Easy fix with Sosulski2019 ;)

moabb/datasets/sosulski2019.py

@@ -7,6 +7,7 @@
 
 from moabb.datasets import download as dl
 from moabb.datasets.base import BaseDataset
+from moabb.datasets.utils import stim_channels_with_selected_ids
 
 
 SPOT_PILOT_P300_URL = (
@@ -95,12 +96,13 @@ def __init__(
         self.n_channels = 31
         self.use_soas_as_sessions = use_soas_as_sessions
         self.description_map = {"Stimulus/S 21": "Target", "Stimulus/S  1": "NonTarget"}
+        self.events = dict(Target=21, NonTarget=1)
         code = "Sosulski2019"
         interval = [-0.2, 1] if interval is None else interval
         super().__init__(
             subjects=list(range(1, 13 + 1)),
             sessions_per_subject=1,
-            events=dict(Target=21, NonTarget=1),
+            events=self.events,
             code=code,
             interval=interval,
             paradigm="p300",
@@ -133,7 +135,7 @@ def _get_single_run_data(self, file_path):
         if self.reject_non_iid:
             raw.set_annotations(raw.annotations[7:85])  # non-iid rejection
         raw.annotations.rename(self.description_map)
-        return raw
+        return stim_channels_with_selected_ids(raw, self.events)
 
     def _get_single_subject_data(self, subject):
         """Return data for a single subject."""