diff --git a/@xolotl/rheobase.m b/@xolotl/rheobase.m
index 3ae8d2e4..a03efa71 100644
--- a/@xolotl/rheobase.m
+++ b/@xolotl/rheobase.m
@@ -7,20 +7,17 @@
 % **Syntax**
 %
 % ```matlab
-% [I_ext, index, metrics] = rheobase(x)
-% [I_ext, index, metrics] = rheobase(x, 'PropertyName', PropertyValue, ...)
-% [I_ext, index, metrics] = rheobase(x, options)
+% I = x.rheobase
+% I = x.rheobase('PropertyName', PropertyValue, ...)
+% I = x.rheobase(options)
 % ```
 %
 % **Description**
 %
-% Finds the minimum injected current required to cause a xolotl model to spike.
-% The model is simulated with constant injected current determined by the `current_steps` option,
-% which is a vector of real numbers,
-% until the minimum firing rate is reached.
-% The output `I_ext` contains the current magnitude needed to cause the model to spike,
-% `index` contains the linear index into the `current_steps` vector.
-% `metrics` contains a struct of computed statistics for the resultant spike train.
+% Finds the minimum injected current required to cause a xolotl model to .
+% The model is simulated with increasing amounts of constant injected current until one spike is elicited.
+% This minimum amount of current is called the rheobase.
+% The output `I` contains the current magnitude needed to cause the model to spike,
 %
 % If called without arguments and one output, a struct
 % containing fields for all optional arguments, `options`,
@@ -33,12 +30,10 @@
 %
 % | Option Name | Default Value | Units |
 % | ----------- | ------------- | ----- |
-% | `current_steps` | 0:0.01:1 | nA |
-% | `debug` | false | |
-% | `MinFiringRate` | 1 | Hz |
-% | `sampling_rate` | 20 | 1/ms |
-% | `spike_threshold` | 0 | mV |
-% | `verbosity` | true | |
+% | `I_min` | -0.2 | nA |
+% | `I_max` | 4 | nA |
+% | `SpikeThreshold` | 0 | mV |
+% | `t_end` | 10e3 | ms |
 %
 %
 %
@@ -87,4 +82,4 @@
 end
 
 
-end
\ No newline at end of file
+end