Visual localization of briefly presented peripheral targets.

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：:It is shown that the models for the transduction process in photoreceptors which treat latency and amplification as integrated phenomena ("integrated models") yield time scales for single photon signals ("quantum bumps") which distinctly conflict with the experimentally observed ones for the ventral nerve photorecepto...

journal_title：Biological cybernetics

authors： Schnakenberg J

更新日期：1989-01-01 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：: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：:Models built using mean data can represent only a very small percentage, or none, of the population being modeled, and produce different activity than any member of it. Overcoming this "averaging" pitfall requires measuring, in single individuals in single experiments, all of the system's defining characteristics. We ...

journal_title：Biological cybernetics

authors： Blümel M,Guschlbauer C,Daun-Gruhn S,Hooper SL,Büschges A

更新日期：2012-11-01 00:00:00

abstract：:David Marr and others have hypothesized that the visual system processes complex scene information in stages, the first of which involves the detection of light intensity edges or "zero-crossings" (Marr, 1982). Ideal zero-crossing detector mechanisms have been described and modeled in terms of their possible physiolog...

journal_title：Biological cybernetics

authors： Hochstein S,Spitzer H

更新日期：1984-01-01 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：: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：: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：:In the neural superposition eye of a dipteran fly every ommatidium has eight photoreceptors, each associated with a rhabdomere, two central and six peripheral, which altogether result in seven functional light guides. Groups of eight rhabdomeres in neighboring ommatidia have largely overlapping fields of view. Based o...

journal_title：Biological cybernetics

authors： Bitsakos K,Fermüller C

更新日期：2006-11-01 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：:The spinal neural networks of larval zebrafish (Danio rerio) generate a variety of movements such as escape, struggling, and swimming. Various mechanisms at the neural and network levels have been proposed to account for switches between these behaviors. However, there are currently no detailed demonstrations of such ...

journal_title：Biological cybernetics

authors： Kuo PD,Eliasmith C

更新日期：2005-09-01 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：: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 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：:This paper develops a novel control system for functional electrical stimulation (FES) locomotion, which aims to generate normal locomotion for paraplegics via FES. It explores the possibility of applying ideas from biology to engineering. The neural control mechanism of the biological motor system, the central patter...

journal_title：Biological cybernetics

authors： Zhang D,Zhu K

更新日期：2007-01-01 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

abstract：:The response of a healthy lateral eye of Limulus to constant, uniform and sufficiently intense light stimulation, consists of a sustained oscillatory discharge, all ommatidia firing synchronously in bursts, at intervals of about 0.2s (Barlow and Fraioli, 1978). This response has been analysed by a computer simulation,...

journal_title：Biological cybernetics

authors： Barbi M,Ferdeghini EM

更新日期：1980-01-01 00:00:00

abstract：:An "adaptation model" having two stages is introduced and its mathematical properties are examined. The two stages are the "adaptive process" (parameter Kb), which has bleaching-type kinetics, and the "response function" (parameters Kr and n), which incorporates response saturation. In order to study the increment thr...

journal_title：Biological cybernetics

authors： Dawis SM

更新日期：1978-09-28 00:00:00

abstract：:The evolutionary transition from water to land required new locomotor modes and corresponding adjustments of the spinal "central pattern generators" for locomotion. Salamanders resemble the first terrestrial tetrapods and represent a key animal for the study of these changes. Based on recent physiological data from sa...

journal_title：Biological cybernetics

authors： Bicanski A,Ryczko D,Cabelguen JM,Ijspeert AJ

更新日期：2013-10-01 00:00:00

abstract：:Grating cells were discovered in the V1 and V2 areas of the monkey visual cortex by von der Heydt et al. (1992). These cells responded vigorously to grating patterns of appropriate orientation and periodicity. Computational models inspired by these findings were used as texture operator (Kruzinga and Petkov 1995, 1999...

journal_title：Biological cybernetics

authors： Lourens T,Barakova E,Okuno HG,Tsujino H

更新日期：2005-01-01 00:00:00

abstract：:Rapidly adapting (RA) currents expressed in dorsal root ganglia somatosensory neurons reduce their amplitude in response to prolonged and/or repeated mechanical stimulation. Both inactivation of mechanotransducer channels and adaptation of the force acting on the channels have been suggested to independently decrease ...

journal_title：Biological cybernetics

authors： Prešern J,Škorjanc A,Rodič T,Benda J

更新日期：2016-12-01 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：:The purpose of this study was to develop neurobiologically plausible models to account for the response properties of several types of cochlear nucleus neurons. Three cell types--the bushy cells, stellate cells, and fusiform cells--were selected because useful data from intracellular recordings were available for thes...

journal_title：Biological cybernetics

authors： Arle JE,Kim DO

更新日期：1991-01-01 00:00:00

abstract：:A linear analogue network model is proposed to describe the neuronal circuit of the outer retina consisting of cones, horizontal cells, and bipolar cells. The model reflects previous physiological findings on the spatial response properties of these neurons to dim illumination and is expressed by physiological mechani...

journal_title：Biological cybernetics

authors： Yagi T,Ohshima S,Funahashi Y

更新日期：1997-09-01 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：: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：:The experimental identification of a non-linear biologic transducer is often approached via consideration of its response to a stochastic test ensemble, such as Gaussian white noise (Marmarelis and Marmarelis 1978). In this approach, the input-output relationship a deterministic transducer is described by an orthogona...

journal_title：Biological cybernetics

authors： Victor JD

更新日期：1987-01-01 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：:To investigate the dynamic effects of external forces on the displacement of the otolith membrane and subsequent neuronal responses of otoliths, we performed numerical analyses of otolith membrane displacements. In these studies we included the full geometry of the human otolith maculae, including their 3D curvature. ...

journal_title：Biological cybernetics

authors： Jaeger R,Haslwanter T

更新日期：2004-03-01 00:00:00