Dynamic interactions between limb segments during planar arm movement.

abstract：:It has been proved that a detection process may be accounted for by a simple two-state model consisting of a collection of linear analysers followed by a maximum-output decision rule provided that a set of all threshold stimuli is convex. A non-parametrical method to identify the analysers constituting such a model is...

journal_title：Biological cybernetics

authors： Logvinenko AD

更新日期：1995-11-01 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：:Neuronal excitability under stimuli with a complex time course is investigated on the basis of the numerical solution of the Hodgkin-Huxley equations. Each stimulus is composed of 100-1000 unitary excitatory postsynaptic potentials (uEPSP) that start randomly within a definite time window. Probability of initiating a ...

journal_title：Biological cybernetics

authors： Vidybida AK

更新日期：1996-06-01 00:00:00

abstract：:In the present work a linear model for a pair of antagonistic muscles is analysed. Each constituent muscle in this model is identical to ones considered previously (Stein and Oğuztöreli, 1976). Analytical properties of the antagonistic muscles and dynamics of the system are described and some numerical results are dis...

journal_title：Biological cybernetics

authors： Oğuztöreli MN,Stein RB

更新日期：1982-01-01 00:00:00

abstract：:Highly-interconnected networks of nonlinear analog neurons are shown to be extremely effective in computing. The networks can rapidly provide a collectively-computed solution (a digital output) to a problem on the basis of analog input information. The problems to be solved must be formulated in terms of desired optim...

journal_title：Biological cybernetics

authors： Hopfield JJ,Tank DW

更新日期：1985-01-01 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：:Leg movements of stick insects (Carausius morosus) making turns towards visual targets are examined in detail, and a dynamic model of this behaviour is proposed. Initial results suggest that front legs shape most of the body trajectory, while the middle and hind legs just follow external forces (Rosano H, Webb B, in T...

journal_title：Biological cybernetics

authors： Rosano H,Webb B

更新日期：2007-09-01 00:00:00

abstract：:The contrast threshold elevation effect has been measured for one dimensional (grating) and for two dimensional (spot) stimulus patterns. It has been shown previously (Burton and Ruddock, 1978) that such stimuli elicit, respectively, non-length-selective and length-selective adaptation effects. It is established that,...

journal_title：Biological cybernetics

authors： Naghshineh S,Ruddock KH

更新日期：1978-11-10 00:00:00

abstract：:The detection of small radially symmetric targets was studied using a subthreshold summation paradigm. Small disc and disc-like patterns with diameters up to 0.60 were used for superposition on Bessel functions of zero order, subthreshold contrast and various spatial frequencies. Contrast interrelation functions prove...

journal_title：Biological cybernetics

authors： Mortensen U,Meinhardt G

更新日期：2001-01-01 00:00:00

abstract：:A functional model of target selection in the saccadic system is presented, incorporating elements of visual processing, motor planning, and motor control. We address the integration of visual information with pre-information, which is provided by manipulating the probability that a target appears at a certain locatio...

journal_title：Biological cybernetics

authors： Kopecz K,Schöner G

更新日期：1995-06-01 00:00:00

abstract：:A theoretical and experimental study on the detection of a square wave pattern of random dots is presented. Our theory applies to two-alternative forced choice experiments as well as to "seen"-"not seen" discrimination experiments. In our experiments we used the forced choice method. The theory provides a good descrip...

journal_title：Biological cybernetics

authors： Lelkens AM,Oppeneer PM

更新日期：1983-01-01 00:00:00

abstract：:Cognitive theory has decomposed human mental abilities into cognitive (sub) systems, and cognitive neuroscience succeeded in disclosing a host of relationships between cognitive systems and specific structures of the human brain. However, an explanation of why specific functions are located in specific brain loci had ...

journal_title：Biological cybernetics

authors： Pulvermüller F,Garagnani M,Wennekers T

更新日期：2014-10-01 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：:A neural model is proposed for the spatiotemporal properties of simple cells in the visual cortex. In the model, several cortical cells are arranged on a ring, with mutual excitatory or inhibitory connections. The cells also receive excitatory inputs either from lagged and nonlagged cells of the lateral geniculate nuc...

journal_title：Biological cybernetics

authors： Hamada T,Yamashima M,Kato K

更新日期：1997-10-01 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：: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：: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：:In neuronal networks, the changes of synaptic strength (or weight) performed by spike-timing-dependent plasticity (STDP) are hypothesized to give rise to functional network structure. This article investigates how this phenomenon occurs for the excitatory recurrent connections of a network with fixed input weights tha...

journal_title：Biological cybernetics

authors： Gilson M,Burkitt AN,Grayden DB,Thomas DA,van Hemmen JL

更新日期：2009-12-01 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：:We study the dynamics of a system of coupled nonlinear oscillators that has been used to model coordinated human movement behavior. In contrast to earlier work we examine the case where the two component oscillators have different eigenfrequencies. Problems related to the decomposition of a time series (from an experi...

journal_title：Biological cybernetics

authors： Fuchs A,Jirsa VK,Haken H,Kelso JA

更新日期：1996-01-01 00:00:00

abstract：:It is well known that the human postural control system responds to motion of the visual scene, but the implicit assumptions it makes about the visual environment and what quantities, if any, it estimates about the visual environment are unknown. This study compares the behavior of four models of the human postural co...

journal_title：Biological cybernetics

authors： Carver S,Kiemel T,van der Kooij H,Jeka JJ

更新日期：2005-03-01 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 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

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：:Among the various possible criteria guiding eye movement selection, we investigate the role of position uncertainty in the peripheral visual field. In particular, we suggest that, in everyday life situations of object tracking, eye movement selection probably includes a principle of reduction of uncertainty. To evalua...

journal_title：Biological cybernetics

authors： Colas F,Flacher F,Tanner T,Bessière P,Girard B

更新日期：2009-03-01 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 dynamic response of the human ankle joint to a bandlimited random torque perturbation superimposed on a constant bias torque is observed in normal human subjects. The applied torque input, the joint angular rotation output, and the electromyographic activity using surface electrodes from the extensor and the flexo...

journal_title：Biological cybernetics

authors： Agarwal GC,Goodarzi SM,O'Neill WD,Gottlieb GL

更新日期：1984-01-01 00:00:00

abstract：:A signal-tuned approach has been recently introduced for modeling stimulus-dependent cortical receptive fields. The approach is based on signal-tuned Gabor functions, which are Gaussian-modulated sinusoids whose parameters are obtained from a "tuning" signal. Given a stimulus to a cell, it is taken as the tuning signa...

journal_title：Biological cybernetics

authors： Torreão JR

更新日期：2015-10-01 00:00:00

abstract：:We consider the description of a nonlinear stochastic transduction in terms of its input/output distribution. We construct a sequence of approximating maximum-entropy estimates from a finite set of input/output observations. This procedure extends the Wiener theory to the analysis of nonlinear stochastic transducers a...

journal_title：Biological cybernetics

authors： Victor JD,Johannesma P

更新日期：1986-01-01 00:00:00

abstract：:Estimating the behavior of a network of neurons requires accurate models of the individual neurons along with accurate characterizations of the connections among them. Whereas for a single cell, measurements of the intracellular voltage are technically feasible and sufficient to characterize a useful model of its beha...

journal_title：Biological cybernetics

authors： Knowlton C,Meliza CD,Margoliash D,Abarbanel HD

更新日期：2014-06-01 00:00:00