axon_thresholds.mat

Axon thresholds data file

thresholds~/stimulus (name)/type-fascicle%d.mat contains the data for response thresholds to extracellular stimulation for the given axon type (Gaines, Sundt, or MRG; see models.axon_model), as computed by models.axon_thresholds. This data is used by plots.view_thresholds.

The variables saved in each of these thresholds.mat file are:

Variable	Type	Description
threshold	double, nAxons x 1	axon stimulation thresholds, µA
diameter	double, nAxons x 1	fibre (outer) diameters for each simulated axon
spiketimes	cell array of double {nAxons x 1}	When was the first supra-threshold spike initiated, relative to the onset of stimulation?
velocity	double, nAxons x 1	axon conduction velocity, m/s
g_ratio	double, nAxons x 1	axon g-ratio (myelinated models only)
axon_index	integer, nAxons x 1	Indices into the axon population for the axons corresponding to this class and fascicle
example_data	struct array, 1 x nuExamples	array of example output structures from models.axon_model. The exact fieldnames in this structure will depend on whether -volt, -spike, or -current was passed to models.axon_model via models.axon_thresholds. This structure might have less than nExamples entries if the same axon was selected as an example more than once, see example_index. Indices correspond to unique(example_index).
example_index	int array, 1 x nExamples	array of axon indices for selected examples.
selected_examples	cell array of char, {1 x nExamples}	labels for selected examples, indicating why that example was selected (usually the example closest to some quantile point of a given variable)
pop	struct	Data about this axon population, see axons.mat for details about the pop structure. Each population which uses the model Type is grouped together. In addition, some extra data columns are defined:
pop.population_id	integer (nAxons x 1)	To which original population does each axon in this pop structure belong?
pop.source_total	integer (nMerged x nFascicles)	For each population and fascicle, how many axons were in the source population before downsampling?
units	struct	information about the units for each variable.
notes	cell array of char	information about the execution environment and input files to models.axon_thresholds. Display using cellfun(@disp,notes).