Evidence for different nonlinear summation schemes for lines and gratings at threshold.

abstract：:The correspondence between afferent discharges and sinusoidal length modulations (0.2--10 cps, under 10% of the natural length variations) was studied in isolated fast-adapting stretch receptor organs (FAO) of crayfish, largely using average displays of rate vs. length (or derivatives) along the cycle. Rate modulation...

journal_title：Biological cybernetics

authors： Martínez OD,Kohn AF,Segundo JP

更新日期：1983-01-01 00:00:00

abstract：:Panoramic image differences can be used for view-based homing under natural outdoor conditions, because they increase smoothly with distance from a reference location (Zeil et al., J Opt Soc Am A 20(3):450-469, 2003). The particular shape, slope and depth of such image difference functions (IDFs) recorded at any one p...

journal_title：Biological cybernetics

authors： Stürzl W,Zeil J

更新日期：2007-05-01 00:00:00

abstract：:This article presents the use of continuous dynamic models in the form of differential equations to describe and predict temporal changes in biological processes and discusses several of its important advantages over discontinuous bistable ones, exemplified on the stick insect walking system. In this system, coordinat...

journal_title：Biological cybernetics

authors： Daun-Gruhn S,Büschges A

更新日期：2011-07-01 00:00:00

abstract：:Under a 90 degrees rotation of motor space relative to visual space, human two-dimensional aiming movements frequently take the form of smooth arcs such as spirals and semi-circles. A time-independent differential equation explains this tendency in terms of a rotation-induced vector field made up, at each point in the...

journal_title：Biological cybernetics

authors： Cunningham HA,Vardi I

更新日期：1990-01-01 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：:We have previously tried to explain perceptual inference and learning under a free-energy principle that pursues Helmholtz's agenda to understand the brain in terms of energy minimization. It is fairly easy to show that making inferences about the causes of sensory data can be cast as the minimization of a free-energy...

journal_title：Biological cybernetics

authors： Friston KJ,Daunizeau J,Kilner J,Kiebel SJ

更新日期：2010-03-01 00:00:00

abstract：:The multi-channel system of the segmental muscle stretch reflex arc is modelled as an arrangement of two or three parallel "component" loops coupled to each other at spinal and at muscle level. Such a model is thought to be more realistic than the usually adopted representation of the stretch reflex as a single negati...

journal_title：Biological cybernetics

authors： Koehler W,Windhorst U

更新日期：1980-01-01 00:00:00

abstract：:A mathematical muscle model is presented that relates neural control signals linearly to muscle force without violating important known physiological constraints, such as the size-principle (Henneman and Mendell 1981) and non-linear twitch summation (Burke et al. 1976). This linearity implies that the neural control s...

journal_title：Biological cybernetics

authors： Tax AA,Denier van der Gon JJ

更新日期：1991-01-01 00:00:00

abstract：:A method that enables measurement of the degree of coupling between two signals is presented. The method is based on the definition of an uncoupling function calculating, by means of entropy rates, the minimum amount of independent information (i.e. the information carried by one signal which cannot be derived from th...

journal_title：Biological cybernetics

authors： Porta A,Baselli G,Lombardi F,Montano N,Malliani A,Cerutti S

更新日期：1999-08-01 00:00:00

abstract：:One of the major goals in cellular neurobiology is the meaningful cell classification. However, in cell classification there are many unresolved issues that need to be addressed. Neuronal classification usually starts with grouping cells into classes according to their main morphological features. If one tries to test...

journal_title：Biological cybernetics

authors： Ristanović D,Milošević NT,Marić DL

更新日期：2011-03-01 00:00:00

abstract：:Compared to all other hearing animals, insects are the smallest ones, both in absolute terms and in relation to the wavelength of most biologically relevant sounds. The ears of insects can be located at almost any possible body part, such as wings, legs, mouthparts, thorax or abdomen. The interaural distances are gene...

journal_title：Biological cybernetics

authors： Römer H,Schmidt AK

更新日期：2016-10-01 00:00:00

abstract：:Recent results demonstrate techniques for fully quantitative, statistical inference of the dynamics of individual neurons under the Hodgkin-Huxley framework of voltage-gated conductances. Using a variational approximation, this approach has been successfully applied to simulated data from model neurons. Here, we use t...

journal_title：Biological cybernetics

authors： Meliza CD,Kostuk M,Huang H,Nogaret A,Margoliash D,Abarbanel HD

更新日期：2014-08-01 00:00:00

abstract：:A model calculation is presented simulating the coordinated interaction between the walking legs of a multi-legged animal. The neural network consists of separate modules with oscillatory capabilities. It has the ability to adjust the necessary parameters for producing a coordinated interaction between the modules in ...

journal_title：Biological cybernetics

authors： Müller-Wilm U

更新日期：1993-01-01 00:00:00

abstract：:In many applications of signal processing, especially in communications and biomedicine, preprocessing is necessary to remove noise from data recorded by multiple sensors. Typically, each sensor or electrode measures the noisy mixture of original source signals. In this paper a noise reduction technique using independ...

journal_title：Biological cybernetics

authors： Vorobyov S,Cichocki A

更新日期：2002-04-01 00:00:00

abstract：:Response patterns recorded with 30 microelectrodes from area 17 of anaesthetized monkeys are analysed. A proportion of the patterns are used to define prototype response patterns. These in turn are used to recognize the stimulus from further non-averaged response patterns. In comparison, recognition by a feedforward '...

journal_title：Biological cybernetics

authors： Becker JD,Krüger J

更新日期：1996-04-01 00:00:00

abstract：:A mathematical model of the central neural mechanisms of respiratory rhythm generation is developed. This model assumes that the respiratory cycle consists of three phases: inspiration, post-inspiration, and expiration. Five respiratory neuronal groups are included: inspiratory, late-inspiratory, post-inspiratory, exp...

journal_title：Biological cybernetics

authors： Botros SM,Bruce EN

更新日期：1990-01-01 00:00:00

abstract：:We discuss a biophysical model of synaptic plasticity that provides a unified view of the outcomes of synaptic modification protocols, including: (1) prescribed time courses of postsynaptic intracellular Ca(2+) release, (2) postsynaptic voltage clamping with presentation of presynaptic spike trains at various frequenc...

journal_title：Biological cybernetics

authors： Abarbanel HD,Gibb L,Huerta R,Rabinovich MI

更新日期：2003-09-01 00:00:00

abstract：:This paper presents a model for the circadian temporization system of mammals which associates the synchronization dynamics of coupling oscillators to a set of equations able to reproduce the synaptic characteristics of somatodendritic membrane of neurons. The circadian timing system is organized in a way to receive i...

journal_title：Biological cybernetics

authors： Cardoso FR,de Oliveira Cruz FA,Silva D,Cortez CM

更新日期：2009-05-01 00:00:00

abstract：:We present a procedure that optimally adjusts specified parameters of a mathematical model to describe a set of measured data. The technique integrates a dynamic systems-simulation language with a robust algorithm for nonlinear parameter estimation, and it can be implemented on a microcomputer. Sensitivity functions a...

journal_title：Biological cybernetics

authors： Huebner WP,Saidel GM,Leigh RJ

更新日期：1990-01-01 00:00:00

abstract：:The method of non-linear forecasting of time series was applied to different simulated signals and EEG in order to check its ability of distinguishing chaotic from noisy time series. The goodness of prediction was estimated, in terms of the correlation coefficient between forecasted and real time series, for non-linea...

journal_title：Biological cybernetics

authors： Blinowska KJ,Malinowski M

更新日期：1991-01-01 00:00:00

abstract：:This paper deals with the problem of separating the spectra of signal and noise in ensembles where the signal can be considered as an invariant component and the noise as a stationary additive background. Several methods are discussed and compared on the basis of a statistical analysis of the first two moments of the ...

journal_title：Biological cybernetics

authors： de Weerd JP,Uyen GJ,Johannesma PI,Martens WL

更新日期：1979-03-19 00:00:00

abstract：:Connections among ventrolateral medullary respiratory neurons inferred from spike train analysis were incorporated into a model and simulated with the program SYSTM11 (MacGregor 1987). Inspiratory (I) and expiratory (E) neurons with augmenting (AUG) and decrementing (DEC) discharge patterns and rostral I-E/I neurons e...

journal_title：Biological cybernetics

authors： Balis UJ,Morris KF,Koleski J,Lindsey BG

更新日期：1994-01-01 00:00:00

abstract：:We employ an optimal solution to both the "shape from motion problem" and the related problem of the estimation of self-movement on a purely optical basis to deduce practical rules of thumb for the limits of the optic flow information content in the presence of perturbation of the motion parallax field. The results ar...

journal_title：Biological cybernetics

authors： Koenderink JJ,van Doorn AJ

更新日期：1987-01-01 00:00:00

abstract：:Saccadic averaging is the phenomenon that two simultaneously presented retinal inputs result in a saccade with an endpoint located on an intermediate position between the two stimuli. Recordings from neurons in the deeper layers of the superior colliculus have revealed neural correlates of saccade averaging, indicatin...

journal_title：Biological cybernetics

authors： Krommenhoek KP,Wiegerinck WA

更新日期：1998-06-01 00:00:00

abstract：:This paper introduces a theoretical frame-work for characterizing and classifying simple parallel algorithms and systems with many inputs, for example an array of photoreceptors. The polynomial representation (Taylor series development) of a large class of operators is introduced and its range of validity discussed. T...

journal_title：Biological cybernetics

authors： Poggio T,Reichardt W

更新日期：1980-01-01 00:00:00

abstract：:The assessment of the variability of neuronal spike timing is fundamental to gain understanding of latency coding. Based on recent mathematical results, we investigate theoretically the impact of channel noise on latency variability. For large numbers of ion channels, we derive the asymptotic distribution of latency, ...

journal_title：Biological cybernetics

authors： Wainrib G,Thieullen M,Pakdaman K

更新日期：2010-07-01 00:00:00

abstract：:Brain resonance phenomena and induced rhythms in the brain recently gained importance in electroencephalographic, magnetoencephalographic and cellular studies (Başar and Bullock 1992). It was hypothesized that evoked potentials are superpositions of induced rhythms caused by resonance phenomena in neural populations (...

journal_title：Biological cybernetics

authors： Schürmann M,Başar E

更新日期：1994-01-01 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：:The experimental identification of a non-linear biologic transducer is often approached via consideration of its response to a stochastic test ensemble, such as Gaussian white noise (Marmarelis and Marmarelis 1978). In this approach, the input-output relationship a deterministic transducer is described by an orthogona...

journal_title：Biological cybernetics

authors： Victor JD

更新日期：1987-01-01 00:00:00

abstract：:This study proposes an adaptive control architecture based on an accurate regression method called Locally Weighted Projection Regression (LWPR) and on a bio-inspired module, such as a cerebellar-like engine. This hybrid architecture takes full advantage of the machine learning module (LWPR kernel) to abstract an opti...

journal_title：Biological cybernetics

authors： Tolu S,Vanegas M,Luque NR,Garrido JA,Ros E

更新日期：2012-10-01 00:00:00