Requirements: none Limitations: none noted This module creates an artificial synapse where the fixed conductance change is described by an alpha function. The fixed conductance waveform is pre-computed according to: (1) The current is computed according to Ohm’s Law: (2) This conductance is triggered by an event indicated by a value of [...]
Modules
May 13th, 2010
Noise Generator
Requirements: Generator class (included), GSL library Limitations: none noted This module continuously generates Gaussian white noise computed using the Box-Muller method. This module is already included in RTXI v1.3+. You may edit this source code (eg. adding additional noise types). Compiling and installing this module will then overwrite the bundled version of the noise [...]
May 13th, 2010
Generator Class
Requirements: GSL Limitations: none noted These files define a generator class that can be used to create continuous signal waveforms. They are easily extended to new signal types. For examples of their usage, see Noise Generator and Signal Generator.
April 27th, 2010
Spike-triggered Average
Requirements: Qwt, Spike Detector plugin, Plot helper classes (included), Boost libraries Limitations: none noted This module computes an event or spike-triggered average of any input signal. You specify a time window of interest around the spike. This screenshot was made using a neuron model to generate spikes and the SpikeDetect module to detect spikes. [...]
April 12th, 2010
Phase Response Curve
Requirements: none Limitations: none noted This module applies an alpha-shaped conductance to the cell at a fixed delay after 10 interspike intervals (ISI). It computes an intrinsic period P0 by averaging the most recent 5 of 10 ISIs. Thus, the value of P0 can change over time. The period after the perturbed period is [...]
April 10th, 2010
Helper classes for signal processing
Requirements: GSL, Qwt Limitations: This is the beginning of a signal processing library for RTXI. Currently, it includes classes for designing lowpass, highpass, bandpass, and bandstop FIR filters using the window method. Generic filter windows have also been implemented, including triangular (Bartlett), Hamming, Hann, Dolph-Chebyshev, and Kaiser windows. Examples of how to use this [...]
April 10th, 2010
FIR Filter Design (window method)
Requirements: GSL, Qwt, DSP helper files (included), Boost library Limitations: There is a limit to how high a filter order you can use. This module does not test if your filter order will break real-time. This module creates an in-line FIR filter that can be applied to any signal in RTXI. Given the desired [...]
March 11th, 2010
Istep
Requirements: none Limitations: none noted This plugin allows you to deliver a series of current step commands. Output Channels output(0) – “Iout” : Step current command in amperes. Connect to the amplifer external signal input. Parameters Period (s): period of step input Delay (s): delay between step commands Min Amp (pA): minimum amplitude Max [...]
February 22nd, 2010
DYNAMO models
Requirements: GMP library (included in Live CD) Limitations: none noted This is a collection of models built using the DYNAMO scripting language. See the DYNAMO tutorial for a quick introduction on how they work. These can be compiled using the DYNAMO Model Loader in RTXI. The result is a module based on the DefaultGUIModel [...]
February 20th, 2010
Custom plot classes
Requirements: Qwt Limitations: none noted This set of classes allows you to create custom plots with automatically scaling axes and rubber-band based zooming. There is a hierarchy of plot classes with additional features depending on your needs. The IncrementalPlot extends the BasicPlot with a growing data container for holding information about single data points. [...]
