From faf61a780e9c9384408b26e760f2d6922c143087 Mon Sep 17 00:00:00 2001
From: Aniket Singh Yadav <singhyadavaniket43@gmail.com>
Date: Thu, 26 Feb 2026 06:00:06 +0000
Subject: [PATCH 1/2] ENH: Add ICA sources plot to Report.add_ica

---
 mne/report/report.py            | 44 +++++++++++++++++++++++++++++++++
 mne/report/tests/test_report.py | 32 ++++++++++++++++++++++++
 2 files changed, 76 insertions(+)

diff --git a/mne/report/report.py b/mne/report/report.py
index 071d15e3cee..2f6ef72b59a 100644
--- a/mne/report/report.py
+++ b/mne/report/report.py
@@ -2020,6 +2020,22 @@ def _add_ica_components(self, *, ica, picks, image_format, section, tags, replac
                 replace=replace,
             )
 
+    def _add_ica_sources(
+        self, *, ica, inst, picks, image_format, section, tags, replace
+    ):
+        with use_browser_backend("matplotlib"):
+            fig = ica.plot_sources(inst=inst, picks=picks, show=False)
+        self._add_figure(
+            fig=fig,
+            title="Sources",
+            caption=None,
+            image_format=image_format,
+            tags=tags,
+            section=section,
+            replace=replace,
+            own_figure=True,
+        )
+
     def _add_ica(
         self,
         *,
@@ -2036,6 +2052,7 @@ def _add_ica(
         tags,
         n_jobs,
         replace,
+        plot_sources=False,
     ):
         if _path_like(ica):
             ica = read_ica(ica)
@@ -2166,6 +2183,25 @@ def _add_ica(
                 replace=replace,
             )
 
+        # Sources plot
+        if plot_sources:
+            if inst is None:
+                warn(
+                    "Cannot plot ICA sources because inst=None. "
+                    "Please pass a Raw, Epochs, or Evoked instance to "
+                    "add_ica() to enable source plotting."
+                )
+            else:
+                self._add_ica_sources(
+                    ica=ica,
+                    inst=inst,
+                    picks=picks,
+                    image_format=image_format,
+                    section=section,
+                    tags=tags,
+                    replace=replace,
+                )
+
     @fill_doc
     def add_ica(
         self,
@@ -2181,6 +2217,7 @@ def add_ica(
         n_jobs=None,
         tags=("ica",),
         replace=False,
+        plot_sources=False,
     ):
         """Add (a fitted) `~mne.preprocessing.ICA` to the report.
 
@@ -2207,6 +2244,12 @@ def add_ica(
         %(n_jobs)s
         %(tags_report)s
         %(replace_report)s
+        plot_sources : bool
+            Whether to add a plot of the ICA source time-courses using
+            :meth:`mne.preprocessing.ICA.plot_sources`. Requires ``inst``
+            to be provided. Defaults to ``False``.
+
+            .. versionadded:: 1.9
 
         Notes
         -----
@@ -2227,6 +2270,7 @@ def add_ica(
             section=title,
             n_jobs=n_jobs,
             replace=replace,
+            plot_sources=plot_sources,
         )
 
     def remove(self, *, title=None, tags=None, remove_all=False):
diff --git a/mne/report/tests/test_report.py b/mne/report/tests/test_report.py
index 5fa47d63914..6492283fdcc 100644
--- a/mne/report/tests/test_report.py
+++ b/mne/report/tests/test_report.py
@@ -1042,6 +1042,38 @@ def test_manual_report_2d(tmp_path, invisible_fig):
         picks=[0],
     )
     r.add_ica(ica=ica, title="my ica with picks=None", inst=epochs_baseline, picks=None)
+
+    # plot_sources=True with a valid inst should add a "Sources" subsection
+    r.add_ica(
+        ica=ica,
+        title="my ica with sources raw",
+        inst=raw,
+        picks=[0],
+        plot_sources=True,
+    )
+    assert "Sources" in r._content[-1].html
+
+    # plot_sources=True with an epochs inst should also work
+    r.add_ica(
+        ica=ica,
+        title="my ica with sources epochs",
+        inst=epochs_baseline,
+        picks=[0],
+        plot_sources=True,
+    )
+    assert "Sources" in r._content[-1].html
+
+    # plot_sources=True with inst=None should warn and not raise
+    with pytest.warns(
+        RuntimeWarning, match="Cannot plot ICA sources because inst=None"
+    ):
+        r.add_ica(
+            ica=ica,
+            title="my ica sources no inst",
+            inst=None,
+            plot_sources=True,
+        )
+
     r.add_covariance(cov=cov, info=raw_fname, title="my cov")
     r.add_forward(
         forward=fwd_fname,

From 37f1afe17cb3826d9cb0ba7edaf467c06c1fbb61 Mon Sep 17 00:00:00 2001
From: Aniket Singh Yadav <singhyadavaniket43@gmail.com>
Date: Fri, 27 Feb 2026 03:50:42 +0000
Subject: [PATCH 2/2] add changelog entry

---
 doc/changes/dev/13697.newfeature.rst | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 doc/changes/dev/13697.newfeature.rst

diff --git a/doc/changes/dev/13697.newfeature.rst b/doc/changes/dev/13697.newfeature.rst
new file mode 100644
index 00000000000..2a902531d35
--- /dev/null
+++ b/doc/changes/dev/13697.newfeature.rst
@@ -0,0 +1 @@
+Add ICA source timecourse plots to :func:`mne.Report.add_ica`, by `Aniket Singh Yadav`_.
\ No newline at end of file