arthropods as well as mammals are able to return straight home after a random search excursion under conditions that are designed to exclude all external cues. After a brief clarification of the terminology, two principal systems of information processing that can achieve this performance are introduced and analysed: ...

journal_title：Biological cybernetics

authors： Mittelstaedt H

更新日期：2000-09-01 00:00:00

abstract：:In vision of everyday scenes, features requiring detection are frequently observed in the presence of suprathreshold background structures. Detection of such features is a contrast discrimination task and is often necessary for the subsequent process of recognition. In order to provide a description of this task, cont...

journal_title：Biological cybernetics

authors： Burton GJ

更新日期：1981-01-01 00:00:00

abstract：:The membrane excitability changes as well as the underlying mechanisms of these changes in a normal and in a systematically paranodally demyelinated nerve fibre have been investigated by paired stimulation during the first 30 ms of the recovery cycle. The ionic current kinetics determining the observed changes in the ...

journal_title：Biological cybernetics

authors： Stephanova DI

更新日期：1989-01-01 00:00:00

abstract：:Within a wide class of multichannel models of the visual system it is suggested that spatial distributions of luminance are processed by the independent activation of grating detectors, or spatial frequency channels. Probability summation is often described in terms of Quick's nonlinear pooling model [Quick RF (1974) ...

journal_title：Biological cybernetics

authors： Meinhardt G

更新日期：1999-09-01 00:00:00

abstract：:A system of coupled bistable Hopf oscillators with an external periodic input source was used to model the ability of interacting neural populations to synchronize and desynchronize in response to variations of the input signal. We propose that, in biological systems, the settings of internal and external coupling str...

journal_title：Biological cybernetics

authors： Schwarz J,Sieck A,Dangelmayr G,Stevens A

更新日期：2000-03-01 00:00:00

abstract：:The previous companion paper describes the initial (seed) schema architecture that gives rise to the observed prey-catching behavior. In this second paper in the series we describe the fundamental adaptive processes required during learning after lesioning. Following bilateral transections of the hypoglossal nerve, an...

journal_title：Biological cybernetics

authors： Corbacho F,Nishikawa KC,Weerasuriya A,Liaw JS,Arbib MA

更新日期：2005-12-01 00:00:00

abstract：:Taste buds endure extreme changes in temperature, pH, osmolarity, so on. Even though taste bud cells are replaced in a short span, they contribute to consistent taste reception. Each taste bud consists of about 50 cells whose networks are assumed to process taste information, at least preliminarily. In this article, w...

journal_title：Biological cybernetics

authors： Tateno K,Igarashi J,Ohtubo Y,Nakada K,Miki T,Yoshii K

更新日期：2011-07-01 00:00:00

abstract：:We propose a mathematical model of the human hypothalamus-anterior pituitary-thyroid system regulating basal metabolism, and practice computer simulation concerning primary thyropathy such as Graves' disease, hypothyroidism, T4-toxicosis and T3-toxicosis by use of this model. In order to throw light on properties of t...

journal_title：Biological cybernetics

authors： Hatakeyama T,Yagi H

更新日期：1985-01-01 00:00:00

abstract：:The idea that a sparse representation is the computational principle of visual systems has been supported by Olshausen and Field [Nature (1996) 381: 607-609] and many other studies. On the other hand neurons in the inferotemporal cortex respond to moderately complex features called icon alphabets, and such neurons res...

journal_title：Biological cybernetics

authors： Hashimoto W,Kurata K

更新日期：2000-08-01 00:00:00

abstract：:When human subjects are presented with a pair of visual targets that alternate periodically, they track the targets with rapid eye movements known as saccades. In previous work we demonstrated that at low pacing rates (<0.5 Hz), saccades have a latency of about 180 ms, and the latencies are uncorrelated from trial to ...

journal_title：Biological cybernetics

authors： Shelhamer M

更新日期：2005-07-01 00:00:00

abstract：:In studies of human balance, it is common to fit stimulus-response data by tuning the time-delay and gain parameters of a simple delayed feedback model. Many interpret this fitted model, a simple delayed feedback model, as evidence that predictive processes are not required to explain existing data on standing balance...

journal_title：Biological cybernetics

authors： Gawthrop P,Loram I,Lakie M

更新日期：2009-08-01 00:00:00

abstract：:In motion-processing areas of the visual cortex in cats and monkeys, an anisotropic distribution of direction selectivities displays a preference for movements away from the fovea. This 'centrifugal bias' has been hypothetically linked to the processing of optic flow fields generated during forward locomotion. In this...

journal_title：Biological cybernetics

authors： Lappe M,Rauschecker JP

更新日期：1995-01-01 00:00:00

abstract：:An approach to solving nonlinear control problems is illustrated by means of a layered associative network composed of adaptive elements capable of reinforcement learning. The first layer adaptively develops a representation in terms of which the second layer can solve the problem linearly. The adaptive elements compr...

journal_title：Biological cybernetics

authors： Barto AG,Anderson CW,Sutton RS

更新日期：1982-01-01 00:00:00

abstract：:It is shown that a convolution with certain reasonable receptive field (RF) profiles yields the exact partial derivatives of the retinal illuminance blurred to a specified degree. Arbitrary concatenations of such RF profiles yield again similar ones of higher order and for a greater degree of blurring. By replacing th...

journal_title：Biological cybernetics

authors： Koenderink JJ,van Doorn AJ

更新日期：1987-01-01 00:00:00

abstract：:Explosive movements such as throwing, kicking, and jumping are characterized by high velocity and short movement time. Due to the fact that latencies of neural feedback loops are long in comparison to movement times, correction of deviations cannot be achieved on the basis of neural feedback. In other words, the contr...

journal_title：Biological cybernetics

authors： van Soest AJ,Bobbert MF

更新日期：1993-01-01 00:00:00

abstract：:The generation of informational sequences and their reorganization or reshaping is one of the most intriguing subjects for both neuroscience and the theory of autonomous intelligent systems. In spite of the diversity of sequential activities of sensory, motor, and cognitive neural systems, they have many similarities ...

journal_title：Biological cybernetics

authors： Rabinovich MI,Huerta R,Varona P,Afraimovich VS

更新日期：2006-12-01 00:00:00

abstract：:This paper continues the investigation of a three-loop representation of the segmental muscle stretch reflex system introduced in a preceding communication. Frequency response characteristics were computed for open-loop conditions, control and disturbance signal inputs under a variety of conditions: (i) "in parallel" ...

journal_title：Biological cybernetics

authors： Koehler W,Windhorst U

更新日期：1981-01-01 00:00:00

abstract：:Isolated and cultured neonatal cardiac myocytes contract spontaneously and cyclically, and have the properties of a non-linear oscillator. In this study, we have analyzed the relationship between the fluctuation of contraction rhythm of spontaneously beating cultured cardiac myocytes, and the coupling strength among t...

journal_title：Biological cybernetics

authors： Yamauchi Y,Harada A,Kawahara K

更新日期：2002-02-01 00:00:00

abstract：:Cortical circuits have been proposed to encode information by forming stable spatially structured attractors. Experimentally in the primary somatosensory cortex of the monkey, temporally invariant stimuli lead to spatially structured activity patterns. The purpose of this work is to study a recurrent cortical neural n...

journal_title：Biological cybernetics

authors： Gutkin BS,Smith CE

更新日期：2000-06-01 00:00:00

abstract：:Fast as possible (time optimal) single joint movements throughout the body are characterized by the triphasic (3 pulse) pattern of activation in the agonist and antagonist muscles. Simulation studies using a sixth order, non-linear model were undertaken to determine the relationship between time optimal movement and t...

journal_title：Biological cybernetics

authors： Hannaford B,Stark L

更新日期：1987-01-01 00:00:00

abstract：:The visual system is constantly confronted with the problem of integrating local signals into more global arrangements. This arises from the nature of early cell responses, whether they signal localized measures of luminance, motion, retinal position differences, or discontinuities. Consequently, from sparse, local me...

journal_title：Biological cybernetics

authors： Neumann H,Pessoa L,Hansen T

更新日期：2001-11-01 00:00:00

abstract：:Experimental studies have shown that responses of ventral intraparietal area (VIP) neurons specialize in head movements and the environment near the head. VIP neurons respond to visual, auditory, and tactile stimuli, smooth pursuit eye movements, and passive and active movements of the head. This study demonstrates ma...

journal_title：Biological cybernetics

authors： McCollum G,Klam F,Graf W

更新日期：2012-07-01 00:00:00

abstract：:We consider a general integrate-and-fire (IF) neuron driven by asymmetric dichotomous noise. In contrast to the Gaussian white noise usually used in the so-called diffusion approximation, this noise is colored, i.e., it exhibits temporal correlations. We give an analytical expression for the stationary voltage distrib...

journal_title：Biological cybernetics

authors： Droste F,Lindner B

更新日期：2014-12-01 00:00:00