class
Model based on Brette R and Gerstner W ( 2005 ) Adaptive Exponential Integrate-and-Fire Model as an Effective Description of Neuronal Activity.
class
Alpha synapse: rise time and decay time are both tau_syn.
class
Alpha current synapse: rise time and decay time are both **tau.**
\n
:param tau: Time course for rise and decay
:type tau: time
:param ibase: Baseline current increase after receiving a spike
:type ibase: current
class
Alpha synapse: rise time and decay time are both tau_syn.
class
Ohmic synapse model where rise time and decay time are both **tau.** Max conductance reached during this time ( assuming zero conductance before ) is **gbase** * **weight.**
\n
:param tau: Time course of rise/decay
:type tau: time
:param gbase: Baseline conductance, generally the maximum conductance following a single spike
:type gbase: conductance
:param erev: Reversal potential of the synapse
:type erev: voltage
class
Base type of any cell ( e.
class
Any cell with a membrane potential **v** with voltage units and a membrane capacitance **C.** Also defines exposed value **iSyn** for current due to external synapses and **iMemb** for total transmembrane current ( usually channel currents plus **iSyn** )
\n
:param C: Total capacitance of the cell membrane
:type C: capacitance
class
Synapse model which exposes a conductance **g** in addition to producing a current.
class
Synapse model suited for a sum of two expTwoSynapses which exposes a conductance **g** in addition to producing a current.
class
Synapse model which produces a synaptic current.
class
Base type of any PyNN standard cell model.
class
Base type of any PyNN standard integrate and fire model
\n
:param tau_refrac:
:type tau_refrac: none
:param v_thresh:
:type v_thresh: none
:param tau_m:
:type tau_m: none
:param v_rest:
:type v_rest: none
:param v_reset:
:type v_reset: none
:param cm:
:type cm: none
:param i_offset:
:type i_offset: none
:param tau_syn_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_E: none
:param tau_syn_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_I: none
:param v_init:
:type v_init: none
class
Base type of conductance based PyNN IaF cell models
\n
:param e_rev_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_E: none
:param e_rev_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_I: none
:param tau_refrac:
:type tau_refrac: none
:param v_thresh:
:type v_thresh: none
:param tau_m:
:type tau_m: none
:param v_rest:
:type v_rest: none
:param v_reset:
:type v_reset: none
:param cm:
:type cm: none
:param i_offset:
:type i_offset: none
:param tau_syn_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_E: none
:param tau_syn_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_I: none
:param v_init:
:type v_init: none
class
Base type for all PyNN synapses.
class
Base type for all synapses, i.
class
Base type for synapses with a dependence on membrane potential
class
The biophysical properties of the **cell** , including the **membraneProperties** and the **intracellularProperties**
class
The biophysical properties of the **cell** , including the **membraneProperties2CaPools** and the **intracellularProperties2CaPools** for a cell with two Ca pools
class
Biexponential synapse that allows for optional block and plasticity mechanisms, which can be expressed as child elements.
class
Cell with **segment** s specified in a **morphology** element along with details on its **biophysicalProperties** .
class
Variant of cell with two independent Ca2+ pools.
class
Generates a current which is the sum of all its child **basePointCurrent** element, e.
class
Generates a current which is the sum of all its child **basePointCurrentDL** elements, e.
class
Java class for ConcentrationModel_D complex type.
class
Model of an intracellular buffering mechanism for **ion** ( currently hard Coded to be calcium, due to requirement for **iCa** ) which has a baseline level **restingConc** and tends to this value with time course **decayConstant.** The ion is assumed to occupy a shell inside the membrane of thickness **shellThickness.**
\n
:param restingConc:
:type restingConc: concentration
:param decayConstant:
:type decayConstant: time
:param shellThickness:
:type shellThickness: length
class
Synapse consisting of two independent synaptic mechanisms ( e.
class
Adaptive exponential integrate and fire neuron according to Brette R and Gerstner W ( 2005 ) with alpha-function-shaped post-synaptic conductance
\n
:param v_spike:
:type v_spike: none
:param delta_T:
:type delta_T: none
:param tau_w:
:type tau_w: none
:param a:
:type a: none
:param b:
:type b: none
:param e_rev_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_E: none
:param e_rev_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_I: none
:param tau_refrac:
:type tau_refrac: none
:param v_thresh:
:type v_thresh: none
:param tau_m:
:type tau_m: none
:param v_rest:
:type v_rest: none
:param v_reset:
:type v_reset: none
:param cm:
:type cm: none
:param i_offset:
:type i_offset: none
:param tau_syn_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_E: none
:param tau_syn_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_I: none
:param v_init:
:type v_init: none
class
Adaptive exponential integrate and fire neuron according to Brette R and Gerstner W ( 2005 ) with exponentially-decaying post-synaptic conductance
\n
:param v_spike:
:type v_spike: none
:param delta_T:
:type delta_T: none
:param tau_w:
:type tau_w: none
:param a:
:type a: none
:param b:
:type b: none
:param e_rev_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_E: none
:param e_rev_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_I: none
:param tau_refrac:
:type tau_refrac: none
:param v_thresh:
:type v_thresh: none
:param tau_m:
:type tau_m: none
:param v_rest:
:type v_rest: none
:param v_reset:
:type v_reset: none
:param cm:
:type cm: none
:param i_offset:
:type i_offset: none
:param tau_syn_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_E: none
:param tau_syn_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_I: none
:param v_init:
:type v_init: none
class
Conductance based synapse with instantaneous rise and single exponential decay ( with time constant tau_syn )
\n
:param e_rev:
:type e_rev: none
:param tau_syn:
:type tau_syn: none
class
Current based synapse with instantaneous rise and single exponential decay ( with time constant tau_syn )
\n
:param tau_syn:
:type tau_syn: none
class
Ohmic synapse model whose conductance rises instantaneously by ( **gbase** * **weight** ) on receiving an event, and which decays exponentially to zero with time course **tauDecay**
\n
:param tauDecay: Time course of decay
:type tauDecay: time
:param gbase: Baseline conductance, generally the maximum conductance following a single spike
:type gbase: conductance
:param erev: Reversal potential of the synapse
:type erev: voltage
class
Ohmic synapse similar to expTwoSynapse but consisting of two components that can differ in decay times and max conductances but share the same rise time.
class
Ohmic synapse model whose conductance waveform on receiving an event has a rise time of **tauRise** and a decay time of **tauDecay.** Max conductance reached during this time ( assuming zero conductance before ) is **gbase** * **weight.**
\n
:param tauRise:
:type tauRise: time
:param tauDecay:
:type tauDecay: time
:param gbase: Baseline conductance, generally the maximum conductance following a single spike
:type gbase: conductance
:param erev: Reversal potential of the synapse
:type erev: voltage
class
The Fitzhugh Nagumo model is a two-dimensional simplification of the Hodgkin-Huxley model of spike generation in squid giant axons.
class
Simple dimensionless model of spiking cell from FitzHugh and Nagumo.
class
Model of buffering of concentration of an ion ( currently hard coded to be calcium, due to requirement for **iCa** ) which has a baseline level **restingConc** and tends to this value with time course **decayConstant.** A fixed factor **rho** is used to scale the incoming current *independently of the size of the compartment* to produce a concentration change.
class
Gap junction/single electrical connection
\n
:param conductance:
:type conductance: conductance
class
class
Single-compartment Hodgkin-Huxley-type neuron with transient sodium and delayed-rectifier potassium currents using the ion channel models from Traub.
class
The Hindmarsh Rose model is a simplified point cell model which captures complex firing patterns of single neurons, such as periodic and chaotic bursting.
class
Integrate and fire cell with capacitance **C,** **leakConductance** and **leakReversal**
\n
:param leakConductance:
:type leakConductance: conductance
:param leakReversal:
:type leakReversal: voltage
:param thresh:
:type thresh: voltage
:param reset:
:type reset: voltage
:param C: Total capacitance of the cell membrane
:type C: capacitance
class
Integrate and fire cell with capacitance **C,** **leakConductance,** **leakReversal** and refractory period **refract**
\n
:param refract:
:type refract: time
:param leakConductance:
:type leakConductance: conductance
:param leakReversal:
:type leakReversal: voltage
:param thresh:
:type thresh: voltage
:param reset:
:type reset: voltage
:param C: Total capacitance of the cell membrane
:type C: capacitance
class
Integrate and fire cell which returns to its leak reversal potential of **leakReversal** with a time constant **tau**
\n
:param leakReversal:
:type leakReversal: voltage
:param tau:
:type tau: time
:param thresh: The membrane potential at which to emit a spiking event and reset voltage
:type thresh: voltage
:param reset: The value the membrane potential is reset to on spiking
:type reset: voltage
class
Integrate and fire cell which returns to its leak reversal potential of **leakReversal** with a time course **tau.** It has a refractory period of **refract** after spiking
\n
:param refract:
:type refract: time
:param leakReversal:
:type leakReversal: voltage
:param tau:
:type tau: time
:param thresh: The membrane potential at which to emit a spiking event and reset voltage
:type thresh: voltage
:param reset: The value the membrane potential is reset to on spiking
:type reset: voltage
class
Leaky integrate and fire model with fixed threshold and alpha-function-shaped post-synaptic conductance
\n
:param e_rev_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_E: none
:param e_rev_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_I: none
:param tau_refrac:
:type tau_refrac: none
:param v_thresh:
:type v_thresh: none
:param tau_m:
:type tau_m: none
:param v_rest:
:type v_rest: none
:param v_reset:
:type v_reset: none
:param cm:
:type cm: none
:param i_offset:
:type i_offset: none
:param tau_syn_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_E: none
:param tau_syn_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_I: none
:param v_init:
:type v_init: none
class
Leaky integrate and fire model with fixed threshold and exponentially-decaying post-synaptic conductance
\n
:param e_rev_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_E: none
:param e_rev_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type e_rev_I: none
:param tau_refrac:
:type tau_refrac: none
:param v_thresh:
:type v_thresh: none
:param tau_m:
:type tau_m: none
:param v_rest:
:type v_rest: none
:param v_reset:
:type v_reset: none
:param cm:
:type cm: none
:param i_offset:
:type i_offset: none
:param tau_syn_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_E: none
:param tau_syn_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_I: none
:param v_init:
:type v_init: none
class
Leaky integrate and fire model with fixed threshold and alpha-function-shaped post-synaptic current
\n
:param tau_refrac:
:type tau_refrac: none
:param v_thresh:
:type v_thresh: none
:param tau_m:
:type tau_m: none
:param v_rest:
:type v_rest: none
:param v_reset:
:type v_reset: none
:param cm:
:type cm: none
:param i_offset:
:type i_offset: none
:param tau_syn_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_E: none
:param tau_syn_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_I: none
:param v_init:
:type v_init: none
class
Leaky integrate and fire model with fixed threshold and decaying-exponential post-synaptic current
\n
:param tau_refrac:
:type tau_refrac: none
:param v_thresh:
:type v_thresh: none
:param tau_m:
:type tau_m: none
:param v_rest:
:type v_rest: none
:param v_reset:
:type v_reset: none
:param cm:
:type cm: none
:param i_offset:
:type i_offset: none
:param tau_syn_E: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_E: none
:param tau_syn_I: This parameter is never used in the NeuroML2 description of this cell! Any synapse producing a current can be placed on this cell
:type tau_syn_I: none
:param v_init:
:type v_init: none
class
Note **ionChannel** and **ionChannelHH** are currently functionally identical.
class
Note **ionChannel** and **ionChannelHH** are currently functionally identical.
class
A kinetic scheme based ion channel with multiple **gateKS** s, each of which consists of multiple **KSState** s and **KSTransition** s giving the rates of transition between them
\n
:param conductance:
:type conductance: conductance
class
Java class for IonChannelScalable complex type.
class
Same as **ionChannel** , but with a **vShift** parameter to change voltage activation of gates.
class
Cell based on the modified Izhikevich model in Izhikevich 2007, Dynamical systems in neuroscience, MIT Press
\n
:param v0: Initial membrane potential
:type v0: voltage
:param k:
:type k: conductance_per_voltage
:param vr: Resting membrane potential
:type vr: voltage
:param vt: Spike threshold
:type vt: voltage
:param vpeak: Peak action potential value
:type vpeak: voltage
:param a: Time scale of recovery variable u
:type a: per_time
:param b: Sensitivity of recovery variable u to subthreshold fluctuations of membrane potential v
:type b: conductance
:param c: After-spike reset value of v
:type c: voltage
:param d: After-spike increase to u
:type d: current
:param C: Total capacitance of the cell membrane
:type C: capacitance
class
Cell based on the 2003 model of Izhikevich, see http://izhikevich.org/publications/spikes.htm
\n
:param v0: Initial membrane potential
:type v0: voltage
:param a: Time scale of the recovery variable U
:type a: none
:param b: Sensitivity of U to the subthreshold fluctuations of the membrane potential V
:type b: none
:param c: After-spike reset value of V
:type c: none
:param d: After-spike increase to U
:type d: none
:param thresh: Spike threshold
:type thresh: voltage
class
Behaves just like a one way gap junction.
class
The collection of **segment** s which specify the 3D structure of the cell, along with a number of **segmentGroup** s
class
Network containing: **population** s ( potentially of type **populationList** , and so specifying a list of cell **location** s ); **projection** s ( with lists of **connection** s ) and/or **explicitConnection** s; and **inputList** s ( with lists of **input** s ) and/or **explicitInput** s.
class
Java class for NeuroMLDocument complex type.
class
Reduced CA3 cell model from Pinsky, P.
class
Poisson spike generator firing at **averageRate,** which is connected to single **synapse** that is triggered every time a spike is generated, producing an input current.
class
A population of components, with just one parameter for the **size,** i.
class
Generates a constant current pulse of a certain **amplitude** for a specified **duration** after a **delay.** Scaled by **weight,** if set
\n
:param delay: Delay before change in current.
class
Dimensionless equivalent of **pulseGenerator** .
class
Generates a ramping current after a time **delay,** for a fixed **duration.** During this time the current steadily changes from **startAmplitude** to **finishAmplitude.** Scaled by **weight,** if set
\n
:param delay: Delay before change in current.
class
Dimensionless equivalent of **rampGenerator** .
class
Dummy synapse which emits no current.
class
Generates a sinusoidally varying current after a time **delay,** for a fixed **duration.** The **period** and maximum **amplitude** of the current can be set as well as the **phase** at which to start.
class
Dimensionless equivalent of **sineGenerator** .
class
Set of spike ComponentTypes, each emitting one spike at a certain time.
class
Simple generator of spikes at a regular interval set by **period**
\n
:param period: Time between spikes.
class
Generator of spikes whose ISI is distributed according to an exponential PDF with scale: 1 / **averageRate**
\n
:param averageRate: The average rate at which spikes are emitted
:type averageRate: per_time
class
Generator of spikes with a random interspike interval of at least **minISI** and at most **maxISI**
\n
:param maxISI: Maximum interspike interval
:type maxISI: time
:param minISI: Minimum interspike interval
:type minISI: time
class
Generator of spikes whose ISI distribution is the maximum entropy distribution over [ **minimumISI,** +infinity ) with mean: 1 / **averageRate**
\n
:param minimumISI: The minimum interspike interval
:type minimumISI: time
:param averageRate: The average rate at which spikes are emitted
:type averageRate: per_time
class
Spike source, generating spikes according to a Poisson process.
class
Spike array connected to a single **synapse,** producing a current triggered by each **spike** in the array.
class
Poisson spike generator firing at **averageRate** after a **delay** and for a **duration,** connected to single **synapse** that is triggered every time a spike is generated, providing an input current.
class
class
Voltage clamp with 3 clamp levels.