Abstract:
:We have developed compact analog integrated circuits that simulate two synaptic excitatory conductances. A four-transistor circuit captures the dynamics of an excitatory postsynaptic current caused by a real AMPA conductance. A six-transistor circuit simulates the effects of a real voltage-dependent NMDA conductance. The postsynaptic current dynamics are modeled by a current mirror integrator with adjustable gain. The voltage dependence of the silicon NMDA conductance is realized by a differential pair. We show the operation of these silicon synaptic conductances and their integration with the silicon neuron (Mahowald and Douglas, 1991).
journal_name
J Comput Neuroscijournal_title
Journal of computational neuroscienceauthors
Rasche C,Douglas RJdoi
10.1023/a:1008963426194subject
Has Abstractpub_date
1999-07-01 00:00:00pages
33-9issue
1eissn
0929-5313issn
1573-6873journal_volume
7pub_type
杂志文章abstract::We have presented a new generation mechanism of slow spiking or repetitive discharges with extraordinarily long inter-spike intervals using the modified Hodgkin-Huxley equations (Doi and Kumagai, 2001). This generation process of slow firing is completely different from that of the well-known potassium A-current in th...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-005-2895-1
更新日期:2005-12-01 00:00:00
abstract::The timing of transmitter release from nerve endings is considered nowadays as one of the factors determining the plasticity and efficacy of synaptic transmission. In the neuromuscular junction, the moments of release of individual acetylcholine quanta are related to the synaptic delays of uniquantal endplate currents...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-015-0567-3
更新日期:2015-10-01 00:00:00
abstract::A neuron's firing correlates are defined as the features of the external world to which its activity is correlated. In many parts of the brain, neurons have quite simple such firing correlates. A striking example are grid cells in the rodent medial entorhinal cortex: their activity correlates with the animal's positio...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-019-00722-8
更新日期:2019-08-01 00:00:00
abstract::Wider dissemination and testing of computational models are crucial to the field of computational neuroscience. Databases are being developed to meet this need. ModelDB is a web-accessible database for convenient entry, retrieval, and running of published models on different platforms. This article provides a guide to...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1023/B:JCNS.0000023869.22017.2e
更新日期:2004-07-01 00:00:00
abstract::The precise mapping of how complex patterns of synaptic inputs are integrated into specific patterns of spiking output is an essential step in the characterization of the cellular basis of network dynamics and function. Relative to other principal neurons of the hippocampus, the electrophysiology of CA1 pyramidal cell...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-006-8797-z
更新日期:2006-10-01 00:00:00
abstract::Replicability and reproducibility of computational models has been somewhat understudied by "the replication movement." In this paper, we draw on methodological studies into the replicability of psychological experiments and on the mechanistic account of explanation to analyze the functions of model replications and m...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-018-0702-z
更新日期:2018-12-01 00:00:00
abstract::The resistive or non-resistive nature of the extracellular space in the brain is still debated, and is an important issue for correctly modeling extracellular potentials. Here, we first show theoretically that if the medium is resistive, the frequency scaling should be the same for electroencephalogram (EEG) and magne...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-010-0252-5
更新日期:2010-06-17 00:00:00
abstract::We develop a new computationally efficient approach for the analysis of complex large-scale neurobiological networks. Its key element is the use of a new phenomenological model of a neuron capable of replicating important spike pattern characteristics and designed in the form of a system of difference equations (a map...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1023/B:JCNS.0000037683.55688.7e
更新日期:2004-09-01 00:00:00
abstract::Epilepsy is one of the most common neurological disorders and is characterized by recurrent seizures. We use theoretical neuroscience tools to study brain dynamics during seizures. We derive and simulate a computational model of a network of hippocampal neuronal populations. Each population within the network is based...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-017-0636-x
更新日期:2017-04-01 00:00:00
abstract::Deep brain stimulation (DBS) of the subthlamic nucleus (STN) represents an effective treatment for medically refractory Parkinson's disease; however, understanding of its effects on basal ganglia network activity remains limited. We constructed a computational model of the subthalamopallidal network, trained it to fit...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-010-0225-8
更新日期:2010-06-01 00:00:00
abstract::A Web-based simulation system of the spinal cord circuitry responsible for muscle control is described. The simulator employs two-compartment motoneuron models for S, FR and FF types, with synaptic inputs acting through conductance variations. Four motoneuron pools with their associated interneurons are represented in...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-008-0092-8
更新日期:2008-12-01 00:00:00
abstract::The active dendritic conductances shape the input-output properties of many principal neurons in different brain regions, and the various ways in which they regulate neuronal excitability need to be investigated to better understand their functional consequences. Using a realistic model of a hippocampal CA1 pyramidal ...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1023/b:jcns.0000004837.81595.b0
更新日期:2004-01-01 00:00:00
abstract::In inactive stick insects, sensory information from the femoral chordotonal organ (fCO) about position and movement of the femur-tibia joint is transferred via local nonspiking interneurons onto extensor and flexor tibiae motoneurons. Information is processed by the interaction of antagonistic parallel pathways at two...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/BF00161131
更新日期:1996-09-01 00:00:00
abstract::Information transfer may not be limited only to synapses. Therefore, the processes and dynamics of biological neuron-astrocyte coupling and intercellular interaction within this domain are worth investigating. Existing models of tripartite synapse consider an astrocyte as a point process. Here, we extended the tripart...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-019-00734-4
更新日期:2020-02-01 00:00:00
abstract::Networks of hippocampal interneurons, with pyramidal neurons pharmacologically disconnected, can generate gamma-frequency (20 Hz and above) oscillations. Experiments and models have shown how the network frequency depends on excitation of the interneurons, and on the parameters of GABAA-mediated IPSCs between the inte...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1023/a:1008839312043
更新日期:1997-04-01 00:00:00
abstract::Motoneuron responses were elicited by global visual motion and stepwise displacements of an illuminated stripe. Stimulus protocols were identical to those used in previous behavioral studies of compensatory eyestalk reflexes. The firing rates and directional selectivity of the motoneuron responses were measured with r...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1023/a:1025873027017
更新日期:2003-09-01 00:00:00
abstract::During neural development sensory stimulation induces long-term changes in the receptive field of the neurons that encode the stimuli. The Bienenstock-Cooper-Munro (BCM) model was introduced to model and analyze this process computationally, and it remains one of the major models of unsupervised plasticity to this day...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-019-00715-7
更新日期:2019-04-01 00:00:00
abstract::In this paper, we investigate the dynamics of a neuron-glia cell system and the underlying mechanism for the occurrence of seizures. For our mathematical and numerical investigation of the cell model we will use bifurcation analysis and some computational methods. It turns out that an increase of the potassium concent...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-020-00746-5
更新日期:2020-05-01 00:00:00
abstract::We present a model for the use of open loop optogenetic control to inhibit epileptiform activity in a meso scale model of the human cortex. The meso scale cortical model first developed by Liley et al. (2001) is extended to two dimensions and the nature of the seizure waves is studied. We adapt to the meso scale a 4 s...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-013-0484-2
更新日期:2014-06-01 00:00:00
abstract::The goal of this paper is to design experiments that confirm the evidence of cognitive responses in functional near infrared spectroscopy and to establish relevant spectral subbands. Hemodynamic responses of brain during single-event trials in an odd-ball experiment are measured by functional near infrared spectroscop...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-005-5478-2
更新日期:2005-01-01 00:00:00
abstract::The background activity of a cortical neural network is modeled by a homogeneous integrate-and-fire network with unreliable inhibitory synapses. For the case of fast synapses, numerical and analytical calculations show that the network relaxes into a stationary state of high attention. The majority of the neurons has ...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-007-0049-3
更新日期:2008-02-01 00:00:00
abstract::The response of neurons to external stimuli greatly depends on the intrinsic dynamics of the network. Here, the intrinsic dynamics are modeled as coupling and the external input is modeled as shared and unshared noise. We assume the neurons are repetitively firing action potentials (i.e., neural oscillators), are weak...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-008-0120-8
更新日期:2009-06-01 00:00:00
abstract::In the mammalian retina, complementary ON and OFF visual streams are formed at the bipolar cell dendrites, then carried to amacrine and ganglion cells via nonlinear excitatory synapses from bipolar cells. Bipolar, amacrine and ganglion cells also receive a nonlinear inhibitory input from amacrine cells. The most commo...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-009-0170-6
更新日期:2009-12-01 00:00:00
abstract::The response of leaky integrate-and-fire neurons is analyzed for periodic inputs whose phases vary with their spatial location. The model gives the relationship between the spatial summation distance and the degree of phase locking of the output spikes (i.e., locking to the periodic stochastic inputs, measured by the ...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1023/a:1014994113776
更新日期:2002-01-01 00:00:00
abstract::The pathophysiology of auditory hallucination, a common symptom of schizophrenia, has yet been understood, but during auditory hallucination, primary auditory cortex (A1) shows paradoxical responses. When auditory stimuli are absent, A1 becomes hyperactive, while A1 responses to auditory stimuli are reduced. Such acti...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-017-0666-4
更新日期:2017-12-01 00:00:00
abstract::The voltage-gated currents in the fly lobula plate tangential cells were examined using the switched electrode voltage clamp technique. In CH cells, two currents were identified (Figs. 1, 2): a slow calcium inward current and a delayed rectifying, noninactivating potassium outward current. HS and VS cells appear to po...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1023/a:1008804117334
更新日期:1997-11-01 00:00:00
abstract::The primary sensory feature represented within the rodent barrel cortex is the velocity with which a whisker has been deflected. Whisker deflection velocity is encoded within the thalamus via population synchrony (higher deflection velocities entail greater synchrony among the corresponding thalamic population). Thala...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-014-0535-3
更新日期:2014-12-01 00:00:00
abstract::Nonlinear dynamics provides a complementary framework to control theory for the quantitative analysis of the oculomotor control system. This paper presents a number of findings relating to the aetiology and mechanics of the pathological ocular oscillation jerk congenital nystagmus (jerk CN). A range of time series ana...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-006-7816-4
更新日期:2006-10-01 00:00:00
abstract::We study the dynamics and bifurcations of noise-free neurons coupled by gap junctions and inhibitory synapses, using both delayed delta functions and alpha functions to model the latter. We focus on the case of two cells, as in the studies of Chow and Kopell (2000) and Lewis and Rinzel (2003), but also show that stabl...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1007/s10827-006-9676-3
更新日期:2007-02-01 00:00:00
abstract::According to a popular hypothesis, short-term memories are stored as persistent neural activity maintained by synaptic feedback loops. This hypothesis has been formulated mathematically in a number of recurrent network models. Here we study an abstraction of these models, a single neuron with a synapse onto itself, or...
journal_title:Journal of computational neuroscience
pub_type: 杂志文章
doi:10.1023/a:1008971908649
更新日期:2000-09-01 00:00:00