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 efficiently separated from each other, and thus the analyses were imperfect. In this paper, theoretical evidence and examples are provided to show the defects of the old methods. In order to separate the two components completely, we propose to apply optimal regression analysis with the sine-cosine function series as the fundamental variables. Based on this separation, we defined the orientational selectivity as variation of response strength with orientation and performed integration and averaging to quantify the two properties [cf. Eqs. (5) and (6)]. The present method has the advantages of completeness and accuracy, and can detect some details which would have been missed by other methods. An explanation of the intrinsic implications of the method and our comprehension of directional and orientational selectivities and preferred direction and orientation are also given.
journal_name
Biol Cybernjournal_title
Biological cyberneticsauthors
Li B,Wang Y,Diao Ydoi
10.1007/BF00197609subject
Has Abstractpub_date
1994-01-01 00:00:00pages
281-90issue
3eissn
0340-1200issn
1432-0770journal_volume
70pub_type
杂志文章abstract：:The conductance-based refractory density (CBRD) approach is an efficient tool for modeling interacting neuronal populations. The model describes the firing activity of a statistical ensemble of uncoupled Hodgkin-Huxley-like neurons, each receiving individual Gaussian noise and a common time-varying deterministic input...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-017-0727-9
更新日期：2017-12-01 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：: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
pub_type： 杂志文章
doi：10.1007/BF00198959
更新日期：1993-01-01 00:00:00
abstract：:This article analyzes the question of whether neuroscience allows for mathematical descriptions and whether an interaction between experimental and theoretical neuroscience can be expected to benefit both of them. It is argued that a mathematization of natural phenomena never happens by itself. First, appropriate key ...
journal_title：Biological cybernetics
pub_type： 历史文章,杂志文章
doi：10.1007/s00422-014-0609-3
更新日期：2014-10-01 00:00:00
abstract：:A signal-tuned approach has been recently introduced for modeling stimulus-dependent cortical receptive fields. The approach is based on signal-tuned Gabor functions, which are Gaussian-modulated sinusoids whose parameters are obtained from a "tuning" signal. Given a stimulus to a cell, it is taken as the tuning signa...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-015-0653-7
更新日期：2015-10-01 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：: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：:This article introduces several fundamental concepts in information theory from the perspective of their origins in engineering. Understanding such concepts is important in neuroscience for two reasons. Simply applying formulae from information theory without understanding the assumptions behind their definitions can ...
journal_title：Biological cybernetics
pub_type： 杂志文章,评审
doi：10.1007/s00422-011-0451-9
更新日期：2011-07-01 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：: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
pub_type： 杂志文章
doi：10.1007/s00422-010-0396-4
更新日期：2010-10-01 00:00:00
abstract：:Using the theory of random point processes, a method is presented whereby functional relationships between neurons can be detected and modeled. The method is based on a point process characterization involving stochastic intensities and an additive rate function model. Estimates are based on the maximum likelihood (ML...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00332915
更新日期：1988-01-01 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：: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
pub_type： 杂志文章
doi：10.1007/s00422-011-0447-5
更新日期：2011-07-01 00:00:00
abstract：:Saccadic averaging is the phenomenon that two simultaneously presented retinal inputs result in a saccade with an endpoint located on an intermediate position between the two stimuli. Recordings from neurons in the deeper layers of the superior colliculus have revealed neural correlates of saccade averaging, indicatin...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s004220050450
更新日期：1998-06-01 00:00:00
abstract：:In internally coupled ears (ICE), the displacement of one eardrum creates pressure waves that propagate through air-filled passages in the skull, causing a displacement of the opposing eardrum and vice versa. In this review, a thorough mathematical analysis of the membranes, passages, and propagating pressure waves re...
journal_title：Biological cybernetics
pub_type： 杂志文章,评审
doi：10.1007/s00422-016-0696-4
更新日期：2016-10-01 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：:Two-dimensional scalar fields (e. g. pictures) are often described by way of a linear superposition of simple base functions. It is argued that such decompositions are often unnatural in the sense that the decomposition takes no regard of the structure of the field and it may happen that the parts are more complicated...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00337293
更新日期：1979-08-01 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：: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：:The idea that a sparse representation is the computational principle of visual systems has been supported by Olshausen and Field [Nature (1996) 381: 607-609] and many other studies. On the other hand neurons in the inferotemporal cortex respond to moderately complex features called icon alphabets, and such neurons res...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s004220000149
更新日期：2000-08-01 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
pub_type： 杂志文章
doi：10.1007/BF00336995
更新日期：1986-01-01 00:00:00
abstract：:Depolarization of an excitable membrane has a dual effect; excitatory in that it causes rapid opening of calcium and/or sodium channels but inhibitory in that it also causes those channels to inactivate. We considered whether apparently paradoxical or dual behavior might be exhibited by excitatory and inhibitory synap...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00197289
更新日期：1991-01-01 00:00:00
abstract：:A minimum mean square error (MMSE) estimation scheme is employed to identify the synaptic connectivity in neural networks. This new approach can substantially reduce the amount of data and the computational cost involved in the conventional correlation methods, and is suitable for both nonstationary and stationary neu...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00198088
更新日期：1991-01-01 00:00:00
abstract：:A mathematical model for describing dynamic phenomena in the olfactory bulb is presented. The nature of attractors and the bifurcation sequences in terms of the lateral connection strength in the mitral layer are studied numerically. Chaotic activity has only been found in the case of strong excitatory coupling. Synap...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00201408
更新日期：1993-01-01 00:00:00
abstract：:Two computer controlled experiments in an olfactory cross-modal matching task, using two-component odour mixtures matched against bar diagrams, were designed so that stimulus presentation was contingent upon the recent performance of the subject; stimuli that were relatively poorly (in experiment 1) or well (in experi...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00336981
更新日期：1985-01-01 00:00:00
abstract：:Responses from neurons of the vestibular nuclei were recorded in N2O-anaesthetized cats. Most neurons in the rostral parts of the nuclei responded to bimodal visual-vestibular stimulation, following a trapezoidal velocity profile. Both combinations of the two stimuli were tested: rotation of the animal with stationary...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00347638
更新日期：1980-01-01 00:00:00
abstract：:It has been proved that a detection process may be accounted for by a simple two-state model consisting of a collection of linear analysers followed by a maximum-output decision rule provided that a set of all threshold stimuli is convex. A non-parametrical method to identify the analysers constituting such a model is...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/BF00199546
更新日期：1995-11-01 00:00:00
abstract：:This work proposes a model of visual bottom-up attention for dynamic scene analysis. Our work adds motion saliency calculations to a neural network model with realistic temporal dynamics [(e.g., building motion salience on top of De Brecht and Saiki Neural Networks 19:1467-1474, (2006)]. The resulting network elicits ...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s00422-012-0542-2
更新日期：2013-04-01 00:00:00
abstract：:This article provides an introductory overview of the state of research on Hierarchical Bayesian Modeling in cognitive development. First, a brief historical summary and a definition of hierarchies in Bayesian modeling are given. Subsequently, some model structures are described based on four examples in the literatur...
journal_title：Biological cybernetics
pub_type： 杂志文章,评审
doi：10.1007/s00422-016-0686-6
更新日期：2016-06-01 00:00:00
abstract：:In this work we show the application of a measure of entropy defined from the wavelet transform, namely the wavelet entropy (WS), to the study of event-related potentials (ERPs). WS was computed for ERPs recorded from nine healthy subjects with three different types of stimuli, among them target stimuli in a cognitive...
journal_title：Biological cybernetics
pub_type： 杂志文章
doi：10.1007/s004220000212
更新日期：2001-04-01 00:00:00
