Abstract:
:ICE stands for internally coupled ears. More than half of the terrestrial vertebrates, such as frogs, lizards, and birds, as well as many insects, are equipped with ICE that utilize an air-filled cavity connecting the two eardrums. Its effect is pronounced and twofold. On the basis of a solid experimental and mathematical foundation, it is known that there is a low-frequency regime where the internal time difference (iTD) as perceived by the animal may well be 2-5 times higher than the external ITD, the interaural time difference, and that there is a frequency plateau over which the fraction iTD/ITD is constant. There is also a high-frequency regime where the internal level (amplitude) difference iLD as perceived by the animal is much higher than the interaural level difference ILD measured externally between the two ears. The fundamental tympanic frequency segregates the two regimes. The present special issue devoted to "internally coupled ears" provides an overview of many aspects of ICE, be they acoustic, anatomical, auditory, mathematical, or neurobiological. A focus is on the hotly debated topic of what aspects of ICE animals actually exploit neuronally to localize a sound source.
journal_name
Biol Cybernjournal_title
Biological cyberneticsauthors
van Hemmen JL,Christensen-Dalsgaard J,Carr CE,Narins PMdoi
10.1007/s00422-016-0702-xsubject
Has Abstractpub_date
2016-10-01 00:00:00pages
237-246issue
4-5eissn
0340-1200issn
1432-0770pii
10.1007/s00422-016-0702-xjournal_volume
110pub_type
社论abstract::The proposal that rod outer segment length is optimal with respect to photon absorption and noise control is extended and tested in a number of species. We find good agreement with our optimality criterion in duplex retinae where rods act as detectors of one or a few photons, but not in all rod retinae nor in those wh...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00203666
更新日期:1992-01-01 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
pub_type: 杂志文章
doi:10.1007/BF00197609
更新日期:1994-01-01 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::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::Trajectories in human aimed movements are inherently variable. Using the concept of positional variance profiles, such trajectories are shown to be decomposable into two phases: In a first phase, the variance of the limb position over many trajectories increases rapidly; in a second phase, it then decreases steadily. ...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-020-00853-7
更新日期:2020-12-01 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::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::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 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
pub_type: 杂志文章
doi:10.1007/BF00354987
更新日期:1987-01-01 00:00:00
abstract::Flies have the capability to visually track small moving targets, even across cluttered backgrounds. Previous computational models, based on figure detection (FD) cells identified in the fly, have suggested how this may be accomplished at a neuronal level based on information about relative motion between the target a...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-004-0518-y
更新日期:2004-12-01 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::Simulations of neural activity are commonly based on differential equations. We address the question what can be achieved with a simplified discrete model. The proposed model resembles artificial neural networks enriched with additional biologically inspired features. A neuron has several states, and the state transit...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-020-00826-w
更新日期:2020-06-01 00:00:00
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
pub_type: 杂志文章
doi:10.1007/BF00337392
更新日期:1979-03-19 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::The present report presents an attempt to define the physiological parameter used to describe "voice tremor" in psychological stress evaluating machines, and to find its sources. This parameter was found to be a low frequency (5-20 Hz) random process which frequency modulates the vocal cord waveform and (independently...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00340063
更新日期:1983-01-01 00:00:00
abstract::Some interesting properties on pattern separation have been shown through researches by neural models of cerebellar cortex. It seems to us that those results are a part of the properties of pattern separation. A two layer random nerve net with inhibitory connections is given as a model of the cerebellar cortex. The mo...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00336858
更新日期:1979-09-01 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
pub_type: 杂志文章
doi:10.1007/s004220050383
更新日期:1997-10-01 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
pub_type: 杂志文章
doi:10.1007/s00422-012-0538-y
更新日期:2013-10-01 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::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 ar...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00365219
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
pub_type: 杂志文章
doi:10.1007/s00422-004-0477-3
更新日期:2004-06-01 00:00:00
abstract::A powerful technique for the analysis of nonlinear oscillators is the rigorous reduction to phase models, with a single variable describing the phase of the oscillation with respect to some reference state. An analog to phase reduction has recently been proposed for systems with a stable fixed point, and phase reducti...
journal_title:Biological cybernetics
pub_type: 杂志文章,评审
doi:10.1007/s00422-018-0780-z
更新日期:2019-04-01 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::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::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
pub_type: 杂志文章
doi:10.1007/s00422-012-0530-6
更新日期:2012-11-01 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::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::Texture gradients are systematic variations in projected surface texture. It is expected that image variables such as texture density or size carry information about the surface orientation and distance. This article reexamines the information content of texture gradients and reviews the relevant psychophysics. Slant ...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/BF00336727
更新日期:1981-01-01 00:00:00
abstract::Panoramic image differences can be used for view-based homing under natural outdoor conditions, because they increase smoothly with distance from a reference location (Zeil et al., J Opt Soc Am A 20(3):450-469, 2003). The particular shape, slope and depth of such image difference functions (IDFs) recorded at any one p...
journal_title:Biological cybernetics
pub_type: 杂志文章
doi:10.1007/s00422-007-0147-3
更新日期:2007-05-01 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
pub_type: 杂志文章
doi:10.1007/s00422-018-0778-6
更新日期:2019-04-01 00:00:00