diff --git a/docs/source/ngclearn.components.input_encoders.rst b/docs/source/ngclearn.components.input_encoders.rst
index 677f271f..e3222214 100644
--- a/docs/source/ngclearn.components.input_encoders.rst
+++ b/docs/source/ngclearn.components.input_encoders.rst
@@ -20,6 +20,14 @@ ngclearn.components.input\_encoders.ganglionCell module
    :undoc-members:
    :show-inheritance:
 
+ngclearn.components.input\_encoders.gridCell module
+---------------------------------------------------
+
+.. automodule:: ngclearn.components.input_encoders.gridCell
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 ngclearn.components.input\_encoders.latencyCell module
 ------------------------------------------------------
 
@@ -36,6 +44,14 @@ ngclearn.components.input\_encoders.phasorCell module
    :undoc-members:
    :show-inheritance:
 
+ngclearn.components.input\_encoders.placeCell module
+----------------------------------------------------
+
+.. automodule:: ngclearn.components.input_encoders.placeCell
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 ngclearn.components.input\_encoders.poissonCell module
 ------------------------------------------------------
 
@@ -44,6 +60,14 @@ ngclearn.components.input\_encoders.poissonCell module
    :undoc-members:
    :show-inheritance:
 
+ngclearn.components.input\_encoders.populationCoderCell module
+--------------------------------------------------------------
+
+.. automodule:: ngclearn.components.input_encoders.populationCoderCell
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 Module contents
 ---------------
 
diff --git a/docs/source/ngclearn.components.synapses.hebbian.rst b/docs/source/ngclearn.components.synapses.hebbian.rst
index ef76ced8..783be071 100644
--- a/docs/source/ngclearn.components.synapses.hebbian.rst
+++ b/docs/source/ngclearn.components.synapses.hebbian.rst
@@ -36,6 +36,14 @@ ngclearn.components.synapses.hebbian.expSTDPSynapse module
    :undoc-members:
    :show-inheritance:
 
+ngclearn.components.synapses.hebbian.gerstnerHebbianSynapse module
+------------------------------------------------------------------
+
+.. automodule:: ngclearn.components.synapses.hebbian.gerstnerHebbianSynapse
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 ngclearn.components.synapses.hebbian.hebbianSynapse module
 ----------------------------------------------------------
 
diff --git a/docs/source/ngclearn.utils.analysis.rst b/docs/source/ngclearn.utils.analysis.rst
index b6c12f1e..6ddcad42 100644
--- a/docs/source/ngclearn.utils.analysis.rst
+++ b/docs/source/ngclearn.utils.analysis.rst
@@ -12,6 +12,22 @@ ngclearn.utils.analysis.attentive\_probe module
    :undoc-members:
    :show-inheritance:
 
+ngclearn.utils.analysis.effective\_dim module
+---------------------------------------------
+
+.. automodule:: ngclearn.utils.analysis.effective_dim
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
+ngclearn.utils.analysis.kmeans\_probe module
+--------------------------------------------
+
+.. automodule:: ngclearn.utils.analysis.kmeans_probe
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 ngclearn.utils.analysis.knn\_probe module
 -----------------------------------------
 
diff --git a/docs/source/ngclearn.utils.filters.rst b/docs/source/ngclearn.utils.filters.rst
new file mode 100644
index 00000000..eb046e8a
--- /dev/null
+++ b/docs/source/ngclearn.utils.filters.rst
@@ -0,0 +1,29 @@
+ngclearn.utils.filters package
+==============================
+
+Submodules
+----------
+
+ngclearn.utils.filters.cortical\_gauss\_filter module
+-----------------------------------------------------
+
+.. automodule:: ngclearn.utils.filters.cortical_gauss_filter
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
+ngclearn.utils.filters.gauss\_filter module
+-------------------------------------------
+
+.. automodule:: ngclearn.utils.filters.gauss_filter
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
+Module contents
+---------------
+
+.. automodule:: ngclearn.utils.filters
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/source/ngclearn.utils.rst b/docs/source/ngclearn.utils.rst
index c674b875..d20fff9c 100644
--- a/docs/source/ngclearn.utils.rst
+++ b/docs/source/ngclearn.utils.rst
@@ -11,6 +11,7 @@ Subpackages
    ngclearn.utils.density
    ngclearn.utils.diffeq
    ngclearn.utils.feature_dictionaries
+   ngclearn.utils.filters
    ngclearn.utils.masks
    ngclearn.utils.optim
    ngclearn.utils.viz
diff --git a/docs/source/ngclearn.utils.viz.rst b/docs/source/ngclearn.utils.viz.rst
index 4c926118..b2b09d4f 100644
--- a/docs/source/ngclearn.utils.viz.rst
+++ b/docs/source/ngclearn.utils.viz.rst
@@ -4,6 +4,14 @@ ngclearn.utils.viz package
 Submodules
 ----------
 
+ngclearn.utils.viz.classification\_analysis module
+--------------------------------------------------
+
+.. automodule:: ngclearn.utils.viz.classification_analysis
+   :members:
+   :undoc-members:
+   :show-inheritance:
+
 ngclearn.utils.viz.compartment\_plot module
 -------------------------------------------
 
diff --git a/history.txt b/history.txt
index a8c1e724..8b42a782 100644
--- a/history.txt
+++ b/history.txt
@@ -101,4 +101,12 @@ History
   * some additional clean-up, including supported retinal ganglion encoder
   * fixed pkg-resource header (in both ngcsimlib and ngclearn) to account for newer python(s)
 
+  3.1.1
+  — — — — — — — — -
+  * Several patches and fixes (ensured certain error-neurons behaved as in v3.0.0)
+  * Update to docs/revisions
+  * Integration of filters/filtering functionality (including simple divisive normalization) in utilities
+  * Integration of several useful metrics (including for characterizing sparsity)
+  * Some additional clean-up throughout
+