Relevance of the single ommatidium performance in determining the oscillatory response of the Limulus retina.

abstract：:It is shown that a convolution with certain reasonable receptive field (RF) profiles yields the exact partial derivatives of the retinal illuminance blurred to a specified degree. Arbitrary concatenations of such RF profiles yield again similar ones of higher order and for a greater degree of blurring. By replacing th...

journal_title：Biological cybernetics

authors： Koenderink JJ,van Doorn AJ

更新日期：1987-01-01 00:00:00

abstract：:We develop a novel optimal control algorithm to change the phase of an oscillator using a minimum energy input, which also minimizes the oscillator's transversal distance to the uncontrolled periodic orbit. Our algorithm uses a two-dimensional reduction technique based on both isochrons and isostables. We develop a no...

journal_title：Biological cybernetics

authors： Monga B,Moehlis J

更新日期：2019-04-01 00:00:00

abstract：:In primates, it is well known that there is a consistent relationship between the duration, peak velocity and amplitude of saccadic eye movements, known as the 'main sequence'. The reason why such a stereotyped relationship evolved is unknown. We propose that a fundamental constraint on the deployment of foveal vision...

journal_title：Biological cybernetics

authors： Harris CM,Wolpert DM

更新日期：2006-07-01 00:00:00

abstract：:Simulation results of bistable perception due to ambiguous visual stimuli are presented which are obtained with a behavioral nonlinear dynamics model using perception-attention-memory coupling. This model provides an explanation of recent experimental results of Gao et al. (Cogn Process 7:105-112, 2006a) and it suppor...

journal_title：Biological cybernetics

authors： Fürstenau N

更新日期：2010-09-01 00:00:00

abstract：:The availability of a simple-to-use, automatic measurement system for noninvasive flow estimation is imperative, given the clinical demand for an acceptable noninvasive procedure rather than the standard invasive procedure of thermodilution. A method for calculating cardiac output from noninvasively derived pressure p...

journal_title：Biological cybernetics

authors： Redling JD,Akay M

更新日期：1997-08-01 00:00:00

abstract：:We analyzed cyclic enzyme systems, one of the best candidates for biochemical switching devices, especially focusing on their control mode against external perturbations. Since these systems have the reliability of ON-OFF types of operation (McCulloch-Pitts' neuronic equation), we shall present here the mechanical dif...

journal_title：Biological cybernetics

authors： Okamoto M,Sakai T,Hayashi K

更新日期：1988-01-01 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：:The notion that biological systems come to embody optimal solutions seems consistent with the competitive drive of evolution. It has been used to interpret many examples of sensorimotor behavior. It is attractive from the viewpoint of control engineers because it solves the redundancy problem by identifying the one op...

journal_title：Biological cybernetics

authors： Loeb GE

更新日期：2012-12-01 00:00:00

abstract：:We present a controls systems model of horizontal-plane head movements during perturbations of the trunk, which for the first time interfaces a model of the human head with neural feedback controllers representing the vestibulocollic (VCR) and the cervicocollic (CCR) reflexes. This model is homeomorphic such that mode...

journal_title：Biological cybernetics

authors： Peng GC,Hain TC,Peterson BW

更新日期：1996-10-01 00:00:00

abstract：:The frequency sensitivity of weak periodic signal detection has been studied via numerical simulations for both a single neuron and a neuronal network. The dependence of the critical amplitude of the signal upon its frequency and a resonance between the intrinsic oscillations of a neuron and the signal could account f...

journal_title：Biological cybernetics

authors： Yu Y,Liu F,Wang W

更新日期：2001-03-01 00:00:00

abstract：:Cortical circuits have been proposed to encode information by forming stable spatially structured attractors. Experimentally in the primary somatosensory cortex of the monkey, temporally invariant stimuli lead to spatially structured activity patterns. The purpose of this work is to study a recurrent cortical neural n...

journal_title：Biological cybernetics

authors： Gutkin BS,Smith CE

更新日期：2000-06-01 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：: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 relationship between disparity and ocular vergence was investigated under closed-loop as well as under open-loop viewing conditions. First we examined whether vergence responded similarly to disparity presented under open-loop and closed-loop conditions. Similar response were observed in both conditions. The direc...

journal_title：Biological cybernetics

authors： Pobuda M,Erkelens CJ

更新日期：1993-01-01 00:00:00

abstract：:The mechanisms that control the limbs position during rhythmic voluntary oscillations were investigated in ten subjects, who were asked to synchronise the lower peak of their hand or foot rhythmic oscillations to a metronome beat. The efficacy of the "position control" was estimated by measuring the degree of synchron...

journal_title：Biological cybernetics

authors： Esposti R,Cavallari P,Baldissera F

更新日期：2007-08-01 00:00:00

abstract：:We propose a function-oriented model of the visual cortex. The model addresses an essential task of the visual system: to detect and represent objects. These are defined as sets, which reappear in the input with invariant inner relations. A network, incorporating an idealized description of anatomical and physiologica...

journal_title：Biological cybernetics

authors： Neven H,Aertsen A

更新日期：1992-01-01 00:00:00

abstract：:Stochastic resonance is demonstrated in a simple energy detector model, as a non-monotonic relationship between signal-to-noise ratio and detection of a sinusoid signal in bandpass-limited Gaussian noise. The behaviour of the model detecting signals of various intensities and signal-to-noise ratios was investigated. S...

journal_title：Biological cybernetics

authors： Tougaard J

更新日期：2000-11-01 00:00:00

abstract：:How do biological agents plan and organise a smooth accurate path to shift from one smooth mode of behaviour to another as part of graceful movement that is both plastic and controlled? This paper addresses the question in conducting a novel shape analysis of approach and adjustment phases in rapid voluntary target ai...

journal_title：Biological cybernetics

authors： Weir MK,Wale AP

更新日期：2011-08-01 00:00:00

abstract：:Directional and orientational components usually coexist and are mixed in the cell's overall responses when moving optical stimuli are used to study the response characteristics of visual neurons. While these two properties were quantified with all the previous methods for data analysis, their effects could not be eff...

journal_title：Biological cybernetics

authors： Li B,Wang Y,Diao Y

更新日期：1994-01-01 00:00:00

abstract：:Color vision in humans is independent over a wide range of the spectral composition of the illuminating light (Young 1807; Hering 1879). The retinex theory accounts for this color constancy by assuming that for each of the three waveband channels determined by the retinal cones a global lightness record of the scene i...

journal_title：Biological cybernetics

authors： Wehrhahn C

更新日期：1987-01-01 00:00:00

abstract：:Rotations of the eye are generated by the torques that the eye muscles apply to the eye. The relationship between eye orientation and the direction of the torques generated by the extraocular muscles is therefore central to any understanding of the control of three-dimensional eye movements of any type. We review the ...

journal_title：Biological cybernetics

authors： Koene AR,Erkelens CJ

更新日期：2004-06-01 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：: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：:An initial test for a theory of lateral hypothalamic regulation of electrocortical activity is undertaken. The theory supposes lateral hypothalamic input directly or indirectly damps telencephalic resonances involving linear wave phenomena, enabling this pathway to act as parametric control of information processing i...

journal_title：Biological cybernetics

authors： Wright JJ,Kydd RR

更新日期：1984-01-01 00:00:00

abstract：:The order parameter equation for the relative phase of correlated hand movements, derived in a previous paper by Haken et al. (1985), is extended to a time-dependent stochastic differential equation. Its solutions are determined close to stationary points and for the transition region. Remarkably good agreement betwee...

journal_title：Biological cybernetics

authors： Schöner G,Haken H,Kelso JA

更新日期：1986-01-01 00:00:00

abstract：:Earlier experimental studies by one of us (Kelso, 1981a, 1984) have shown that abrupt phase transitions occur in human hand movements under the influence of scalar changes in cycling frequency. Beyond a critical frequency the originally prepared out-of-phase, antisymmetric mode is replaced by a symmetrical, in-phase m...

journal_title：Biological cybernetics

authors： Haken H,Kelso JA,Bunz H

更新日期：1985-01-01 00:00:00

abstract：:Taste buds endure extreme changes in temperature, pH, osmolarity, so on. Even though taste bud cells are replaced in a short span, they contribute to consistent taste reception. Each taste bud consists of about 50 cells whose networks are assumed to process taste information, at least preliminarily. In this article, w...

journal_title：Biological cybernetics

authors： Tateno K,Igarashi J,Ohtubo Y,Nakada K,Miki T,Yoshii K

更新日期：2011-07-01 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：:This paper proposes multiport parallel and multidirectional intraconnected associative memories of outer product type with reduced interconnections. Some new reduced order memory architectures such as k-directional and k-port parallel memories are suggested. These architectures are, also, very suitable for implementat...

journal_title：Biological cybernetics

authors： Bhatti AA

更新日期：2009-05-01 00:00:00

abstract：:In this study, human arm movement was reconstructed from electromyography (EMG) signals using a forward dynamics model acquired by an artificial neural network within a modular architecture. Dynamic joint torques at the elbow and shoulder were estimated for movements in the horizontal plane from the surface EMG signal...

journal_title：Biological cybernetics

authors： Koike Y,Kawato M

更新日期：1995-09-01 00:00:00