Quantitation of a mass action of dopaminergic neurones regulating temporal damping of linear electrocortical waves.

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：:With regular trains of stimuli at a high frequency, the contribution of each stimulus to the force generated over time declines from the second to about the tenth stimulus, but then begins to increase again. This late increase is referred to as tetanic potentiation in analogy with the post-tetanic potentiation of the ...

journal_title：Biological cybernetics

authors： Parmiggiani F,Stein RB,Rolf R

更新日期：1982-01-01 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：:Identification and analysis of directed influences in multivariate systems is an important problem in many scientific areas. Recent studies in neuroscience have provided measures to determine the network structure of the process and to quantify the total effect in terms of energy transfer. These measures are based on ...

journal_title：Biological cybernetics

authors： Gigi S,Tangirala AK

更新日期：2010-08-01 00:00:00

abstract：:An approach to solving nonlinear control problems is illustrated by means of a layered associative network composed of adaptive elements capable of reinforcement learning. The first layer adaptively develops a representation in terms of which the second layer can solve the problem linearly. The adaptive elements compr...

journal_title：Biological cybernetics

authors： Barto AG,Anderson CW,Sutton RS

更新日期：1982-01-01 00:00:00

abstract：:Sixty subjects were tested to assign orientation to ten dot patterns differing in their overall form and the number of dots in the pattern. The patterns were presented in four different positions in the visual field and their orientation was estimated in two ways. It was demonstrated that the assignment of orientation...

journal_title：Biological cybernetics

authors： Yakimoff N

更新日期：1981-01-01 00:00:00

abstract：:A central pattern generator (CPG) is built to control a mechanical device (plant) inspired by the pyloric chamber of the lobster. Conductance-based models are used to construct the neurons of the CPG. The plant has an associated function that measures the amount of food flowing through it per unit of time. We search f...

journal_title：Biological cybernetics

authors： Huerta R,Sánchez-Montañés MA,Corbacho F,Sigüenza JA

更新日期：2000-01-01 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：:A randomization method is developed for the calculation of covariation between multiple variables that are linked nonlinearly to a dependent variable. Covariation is a phenomenon often invoked in the study of movement coordination to capture the fact that in coordinated movement the outcome shows greater than expected...

journal_title：Biological cybernetics

authors： Müller H,Sternad D

更新日期：2003-07-01 00:00:00

abstract：:The amount of power in different frequency bands of the electroencephalogram (EEG) carries information about the behavioral state of a subject. Hence, neurologists treating epileptic patients monitor the temporal evolution of the different bands. We propose a covariance-based method to detect and characterize epilepti...

journal_title：Biological cybernetics

authors： Maidana Capitán M,Cámpora N,Sigvard CS,Kochen S,Samengo I

更新日期：2020-10-01 00:00:00

abstract：:Understanding closed loop behavioral systems is a non-trivial problem, especially when they change during learning. Descriptions of closed loop systems in terms of information theory date back to the 1950s, however, there have been only a few attempts which take into account learning, mostly measuring information of i...

journal_title：Biological cybernetics

authors： Kulvicius T,Kolodziejski C,Tamosiunaite M,Porr B,Wörgötter F

更新日期：2010-10-01 00:00:00

abstract：:Based on the kinematics of goal-directed aiming movements in a reciprocal Fitts' task, a minimal limit cycle model is proposed that is capable of producing the behavior observed at levels of task difficulty ranging from 3 to 7. From graphical and statistical analyses of the phase planes, Hooke's planes and velocity pr...

journal_title：Biological cybernetics

authors： Mottet D,Bootsma RJ

更新日期：1999-04-01 00:00:00

abstract：:In this article, we present a neurologically motivated computational architecture for visual information processing. The computational architecture's focus lies in multiple strategies: hierarchical processing, parallel and concurrent processing, and modularity. The architecture is modular and expandable in both hardwa...

journal_title：Biological cybernetics

authors： Holzbach A,Cheng G

更新日期：2014-06-01 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：:Single-unit recordings suggest that the midbrain superior colliculus (SC) acts as an optimal controller for saccadic gaze shifts. The SC is proposed to be the site within the visuomotor system where the nonlinear spatial-to-temporal transformation is carried out: the population encodes the intended saccade vector by i...

journal_title：Biological cybernetics

authors： Kasap B,van Opstal AJ

更新日期：2017-08-01 00:00:00

abstract：:The present report presents an attempt to define the physiological parameter used to describe "voice tremor" in psychological stress evaluating machines, and to find its sources. This parameter was found to be a low frequency (5-20 Hz) random process which frequency modulates the vocal cord waveform and (independently...

journal_title：Biological cybernetics

authors： Inbar GF,Eden G

更新日期：1983-01-01 00:00:00

abstract：:A new association scheme which can still recall appropriate data when some key elements are missing (blank) is presented. The traditional associative memory models are designed to deal with complete (memorized) keys, but in the real world, key elements are often missing due to error, equipment failure, observation dif...

journal_title：Biological cybernetics

authors： Murakami K,Aibara T

更新日期：1982-01-01 00:00:00

abstract：:Small inhibitory neuronal circuits have long been identified as key neuronal motifs to generate and modulate the coexisting rhythms of various motor functions. Our paper highlights the role of a cellular switching mechanism to orchestrate such circuits. The cellular switch makes the circuits reconfigurable, robust, ad...

journal_title：Biological cybernetics

authors： Drion G,Franci A,Sepulchre R

更新日期：2019-04-01 00:00:00

abstract：:The response of a population of neurons to time-varying synaptic inputs can show a rich phenomenology, hardly predictable from the dynamical properties of the membrane's inherent time constants. For example, a network of neurons in a state of spontaneous activity can respond significantly more rapidly than each single...

journal_title：Biological cybernetics

authors： Giugliano M,La Camera G,Fusi S,Senn W

更新日期：2008-11-01 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：:The size of a pair of cortical ocular dominance columns determines a basic anatomical module of V-1 which Hubel and Wiesel have termed the hypercolumn. Does this correspond to a basic functional, or psychophysically measurable, module as well? This is the basic question addressed in the present paper. Since the ocular...

journal_title：Biological cybernetics

authors： Yeshurun Y,Schwartz EL

更新日期：1999-02-01 00:00:00

abstract：:A fundamental problem in neuroscience, to which Prof. Segundo has made seminal contributions, is to understand how action potentials represent events in the external world. The aim of this paper is to review the issue of neural coding in the context of the rodent whiskers, an increasingly popular model system. Key iss...

journal_title：Biological cybernetics

authors： Petersen RS,Panzeri S,Maravall M

更新日期：2009-06-01 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：:One possible strategy for the solution of the correspondence problem of stereo matching is the coarse-to-fine mechanism: The matching process starts with a lowpass-filtered version of the stereogram where only a few, high-contrast image features can be extracted and the probability of false matches is therefore low. I...

journal_title：Biological cybernetics

authors： Mallot HA,Gillner S,Arndt PA

更新日期：1996-02-01 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：: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：:Texture gradients are systematic variations in projected surface texture. It is expected that image variables such as texture density or size carry information about the surface orientation and distance. This article reexamines the information content of texture gradients and reviews the relevant psychophysics. Slant ...

journal_title：Biological cybernetics

authors： Stevens KA

更新日期：1981-01-01 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：:This article compiles an expose of Valentino Braitenberg's singular view on neuroanatomy and neuroscience. The review emphasizes his topologically informed work on neuroanatomy and his dialectics of brain-based explanations of motor behavior. Some of his early ideas on topologically informed neuroanatomy are presented...

journal_title：Biological cybernetics

authors： Negrello M

更新日期：2014-10-01 00:00:00

abstract：:Isolated and cultured neonatal cardiac myocytes contract spontaneously and cyclically, and have the properties of a non-linear oscillator. In this study, we have analyzed the relationship between the fluctuation of contraction rhythm of spontaneously beating cultured cardiac myocytes, and the coupling strength among t...

journal_title：Biological cybernetics

authors： Yamauchi Y,Harada A,Kawahara K

更新日期：2002-02-01 00:00:00