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 are illustrated and verified by means of a computer simulation. The results allow estimates of the accuracy of depth and egomotion estimates as a function of the accuracy of data sampling and the width of field of view, as well as estimates of the interaction between rotational and translational components of the movement.
journal_name
Biol Cybernjournal_title
Biological cyberneticsauthors
Koenderink JJ,van Doorn AJdoi
10.1007/BF00365219subject
Has Abstractpub_date
1987-01-01 00:00:00pages
247-54issue
4eissn
0340-1200issn
1432-0770journal_volume
56pub_type
杂志文章abstract::In many applications of signal processing, especially in communications and biomedicine, preprocessing is necessary to remove noise from data recorded by multiple sensors. Typically, each sensor or electrode measures the noisy mixture of original source signals. In this paper a noise reduction technique using independ...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-001-0298-6
更新日期:2002-04-01 00:00:00
abstract::In a seminal paper, Witkin (1981) derived a model of surface slant and tilt recovery based on the statistics of the orientations of texture elements (texels) on a planar surface. This model made use of basic mathematical properties of probability distributions to formulate a posterior distribution on slant and tilt gi...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-010-0389-3
更新日期:2010-09-01 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
pub_type: 杂志文章
doi:10.1007/s00422-012-0491-9
更新日期:2012-07-01 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::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
pub_type: 杂志文章
doi:10.1007/s00422-011-0449-3
更新日期:2011-08-01 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
pub_type: 杂志文章
doi:10.1007/BF00336183
更新日期:1984-01-01 00:00:00
abstract::The high speed of saccades means that they cannot be guided by visual feedback, so that any saccadic control system must know in advance the correct output signals to fixate a particular retinal position. To investigate neural-net architectures for learning this inverse-kinematics problem we simulated a 4 deg-of-freed...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00196450
更新日期:1991-01-01 00:00:00
abstract::1. Results from the companion paper were incorporated into a physiologically realistic computer model of the three principal cell types (PD/AB, LP, PY) of the pyloric network in the stomatogastric ganglion. Parameters for the model were mostly calculated (sometimes estimated) from experimental data rather than fitting...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00337411
更新日期:1979-08-01 00:00:00
abstract::Response patterns recorded with 30 microelectrodes from area 17 of anaesthetized monkeys are analysed. A proportion of the patterns are used to define prototype response patterns. These in turn are used to recognize the stimulus from further non-averaged response patterns. In comparison, recognition by a feedforward '...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00194921
更新日期:1996-04-01 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
pub_type: 杂志文章,评审
doi:10.1007/s00422-011-0446-6
更新日期:2011-07-01 00:00:00
abstract::Neurons transmit information as action potentials or spikes. Due to the inherent randomness of the inter-spike intervals (ISIs), probabilistic models are often used for their description. Cumulative damage (CD) distributions are a family of probabilistic models that has been widely considered for describing time-relat...
journal_title:Biological cybernetics
pub_type: 杂志文章,评审
doi:10.1007/s00422-015-0651-9
更新日期:2015-10-01 00:00:00
abstract::Beck (1972, 1973) hypothesized that textural segmentation occurs strongly on the basis of simple properties such as brightness, color, size, and the slopes of contours and lines of the elemental descriptors of a texture or textural elements. The experiment reported supports the hypothesis that specific stimulus featur...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00344396
更新日期:1983-01-01 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
pub_type: 杂志文章
doi:10.1007/s004220050521
更新日期:1999-04-01 00:00:00
abstract::The vestibuloocular reflex and other oculomotor functions are subserved by populations of neurons operating in parallel. This distributed aspect of the system's organization has been largely ignored in previous block diagram models. Neurons that transmit oculomotor signals, such as those in the vestibular nucleus (VN)...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00204592
更新日期:1989-01-01 00:00:00
abstract::The action potentials (impulses) produced by pairs of neighboring retinal ganglion cells often show a tendency either to fire in close temporal synchrony or to avoid temporal synchrony. This cross-correlation (a rate of "coincidences" that differs from that expected by chance) has been exploited as a window into retin...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-004-0492-4
更新日期:2004-09-01 00:00:00
abstract::This paper deals with characterization and modelling of human handwriting motion from two forearm muscle activity signals, called electromyography signals (EMG). In this work, an experimental approach was used to record the coordinates of a pen tip moving on the (x, y) plane and EMG signals during the handwriting act....
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-015-0670-6
更新日期:2016-02-01 00:00:00
abstract::Recent results demonstrate techniques for fully quantitative, statistical inference of the dynamics of individual neurons under the Hodgkin-Huxley framework of voltage-gated conductances. Using a variational approximation, this approach has been successfully applied to simulated data from model neurons. Here, we use t...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-014-0615-5
更新日期:2014-08-01 00:00:00
abstract::We extend a quantitative model for low-voltage, slow-wave excitability based on the T-type calcium current (Wang et al. 1991) by juxtaposing it with a Hodgkin-Huxley-like model for fast sodium spiking in the high voltage regime to account for the distinct firing modes of thalamic neurons. We employ bifurcation analysi...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00239616
更新日期:1994-01-01 00:00:00
abstract::We analyze the effect of weak-noise-induced transitions on the dynamics of the FitzHugh-Nagumo neuron model in a bistable state consisting of a stable fixed point and a stable unforced limit cycle. Bifurcation and slow-fast analysis give conditions on the parameter space for the establishment of this bi-stability. In ...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-018-0770-1
更新日期:2018-10-01 00:00:00
abstract::We propose an approach for desynchronization in an ensemble of globally coupled neural oscillators. The impact of washout filter aided mean field feedback on population synchronization process is investigated. By blocking the Hopf bifurcation of the mean field, the controller desynchronizes the ensemble. The technique...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-009-0334-5
更新日期:2009-09-01 00:00:00
abstract::The peripheral auditory system of lizards has been extensively studied, because of its remarkable directionality. In this paper, we review the research that has been performed on this system using a biorobotic approach. The various robotic implementations developed to date, both wheeled and legged, of the auditory mod...
journal_title:Biological cybernetics
pub_type: 杂志文章,评审
doi:10.1007/s00422-016-0701-y
更新日期:2016-10-01 00:00:00
abstract::A new method based on neural networks to cluster proteins into families is described. The network is trained with the Kohonen unsupervised learning algorithm, using matrix pattern representations of the protein sequences as inputs. The components (x, y) of these 20 x 20 matrix patterns are the normalized frequencies o...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00204658
更新日期:1991-01-01 00:00:00
abstract::We have attempted to reconcile the different patterns of distribution of interspike intervals that are found in motoneurones made to discharge by intracellular injection of constant current in reduced animal preparations and by voluntary control in human subjects. We recorded long spike trains from single motor units ...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00204057
更新日期:1995-07-01 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::A model calculation is presented simulating the coordinated interaction between the walking legs of a multi-legged animal. The neural network consists of separate modules with oscillatory capabilities. It has the ability to adjust the necessary parameters for producing a coordinated interaction between the modules in ...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00200811
更新日期:1993-01-01 00:00:00
abstract::The trace version of classical conditioning is used as a prototypical hippocampal-dependent task to study the recoding sequence prediction theory of hippocampal function. This theory conjectures that the hippocampus is a random recoder of sequences and that, once formed, the neuronal codes are suitable for prediction....
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-005-0568-9
更新日期:2005-06-01 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::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
pub_type: 杂志文章
doi:10.1007/BF00198772
更新日期:1993-01-01 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
pub_type: 杂志文章
doi:10.1007/s00422-020-00838-6
更新日期:2020-06-01 00:00:00
abstract::Among the various possible criteria guiding eye movement selection, we investigate the role of position uncertainty in the peripheral visual field. In particular, we suggest that, in everyday life situations of object tracking, eye movement selection probably includes a principle of reduction of uncertainty. To evalua...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-009-0292-y
更新日期:2009-03-01 00:00:00