firing_threshold_point_source

nrv.ui.firing_threshold_point_source(diameter, L, dist_elec, cath_time=0.1, model='MRG', amp_max=2000, amp_tol=1, dt=0.005, verbose=True, **kwargs)

Find the firing threshold with point source approximation using binary search.

Parameters:

• diameter (float) – axon diameter in um

• L (float) – axon length in um

• dist_elec (float) – y coordinate of the point source electrode in um

• cath_time (float) – cathodic pulse width in ms

• model (str) – Axon model

• amp_max (float) – Maximum tested blocking amplitude for the binary search in uA

• amp_tol (float) – Threshold tolerance in % for the binary search

• dt (float) – Set the dt to a specific value in ms

• verbose (bool) – set the verbosity of the search

• **kwargs – See below

• Arguments (Keyword) –

  materialstr

  material used to compute the extracellular field

  position_electfloat

  x location of the electrode, between 0 and 1

  z_electfloat

  z coordinate of the electrode

  amp_minfloat

  minimum amplitude for the binary search

  f_dlambdafloat

  To set the number of segment with the d_dlambda rule (Hz)

  t_simfloat

  Duration of the simulation in ms

  amp_tol_absfloat

  Specify an absolute amplitude tolerance for the binary search in uA

  anod_firstbool

  Set the anodic phase before the cathodic phase

  t_interfloat

  Specify the interphase delay in ms

  cath_an_ratio: float

  Specify the cathodic/anodic ratio

  dtfloat

  Set the dt to a specific value in ms

  cath_an_ratiofloat

  Set the tolorance for dt in %

  nsegint

  Set the number of segment for the axon

  amp_tol_absfloat

  Set the absolute tolerance for the binary search in uA.

  node_shiftfloat between -1 and 1

  Align electrode with Node of Ranvier. When Shift = 0, Electrode is aligned with node

  n_nodesinteger

  Specify the number of Node of Ranvier for myelinated models. Overwrite L when specified.

Returns:

threshold – estimated firing threshold in uA

Return type:

float