Recognition and tracking of impulse patterns with delay adaptation in biology-inspired pulse processing neural net (BPN) hardware.

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

authors： Shaikh D,Hallam J,Christensen-Dalsgaard J

更新日期：2016-10-01 00:00:00

abstract：:In this paper, we present a continuous attractor network model that we hypothesize will give some suggestion of the mechanisms underlying several neural processes such as velocity tuning to visual stimulus, sensory discrimination, sensorimotor transformations, motor control, motor imagery, and imitation. All of these ...

journal_title：Biological cybernetics

authors： Sauser EL,Billard AG

更新日期：2006-12-01 00:00:00

abstract：:Within a wide class of multichannel models of the visual system it is suggested that spatial distributions of luminance are processed by the independent activation of grating detectors, or spatial frequency channels. Probability summation is often described in terms of Quick's nonlinear pooling model [Quick RF (1974) ...

journal_title：Biological cybernetics

authors： Meinhardt G

更新日期：1999-09-01 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

authors： Higgins CM,Pant V

更新日期：2004-12-01 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：:The problems related to kinematic redundancy in both task and joint space were investigated for arm prehension movements in this paper. After a detailed analysis of kinematic redundancy of the arm, it is shown that the redundancy problem is ill posed only for the control of hand orientation. An experiment was then des...

journal_title：Biological cybernetics

authors： Wang X

更新日期：1999-06-01 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

authors： Bauer R

更新日期：1980-01-01 00:00:00

abstract：:We report on the ability of human observers in judging their direction of translation from sparse, moving random dot patterns for varying extents of 3--D rotation. The observers have to discriminate possible axes of translation with angular separations of 2.5 deg or 5 deg. The field of view is either 20 X 20 deg or 10...

journal_title：Biological cybernetics

authors： Rieger JH,Toet L

更新日期：1985-01-01 00:00:00

abstract：:Reported here are the results from two experiments designed to investigate Mateeff and Gourevich's (1983, 1984) claim that adult observers make large constant errors when judging the direction of briefly presented peripheral targets, with respect to a continuously visible scale. Experiment 1 involved a virtually exact...

journal_title：Biological cybernetics

authors： Mapp AP,Barbeito R,Bedell HE,Ono H

更新日期：1989-01-01 00:00:00

abstract：:The myoskeletal inverse dynamics problem and the myocybernetic control inverse problem were investigated with respect to their ill-posedness. The first problem consists of finding from observed experimental motion and reaction force data the resultant muscle moments that generated the observed motion, while the second...

journal_title：Biological cybernetics

authors： Hatze H

更新日期：2000-02-01 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

authors： Sakitt B,Barlow HB

更新日期：1982-01-01 00:00:00

abstract：:We propose a simple measure of neural sensitivity for characterizing stimulus coding. Sensitivity is defined as the fraction of neurons that show positive responses to n stimuli out of a total of N. To determine a positive response, we propose two methods: Fisherian statistical testing and a data-driven Bayesian appro...

journal_title：Biological cybernetics

authors： Rodríguez FB,Huerta R

更新日期：2009-04-01 00:00:00

abstract：:Following Kohonen and using the Hebb principle, we define a self organizing stochastic process, which is a simple modelization of the retinotopy, i.e. the establishment of well-ordered connexions between the retina and the cortex. We give some mathematical results about convergence of this process. These results are i...

journal_title：Biological cybernetics

authors： Cottrell M,Fort JC

更新日期：1986-01-01 00:00:00

abstract：:Cognitive theory has decomposed human mental abilities into cognitive (sub) systems, and cognitive neuroscience succeeded in disclosing a host of relationships between cognitive systems and specific structures of the human brain. However, an explanation of why specific functions are located in specific brain loci had ...

journal_title：Biological cybernetics

authors： Pulvermüller F,Garagnani M,Wennekers T

更新日期：2014-10-01 00:00:00

abstract：:The short-term (i.e., days) and long-term (i.e., months) effects of adaptation to posturography examinations were investigated in 12 normal subjects who were repeatedly examined for five consecutive days and again after 90 days. The examinations were conducted both with eyes open and closed, and the perturbations were...

journal_title：Biological cybernetics

authors： Fransson PA,Tjernström F,Hafström A,Magnusson M,Johansson R

更新日期：2002-05-01 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：:The ability to locomote is a defining characteristic of all animals. Yet, all but the most trivial forms of navigation are poorly understood. Here we report and discuss the analytical results of an in-depth study of a simple navigation problem. In principle, there are two strategies for navigating a straight course. O...

journal_title：Biological cybernetics

authors： Cheung A,Zhang S,Stricker C,Srinivasan MV

更新日期：2008-09-01 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

authors： Davenport R,Jakobsson E,Gerber B

更新日期：1991-01-01 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

authors： Dean P,Mayhew JE,Thacker N,Langdon PM

更新日期：1991-01-01 00:00:00

abstract：:This report demonstrates the effectiveness of two processes in constructing simple feedforward networks which perform good transformations on their inputs. Good transformations are characterized by the minimization of two information measures: the information loss incurred with the transformation and the statistical d...

journal_title：Biological cybernetics

authors： Adelsberger-Mangan DM,Levy WB

更新日期：1993-01-01 00:00:00

abstract：:Spike-timing-dependent plasticity (STDP) determines the evolution of the synaptic weights according to their pre- and post-synaptic activity, which in turn changes the neuronal activity. In this paper, we extend previous studies of input selectivity induced by (STDP) for single neurons to the biologically interesting ...

journal_title：Biological cybernetics

authors： Gilson M,Burkitt AN,Grayden DB,Thomas DA,van Hemmen JL

更新日期：2009-08-01 00:00:00

abstract：:Sixty subjects were tested to assign orientation to ten dot patterns differing in their overall form and the number of dots in the pattern. The patterns were presented in four different positions in the visual field and their orientation was estimated in two ways. It was demonstrated that the assignment of orientation...

journal_title：Biological cybernetics

authors： Yakimoff N

更新日期：1981-01-01 00:00:00

abstract：:Diffusion processes have been extensively used to describe membrane potential behavior. In this approach the interspike interval has a theoretical counterpart in the first-passage-time of the diffusion model employed. Since the mathematical complexity of the first-passage-time problem increases with attempts to make t...

journal_title：Biological cybernetics

authors： Lánský P,Sacerdote L,Tomassetti F

更新日期：1995-10-01 00:00:00

abstract：:The assessment of the variability of neuronal spike timing is fundamental to gain understanding of latency coding. Based on recent mathematical results, we investigate theoretically the impact of channel noise on latency variability. For large numbers of ion channels, we derive the asymptotic distribution of latency, ...

journal_title：Biological cybernetics

authors： Wainrib G,Thieullen M,Pakdaman K

更新日期：2010-07-01 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

authors： Inbar GF,Eden G

更新日期：1983-01-01 00:00:00

abstract：:Neuronal excitability under stimuli with a complex time course is investigated on the basis of the numerical solution of the Hodgkin-Huxley equations. Each stimulus is composed of 100-1000 unitary excitatory postsynaptic potentials (uEPSP) that start randomly within a definite time window. Probability of initiating a ...

journal_title：Biological cybernetics

authors： Vidybida AK

更新日期：1996-06-01 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

authors： Kulvicius T,Kolodziejski C,Tamosiunaite M,Porr B,Wörgötter F

更新日期：2010-10-01 00:00:00

abstract：:With regular trains of stimuli at a high frequency, the contribution of each stimulus to the force generated over time declines from the second to about the tenth stimulus, but then begins to increase again. This late increase is referred to as tetanic potentiation in analogy with the post-tetanic potentiation of the ...

journal_title：Biological cybernetics

authors： Parmiggiani F,Stein RB,Rolf R

更新日期：1982-01-01 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

authors： Colas F,Flacher F,Tanner T,Bessière P,Girard B

更新日期：2009-03-01 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