Human hand impedance characteristics during maintained posture.

abstract：:Between the extreme views concerning ontogenesis (genetic vs. environmental determination), we use a moderate approach: a somehow pre-established neuronal model network reacts to activity deviations (reflecting input to be compensated), and stabilizes itself during a complex feed-back process. Morphogenesis is based o...

journal_title：Biological cybernetics

authors： Dammasch IE,Wagner GP,Wolff JR

更新日期：1986-01-01 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：: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：: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：: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：:With relative phase as a collective variable or order parameter, phase attractive dynamics can capture the temporally coherent behavior of a large number of different experimental systems. We present results from multifrequency coordination experiments in humans showing: a) that phase attraction persists especially fo...

journal_title：Biological cybernetics

authors： deGuzman GC,Kelso JA

更新日期：1991-01-01 00:00:00

abstract：:Spike-timing-dependent plasticity (STDP) determines the evolution of the synaptic weights according to their pre- and post-synaptic activity, which in turn changes the neuronal activity. In this paper, we extend previous studies of input selectivity induced by (STDP) for single neurons to the biologically interesting ...

journal_title：Biological cybernetics

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

更新日期：2009-08-01 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：:Involuntary eye movements were recorded during threshold detection tasks under various experimental conditions. The data were analyzed for interdependencies between stimulus parameters, detection performance, and oculomotor behaviour. The data demonstrate that under certain conditions, saccadic parameters are adaptive...

journal_title：Biological cybernetics

authors： Deubel H,Elsner T

更新日期：1986-01-01 00:00:00

abstract：:Most robot navigation systems perform place recognition using a single-sensor modality and one, or at most two heterogeneous map scales. In contrast, mammals perform navigation by combining sensing from a wide variety of modalities including vision, auditory, olfactory and tactile senses with a multi-scale, homogeneou...

journal_title：Biological cybernetics

authors： Jacobson A,Chen Z,Milford M

更新日期：2018-06-01 00:00:00

abstract：:Synchronization properties of locally coupled neural oscillators were investigated analytically and by computer simulation. When coupled in a manner that mimics excitatory chemical synapses, oscillators having more than one time scale (relaxation oscillators) are shown to approach synchrony using mechanisms very diffe...

journal_title：Biological cybernetics

authors： Somers D,Kopell N

更新日期：1993-01-01 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：:Synaptic plasticity is considered to be the biological substrate of learning and memory. In this document we review phenomenological models of short-term and long-term synaptic plasticity, in particular spike-timing dependent plasticity (STDP). The aim of the document is to provide a framework for classifying and eval...

journal_title：Biological cybernetics

authors： Morrison A,Diesmann M,Gerstner W

更新日期：2008-06-01 00:00:00

abstract：:We offer a hypothesis on the organization of multi-effector motor synergies and illustrate it with the task of force production with a set of fingers. A physical metaphor, a leaking bucket, is analyzed to demonstrate that an inanimate structure can show apparent error compensation among its elements. A neural model is...

journal_title：Biological cybernetics

authors： Latash ML,Shim JK,Smilga AV,Zatsiorsky VM

更新日期：2005-03-01 00:00:00

abstract：:The short-term (i.e., days) and long-term (i.e., months) effects of adaptation to posturography examinations were investigated in 12 normal subjects who were repeatedly examined for five consecutive days and again after 90 days. The examinations were conducted both with eyes open and closed, and the perturbations were...

journal_title：Biological cybernetics

authors： Fransson PA,Tjernström F,Hafström A,Magnusson M,Johansson R

更新日期：2002-05-01 00:00:00

abstract：:Goal directed movements, executed by means of a manipulator with various dynamics, were investigated in order to establish to what extent the loading affects the executed movement. The desired movement concept, together with a describing function model for goal directed movements, was applied to parameterize the movem...

journal_title：Biological cybernetics

authors： Ruitenbeek JC

更新日期：1984-01-01 00:00:00

abstract：:Information about time-dependent sensory stimuli is encoded in the activity of neural populations; distinct aspects of the stimulus are read out by different types of neurons: while overall information is perceived by integrator cells, so-called coincidence detector cells are driven mainly by the synchronous activity ...

journal_title：Biological cybernetics

authors： Bostner Ž,Knoll G,Lindner B

更新日期：2020-06-01 00:00:00

abstract：:In internally coupled ears (ICE), the displacement of one eardrum creates pressure waves that propagate through air-filled passages in the skull, causing a displacement of the opposing eardrum and vice versa. In this review, a thorough mathematical analysis of the membranes, passages, and propagating pressure waves re...

journal_title：Biological cybernetics

authors： Vedurmudi AP,Young BA,van Hemmen JL

更新日期：2016-10-01 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：: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：: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：: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：: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：: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 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：:After a brief description of the main anatomical structures subserving the oculomotor responses during combined vestibular and optokinetic stimulations, a mathematical model is presented. With respect to a previous model by Schmid et al. (1980), a more accurate definition of the roles of the neural mechanisms involved...

journal_title：Biological cybernetics

authors： Buizza A,Schmid R

更新日期：1982-01-01 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：:The concepts of pattern dynamics and their adaptation through behavioral information, developed in the context of rhythmic movement coordination, are generalized to describe discrete movements of single components and the coordination of multiple components in discrete movement. In a first step we consider only one sp...

journal_title：Biological cybernetics

authors： Schöner G

更新日期：1990-01-01 00:00:00

abstract：:This article analyzes the question of whether neuroscience allows for mathematical descriptions and whether an interaction between experimental and theoretical neuroscience can be expected to benefit both of them. It is argued that a mathematization of natural phenomena never happens by itself. First, appropriate key ...

journal_title：Biological cybernetics

authors： van Hemmen JL

更新日期：2014-10-01 00:00:00

abstract：:A new method is presented for quantitative evaluation of single-sweep phase and amplitude electro-encephalogram (EEG) characteristics that is a more informative approach in comparison with conventional signal averaging. In the averaged potential, phase-locking and amplitude effects of the EEG response cannot be separa...

journal_title：Biological cybernetics

authors： Kolev V,Yordanova J

更新日期：1997-03-01 00:00:00