Discharge patterns of tonically firing human motoneurones.

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：: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：: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：:Parameters in diffusion neuronal models are divided into two groups; intrinsic and input parameters. Intrinsic parameters are related to the properties of the neuronal membrane and are assumed to be known throughout the paper. Input parameters characterize processes generated outside the neuron and methods for their e...

journal_title：Biological cybernetics

authors： Lansky P,Ditlevsen S

更新日期：2008-11-01 00:00:00

abstract：:In the first part of lifting movements, the trunk movement is surprisingly resistant to perturbations. This study examined which factors contribute to this perturbation resistance of the trunk during lifting. Three possible mechanisms were studied: force-length-velocity characteristics of muscles, the momentum of the ...

journal_title：Biological cybernetics

authors： van der Burg JC,Casius LJ,Kingma I,van Dieën JH,van Soest AJ

更新日期：2005-07-01 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：:This work presents unified analyses of spatial and temporal visual information processing in a feed-forward network of neurons that obey membrane, or shunting equations. The feed-forward shunting network possesses properties that make it well suited for processing of static, spatial information. However, it is shown h...

journal_title：Biological cybernetics

authors： Gaudiano P

更新日期：1992-01-01 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：: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：:The ability to locomote is a defining characteristic of all animals. Yet, all but the most trivial forms of navigation are poorly understood. Here we report and discuss the analytical results of an in-depth study of a simple navigation problem. In principle, there are two strategies for navigating a straight course. O...

journal_title：Biological cybernetics

authors： Cheung A,Zhang S,Stricker C,Srinivasan MV

更新日期：2008-09-01 00:00:00

abstract：:In previous work it has been shown in posture experiments of the human arm that reflexive dynamics were substantial for narrow-band stochastic force disturbances. The estimated reflex gains varied substantially with the frequency content of the disturbances. The present study analyses a simplified linear model of the ...

journal_title：Biological cybernetics

authors： de Vlugt E,van der Helm FC,Schouten AC,Brouwn GG

更新日期：2001-02-01 00:00:00

abstract：:In this paper we perform a bifurcation analysis for a discrete time dynamical system, describing the behavior of a virtual fly, developed by Böddeker and Egelhaaf (2003). Like real blowflies, the virtual counterparts exhibit a dichotomous behavior: they catch small targets but follow big objects at a constant distance...

journal_title：Biological cybernetics

authors： Hüls T

更新日期：2005-09-01 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：:A mathematical model for describing dynamic phenomena in the olfactory bulb is presented. The nature of attractors and the bifurcation sequences in terms of the lateral connection strength in the mitral layer are studied numerically. Chaotic activity has only been found in the case of strong excitatory coupling. Synap...

journal_title：Biological cybernetics

authors： Erdi P,Gröbler T,Barna G,Kaski K

更新日期：1993-01-01 00:00:00

abstract：:Many neurons at the sensory periphery receive periodic input, and their activity exhibits entrainment to this input in the form of a preferred phase for firing. This article describes a modeling study of neurons which skip a random number of cycles of the stimulus between firings over a large range of input intensitie...

journal_title：Biological cybernetics

authors： Longtin A,Bulsara A,Pierson D,Moss F

更新日期：1994-01-01 00:00:00

abstract：:This paper presents a mathematical model for the learning of accurate human arm movements. Its main features are that the movement is the superposition of smooth submovements, the intrinsic deviation of arm movements is considered, visual and kinesthetic feed-back are integrated in the motion control, and the movement...

journal_title：Biological cybernetics

authors： Burdet E,Milner TE

更新日期：1998-04-01 00:00:00

abstract：:ICE stands for internally coupled ears. More than half of the terrestrial vertebrates, such as frogs, lizards, and birds, as well as many insects, are equipped with ICE that utilize an air-filled cavity connecting the two eardrums. Its effect is pronounced and twofold. On the basis of a solid experimental and mathemat...

journal_title：Biological cybernetics

authors： van Hemmen JL,Christensen-Dalsgaard J,Carr CE,Narins PM

更新日期：2016-10-01 00:00:00

abstract：:The superior colliculus (SC) integrates relevant sensory information (visual, auditory, somatosensory) from several cortical and subcortical structures, to program orientation responses to external events. However, this capacity is not present at birth, and it is acquired only through interactions with cross-modal eve...

journal_title：Biological cybernetics

authors： Cuppini C,Magosso E,Rowland B,Stein B,Ursino M

更新日期：2012-12-01 00:00:00

abstract：:The problem of estimating an unknown transient signal, given an ensemble of waveforms, in which this signal appears as a nonrandom component in the presence of additive noise is considered. This problem is solved by generalizing the method of "a posteriori 'Wiener' filtering". In the new method, the ensemble average i...

journal_title：Biological cybernetics

authors： de Weerd JP,Kap JI

更新日期：1981-01-01 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：:This article describes current views on motor and sensory control of extraocular muscles (EOMs) based on anatomical data. The special morphology of EOMs, including their motor innervation, is described in comparison to classical skeletal limb and trunk muscles. The presence of proprioceptive organs is reviewed with em...

journal_title：Biological cybernetics

authors： Lienbacher K,Horn AK

更新日期：2012-12-01 00:00:00

abstract：:According to modern views of the cerebellum in motor control, each cerebellar functional unit, or microzone, learns how to execute predictive and coordinative control, based on long-term depression of the granule cell-Purkinje cell synapses. In the present paper, in light of recent experimental and theoretical studies...

journal_title：Biological cybernetics

authors： Schweighofer N

更新日期：1998-08-01 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：:The proposal that rod outer segment length is optimal with respect to photon absorption and noise control is extended and tested in a number of species. We find good agreement with our optimality criterion in duplex retinae where rods act as detectors of one or a few photons, but not in all rod retinae nor in those wh...

journal_title：Biological cybernetics

authors： Leibovic KN,Moreno-Diaz R Jr

更新日期：1992-01-01 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：:The present paper considers the relation between the shape of a triangle and probability of its recognition. An effect of triangle size on perception of its shape is examined in the first experiment. In the second the loci of eye fixations during triangle recognition task are recorded and analysed. A simulation model ...

journal_title：Biological cybernetics

authors： Pizlo Z

更新日期：1988-01-01 00:00:00

abstract：:Neuronal output properties for input stimuli that evoke a deterministic response can be efficiently described by the interspike-interval function (Awiszus 1988a). It is shown in this paper that there are stimuli for which both the Hodgkin-Huxley (HH-) model of an action potential encoding membrane (Hodgkin and Huxley ...

journal_title：Biological cybernetics

authors： Awiszus F

更新日期：1989-01-01 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：: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：:The application of an electronic real time emulator for biology-inspired pulse processing neural networks (BPN) to recognition and temporal tracking of discrete impulse patterns via delay adaptation is demonstrated. The electronic emulation includes biologically plausible features, such as asynchronous impulses, membr...

journal_title：Biological cybernetics

authors： Napp-Zinn H,Jansen M,Eckmiller R

更新日期：1996-05-01 00:00:00