Abstract:
:The chemical control of respiration provides for the maintenance of energy and substance equilibrium primarily and for the homoeostatic stability of the chemical blood parameters secondarily. Based on results having been obtained from an appropriate state space model some findings on respiration can be reproduced. In addition to the true qualitative reflecting the steady state at work performance, the contribute of separate chemical drives to the whole ventilation are represented correctly, suggesting the unneccisity of any additional specific work drives. Nervous influences of ventilation besides of its chemical control are not suitable to guarantee its controllability, they represent only disturbances mobilizing it. Coupled organ systems take part on transmitting primary afferent information about the chemical condition of the total metabolism, which proved to be necessary and sufficient for the chemical control activity.
journal_name
Biol Cybernjournal_title
Biological cyberneticsauthors
Balla Kdoi
10.1007/BF00335348subject
Has Abstractpub_date
1982-01-01 00:00:00pages
17-25issue
1eissn
0340-1200issn
1432-0770journal_volume
46pub_type
杂志文章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
pub_type: 杂志文章
doi:10.1007/s004220000176
更新日期:2000-11-01 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
pub_type: 杂志文章
doi:10.1007/s00422-006-0097-1
更新日期:2006-11-01 00:00:00
abstract::The question was investigated whether long-lasting transients of activity, observed to occur in the intact cerebral cortex (EEG slow (delta) waves and 'K' complexes) as well as in isolated tissues cultured in vitro, can also emerge in a model network of excitatory and inhibitory cells. We show that such transients can...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00204400
更新日期:1992-01-01 00:00:00
abstract::This study is concerned with synaptic reorganization in local neuronal networks. Within networks of 30 neurons, an initial disequilibrium in connectivity has to be compensated by reorganization of synapses. Such plasticity is not a genetically determined process, but depends on results of neuronal interaction. Neurobi...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00364134
更新日期:1988-01-01 00:00:00
abstract::This paper describes the aspects involved in modelling a multi-robot system from a human motor control perspective. The human motor control system has a hierarchical and decentralised structure, and building a control system for a multi-robot system that attains human features would require a decomposable model. Decom...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-003-0427-5
更新日期:2003-10-01 00:00:00
abstract::We study the dynamics of a system of coupled nonlinear oscillators that has been used to model coordinated human movement behavior. In contrast to earlier work we examine the case where the two component oscillators have different eigenfrequencies. Problems related to the decomposition of a time series (from an experi...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00199134
更新日期:1996-01-01 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
pub_type: 杂志文章
doi:10.1007/BF00355540
更新日期:1986-01-01 00:00:00
abstract::Inner hair cells (IHCs) transform the mechanical movements of the basilar membrane into electrical impulses. The impulse coding of the IHCs is the main information carrier in the auditory process and is the basis for improvements of cochlea implants as well as for low rate, high-quality speech processing and compressi...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s004220050582
更新日期:2000-04-01 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
pub_type: 杂志文章
doi:10.1007/s004220050510
更新日期:1999-02-01 00:00:00
abstract::Neuromuscular systems are stabilized and controlled by both feedforward and feedback signals. Feedforward pathways driven by central pattern generators (CPGs), in conjunction with preflexive mechanical reaction forces and nonlinear muscle properties, can produce stable stereotypical gaits. Feedback is nonetheless pres...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-010-0383-9
更新日期:2010-06-01 00:00:00
abstract::Based on a complexity analysis of mutual information transmission of EEG developed by us [Xu J, Liu Z, Liu R, Yang Q (1997) Physica D 106: 363-374], dynamic processes of the complexity of mutual information transmission in human brains were studied. To diminish possible problems due to coarse graining preprocessing, s...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s004220000158
更新日期:2000-10-01 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
pub_type: 杂志文章
doi:10.1007/s00422-020-00840-y
更新日期:2020-10-01 00:00:00
abstract::Spikes in the membrane potential of neurons comprise the currency of information processing in the brain. The ability of neurons to convert any information present across their multiple inputs into a significant modification to the pattern of their emitted spikes depends on the rate at which they emit spikes. If the m...
journal_title:Biological cybernetics
pub_type: 杂志文章,评审
doi:10.1007/s00422-018-0768-8
更新日期:2019-04-01 00:00:00
abstract::This paper deals with the problem of representing and generating unconstrained aiming movements of a limb by means of a neural network architecture. The network produced time trajectories of a limb from a starting posture toward targets specified by sensory stimuli. Thus the network performed a sensory-motor transform...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF02414903
更新日期:1989-01-01 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
pub_type: 杂志文章
doi:10.1007/BF02331340
更新日期:1990-01-01 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
pub_type: 杂志文章
doi:10.1007/BF00363955
更新日期:1988-01-01 00:00:00
abstract::We discuss natural limitations on motor performance caused by the time delay required for feedback signals to propagate within the human body or mechanical control systems. By considering a very simple delayed linear servomechanism model, we show there exists a best possible speed-accuracy trade-off similar to Fitts' ...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-008-0235-z
更新日期:2008-07-01 00:00:00
abstract::It is shown how field potentials due to neuronal membrane processes can be computed by means of a digital computer system. The essence of the method consists in evaluating a discrete expression for the field potential as a function of membrane potentials. This expression is considered as a three-dimensional convolutio...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00347640
更新日期:1980-01-01 00:00:00
abstract::Nonlinear oscillators are usually utilized by bionic scientists for establishing central pattern generator models for imitating rhythmic motions by bionic scientists. In the natural word, many rhythmic motions possess asymmetric time ratios, which means that the forward and the backward motions of an oscillating proce...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-018-0746-1
更新日期:2018-06-01 00:00:00
abstract::We propose a model for the first stage of the cortical transformation of the visual image based on the principle that the cortex encodes the information with the minimum number of channels mathematically needed. We restrict our model to be consistent with the data on size adaptations, the known relationships of acuity...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00336972
更新日期:1982-01-01 00:00:00
abstract::Computational and behavioral studies suggest that visual motion discrimination is based on quadratic nonlinearities. This raises the question of whether the behavior of motion sensitive neurons early in the visual system is actually quadratic. Theoretical studies show that mechanisms proposed for retinal directional s...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00203629
更新日期:1990-01-01 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
pub_type: 杂志文章
doi:10.1007/BF00205980
更新日期:1994-01-01 00:00:00
abstract::The concerted and self-organizing behavior of spinal cord segments in generating locomotor patterns is modulated by afferent sensory information and controlled by descending pathways from the brainstem, cerebellum, or cortex. The purpose of this study was to define a minimal set of parameters that could control a simi...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-002-0335-0
更新日期:2003-01-01 00:00:00
abstract::In vision of everyday scenes, features requiring detection are frequently observed in the presence of suprathreshold background structures. Detection of such features is a contrast discrimination task and is often necessary for the subsequent process of recognition. In order to provide a description of this task, cont...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00326678
更新日期:1981-01-01 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
pub_type: 杂志文章
doi:10.1007/s00422-003-0399-5
更新日期:2003-07-01 00:00:00
abstract::The Hodgkin-Huxley equations with a slight modification are investigated, in which the inactivation process (h) of sodium channels or the activation process of potassium channels (n) is slowed down. We show that the equations produce a variety of action potential waveforms ranging from a plateau potential, such as in ...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/PL00007996
更新日期:2001-07-01 00:00:00
abstract::A visual model for object detection is proposed. In order to make the detection ability comparable with existing technical methods for object detection, an evolution equation of neurons in the model is derived from the computational principle of active contours. The hierarchical structure of the model emerges naturall...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-006-0088-2
更新日期:2006-09-01 00:00:00
abstract::For the Ornstein-Uhlenbeck neuronal model a quantitative method is proposed for the estimation of the two parameters characterizing the unknown input process, namely the neuron's mean input per unit time mu and the infinitesimal standard deviation per unit time sigma. This method is based on the experimentally observe...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00201423
更新日期:1995-08-01 00:00:00
abstract::A model is presented which accounts for many characteristic response properties used to classify anuran ganglion cell types while being consistent with data concerning interneurons. In the model color is ignored and input stimuli are assumed to be only black and white at high contrast. We show that accurate ganglion c...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00201980
更新日期:1991-01-01 00:00:00
abstract::Tongue movements during speech production have been investigated by means of a simple yet realistic biomechanical model, based on a finite elements modeling of soft tissues, in the framework of the equilibrium point hypothesis (lambda-model) of motor control. In particular, the model has been applied to the estimation...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s004220050362
更新日期:1997-07-01 00:00:00