Right-left discrimination in a biologically oriented model of the cockroach escape system.

abstract：:The local extraction of motion information from brightness patterns by individual movement detectors of the correlation-type is considered in the first part of the paper. A two-dimensional field theory of movement detection is developed by treating the distance between two adjacent photoreceptors as a differential. In...

journal_title：Biological cybernetics

authors： Reichardt WE,Schlögl RW

更新日期：1988-01-01 00:00:00

abstract：:We consider a simple electronic circuit model of a single neuron. The neuron is assumed to be driven by an external signal comprising constant (dc) and random components. In addition, the nonlinearity parameter in the circuit is assumed to fluctuate, thereby giving rise to critical behavior including the onset of hyst...

journal_title：Biological cybernetics

authors： Bulsara AR,Boss RD,Jacobs EW

更新日期：1989-01-01 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：:Nonlinear oscillators are usually utilized by bionic scientists for establishing central pattern generator models for imitating rhythmic motions by bionic scientists. In the natural word, many rhythmic motions possess asymmetric time ratios, which means that the forward and the backward motions of an oscillating proce...

journal_title：Biological cybernetics

authors： Fu Q,Wang DH,Xu L,Yuan G

更新日期：2018-06-01 00:00:00

abstract：:We report on the ability of human observers in judging their direction of translation from sparse, moving random dot patterns for varying extents of 3--D rotation. The observers have to discriminate possible axes of translation with angular separations of 2.5 deg or 5 deg. The field of view is either 20 X 20 deg or 10...

journal_title：Biological cybernetics

authors： Rieger JH,Toet L

更新日期：1985-01-01 00:00:00

abstract：:The operation of a hierarchical competitive network model (VisNet) of invariance learning in the visual system is investigated to determine how this class of architecture can solve problems that require the spatial binding of features. First, we show that VisNet neurons can be trained to provide transform-invariant di...

journal_title：Biological cybernetics

authors： Elliffe MC,Rolls ET,Stringer SM

更新日期：2002-01-01 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

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 describes the aspects involved in modelling a multi-robot system from a human motor control perspective. The human motor control system has a hierarchical and decentralised structure, and building a control system for a multi-robot system that attains human features would require a decomposable model. Decom...

journal_title：Biological cybernetics

authors： Kambhampati C,Rajasekharan S

更新日期：2003-10-01 00:00:00

abstract：:Nicotinic acetylcholine receptors are transmembrane oligomeric proteins that mediate interconversions between open and closed channel states under the control of neurotransmitters. Fast in vitro chemical kinetics and in vivo electrophysiological recordings are consistent with the following multi-step scheme. Upon bind...

journal_title：Biological cybernetics

authors： Edelstein SJ,Schaad O,Henry E,Bertrand D,Changeux JP

更新日期：1996-11-01 00:00:00

abstract：:Insects can remember and return to a place of interest using the surrounding visual cues. In previous experiments, we showed that crickets could home to an invisible cool spot in a hot environment. They did so most effectively with a natural scene surround, though they were also able to home with distinct landmarks or...

journal_title：Biological cybernetics

authors： Mangan M,Webb B

更新日期：2009-10-01 00:00:00

abstract：:Neuromuscular systems are stabilized and controlled by both feedforward and feedback signals. Feedforward pathways driven by central pattern generators (CPGs), in conjunction with preflexive mechanical reaction forces and nonlinear muscle properties, can produce stable stereotypical gaits. Feedback is nonetheless pres...

journal_title：Biological cybernetics

authors： Proctor J,Holmes P

更新日期：2010-06-01 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：:The trace version of classical conditioning is used as a prototypical hippocampal-dependent task to study the recoding sequence prediction theory of hippocampal function. This theory conjectures that the hippocampus is a random recoder of sequences and that, once formed, the neuronal codes are suitable for prediction....

journal_title：Biological cybernetics

authors： Levy WB,Sanyal A,Rodriguez P,Sullivan DW,Wu XB

更新日期：2005-06-01 00:00:00

abstract：:A computational model of a learning system (LS) is described that acquires knowledge and skill necessary for optimal control of a multisegmental limb dynamics (controlled object or CO), starting from "knowing" only the dimensionality of the object's state space. It is based on an optimal control problem setup differen...

journal_title：Biological cybernetics

authors： Shimansky YP,Kang T,He J

更新日期：2004-02-01 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：:In bursting excitable cells such as pancreatic beta-cells and molluscan Aplysia neuron cells, intracellular Ca2+ ion plays a central role in various cellular functions. To understand the role of [Ca2+]i (the intracellular Ca2+ concentration) in electrical bursting, we formulate a mathematical model which contains a fe...

journal_title：Biological cybernetics

authors： Chay TR

更新日期：1990-01-01 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：:Stochastic resonance is demonstrated in a simple energy detector model, as a non-monotonic relationship between signal-to-noise ratio and detection of a sinusoid signal in bandpass-limited Gaussian noise. The behaviour of the model detecting signals of various intensities and signal-to-noise ratios was investigated. S...

journal_title：Biological cybernetics

authors： Tougaard J

更新日期：2000-11-01 00:00:00

abstract：:Synchronization of the oscillatory discharge of cortical neurons could be a part of the mechanism that is involved in cortical information processing. On the assumption that the basic functional unit is the column composed of local excitatory and inhibitory cells and generating oscillatory neural activity, a network m...

journal_title：Biological cybernetics

authors： Fukai T

更新日期：1994-01-01 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：:1. Results from the companion paper were incorporated into a physiologically realistic computer model of the three principal cell types (PD/AB, LP, PY) of the pyloric network in the stomatogastric ganglion. Parameters for the model were mostly calculated (sometimes estimated) from experimental data rather than fitting...

journal_title：Biological cybernetics

authors： Hartline DK

更新日期：1979-08-01 00:00:00

abstract：:Movement of multiple segment limbs requires generation of appropriate joint torques which include terms arising from dynamic interactions among the moving segments as well as from such external forces as gravity. The interaction torques, arising from inertial, centripetal, and Coriolis forces, are not present for sing...

journal_title：Biological cybernetics

authors： Hollerbach MJ,Flash T

更新日期：1982-01-01 00:00:00

abstract：:The human optokinetic response to a horizontally moving stripped pattern surrounding the subject was investigated under quasi-open and closed loop conditions. Open loop conditions were produced by the addition of an external signal from measured slow phase eye velocity to stripe velocity. A comparison of open and clos...

journal_title：Biological cybernetics

authors： Böhmer A,Allum JH

更新日期：1981-01-01 00:00:00

abstract：:Within the field of motor control, there is no consensus on which kinematic and kinetic aspects of movements are planned or controlled. Perturbing goal-directed movements is a frequently used tool to answer this question. To be able to draw conclusions about motor control from kinematic responses to perturbations, a m...

journal_title：Biological cybernetics

authors： Pinter IJ,van Soest AJ,Bobbert MF,Smeets JB

更新日期：2012-10-01 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：:In the current research, the muscle equivalent linear damping coefficient which is introduced as the force-velocity relation in a muscle model and the corresponding time constant are investigated. In order to reach this goal, a 1D skeletal muscle model was used. Two characterizations of this model using a linear force...

journal_title：Biological cybernetics

authors： Ovesy M,Nazari MA,Mahdavian M

更新日期：2016-02-01 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：:A nonstationary signal analysis technique is introduced, which regards an oscillatory physiological signal as a sum of its fragments, presented in the form of a fragmentary decomposition (FD). The virtue of FD is that it is free of the necessity to choose a priori the basis functions intended for signal analysis or sy...

journal_title：Biological cybernetics

authors： Melkonian D,Blumenthal T,Gordon E

更新日期：1999-11-01 00:00:00

abstract：:The lateral-line system is a unique facility of aquatic animals to locate predator, prey, or conspecifics. We present a detailed model of how the clawed frog Xenopus, or fish, can localize submerged moving objects in three dimensions by using their lateral-line system. In so doing we develop two models of a slightly d...

journal_title：Biological cybernetics

authors： Franosch JM,Sichert AB,Suttner MD,van Hemmen JL

更新日期：2005-10-01 00:00:00