diff --git a/cmlreaders/constants.py b/cmlreaders/constants.py
index c4b84e3..3736269 100644
--- a/cmlreaders/constants.py
+++ b/cmlreaders/constants.py
@@ -100,7 +100,8 @@ rhino_paths = {
         'protocols/{protocol}/subjects/{subject}/experiments/{experiment}/sessions/{session}/behavioral/current_processed/ps4_events.json'
     ],
     'sources': [
-        'protocols/{protocol}/subjects/{subject}/experiments/{experiment}/sessions/{session}/ephys/current_processed/sources.json'
+        "protocols/{protocol}/subjects/{subject}/experiments/{experiment}/sessions/{session}/ephys/current_processed/sources.json",
+        "data/eeg/{subject}/eeg.noreref/params.txt",
     ],
 
     # Processed EEG data basename
diff --git a/cmlreaders/readers/readers.py b/cmlreaders/readers/readers.py
index fadd626..ac415ba 100644
--- a/cmlreaders/readers/readers.py
+++ b/cmlreaders/readers/readers.py
@@ -131,6 +131,10 @@ class EventReader(BaseCMLReader):
         if self.session is not None:
             df = df[df["session"] == self.session]
 
+        # ensure we have an experiment column
+        if "experiment" not in df:
+            df.loc[:, "experiment"] = self.experiment
+
         return df
 
     def as_dataframe(self):

Error attempting to load pyFR eeg
I can load pyFR events, but I receive an error when attempting to load eeg:

```
reader = CMLReader("TJ039", experiment="pyFR", session=0)
events = reader.load("events")
word = events[events.type=='WORD']
eeg = reader.load_eeg(events=word, rel_start=-100, rel_stop=100)

...
KeyError: 'experiment'
```
Adding an `experiment` column to the DF then yields a `FileNotFoundError`.


diff --git a/cmlreaders/test/test_eeg.py b/cmlreaders/test/test_eeg.py
index acfd8fd..1e2e02e 100644
--- a/cmlreaders/test/test_eeg.py
+++ b/cmlreaders/test/test_eeg.py
@@ -225,13 +225,13 @@ class TestFileReaders:
 
 @pytest.mark.rhino
 class TestEEGReader:
-    # FIXME: add LTP, pyFR cases
-    @pytest.mark.parametrize("subject,index,channel", [
-        ("R1298E", 87, "CH88"),  # Split EEG
-        ("R1387E", 13, "CH14"),  # Ramulator HDF5
+    @pytest.mark.parametrize("subject,experiment,index,channel", [
+        ("R1298E", "FR1", 87, "CH88"),  # Split EEG
+        ("R1387E", "FR1", 13, "CH14"),  # Ramulator HDF5
+        ("TJ039", "pyFR", 14, "CH15"),  # pyFR
     ])
-    def test_eeg_reader(self, subject, index, channel, rhino_root):
-        reader = CMLReader(subject=subject, experiment='FR1', session=0,
+    def test_eeg_reader(self, subject, experiment, index, channel, rhino_root):
+        reader = CMLReader(subject=subject, experiment=experiment, session=0,
                            rootdir=rhino_root)
         events = reader.load("events")
         events = events[events["type"] == "WORD"].iloc[:2]
diff --git a/cmlreaders/test/test_readers.py b/cmlreaders/test/test_readers.py
index e95211d..e785219 100644
--- a/cmlreaders/test/test_readers.py
+++ b/cmlreaders/test/test_readers.py
@@ -221,6 +221,7 @@ class TestEventReader:
         path = datafile(filename)
         df = EventReader.fromfile(path)
         assert df.columns[0] == "eegoffset"
+        assert "experiment" in df.columns
         assert len(df)
 
 

pip install -e .[dev]
parse_log_pytest
requirements.txt
pytest pytest-cov
apt-get update apt-get install -y gcc
3.6
requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
alabaster==0.7.13
async-generator==1.10
attrs==22.2.0
Babel==2.11.0
bleach==4.1.0
cached-property==1.5.2
certifi==2021.5.30
charset-normalizer==2.0.12
-e git+https://github.com/pennmem/cmlreaders.git@2ffd443b75a0095a5c1edaaadf6e6e764c0e8a78#egg=cmlreaders
codecov==2.1.13
coverage==6.2
cycler==0.11.0
decorator==5.1.1
defusedxml==0.7.1
docutils==0.18.1
entrypoints==0.4
flake8==3.9.2
h5py==3.1.0
idna==3.10
imagesize==1.4.1
importlib-metadata==4.8.3
iniconfig==1.1.1
ipython-genutils==0.2.0
Jinja2==3.0.3
jsonschema==3.2.0
jupyter-client==7.1.2
jupyter-core==4.9.2
jupyterlab-pygments==0.1.2
kiwisolver==1.3.1
MarkupSafe==2.0.1
matplotlib==3.3.4
mccabe==0.6.1
mistune==0.8.4
mne==0.23.4
nbclient==0.5.9
nbconvert==6.0.7
nbformat==5.1.3
nbsphinx==0.8.8
nest-asyncio==1.6.0
numpy==1.19.5
packaging==21.3
pandas==1.1.5
pandocfilters==1.5.1
Pillow==8.4.0
pluggy==1.0.0
py==1.11.0
pycodestyle==2.7.0
pyflakes==2.3.1
Pygments==2.14.0
pyparsing==3.1.4
pyrsistent==0.18.0
pytest==7.0.1
pytest-cov==4.0.0
python-dateutil==2.9.0.post0
pytz==2025.2
pyzmq==25.1.2
requests==2.27.1
scipy==1.5.4
six==1.17.0
snowballstemmer==2.2.0
Sphinx==5.3.0
sphinx-rtd-theme==2.0.0
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-jquery==4.1
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
testpath==0.6.0
tomli==1.2.3
tornado==6.1
traitlets==4.3.3
typing_extensions==4.1.1
urllib3==1.26.20
webencodings==0.5.1
zipp==3.6.0

name: cmlreaders
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2021.5.30=py36h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.3=he6710b0_2
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=21.2.2=py36h06a4308_0
  - python=3.6.13=h12debd9_1
  - readline=8.2=h5eee18b_0
  - setuptools=58.0.4=py36h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.37.1=pyhd3eb1b0_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - alabaster==0.7.13
      - async-generator==1.10
      - attrs==22.2.0
      - babel==2.11.0
      - bleach==4.1.0
      - cached-property==1.5.2
      - charset-normalizer==2.0.12
      - codecov==2.1.13
      - coverage==6.2
      - cycler==0.11.0
      - decorator==5.1.1
      - defusedxml==0.7.1
      - docutils==0.18.1
      - entrypoints==0.4
      - flake8==3.9.2
      - h5py==3.1.0
      - idna==3.10
      - imagesize==1.4.1
      - importlib-metadata==4.8.3
      - iniconfig==1.1.1
      - ipython-genutils==0.2.0
      - jinja2==3.0.3
      - jsonschema==3.2.0
      - jupyter-client==7.1.2
      - jupyter-core==4.9.2
      - jupyterlab-pygments==0.1.2
      - kiwisolver==1.3.1
      - markupsafe==2.0.1
      - matplotlib==3.3.4
      - mccabe==0.6.1
      - mistune==0.8.4
      - mne==0.23.4
      - nbclient==0.5.9
      - nbconvert==6.0.7
      - nbformat==5.1.3
      - nbsphinx==0.8.8
      - nest-asyncio==1.6.0
      - numpy==1.19.5
      - packaging==21.3
      - pandas==1.1.5
      - pandocfilters==1.5.1
      - pillow==8.4.0
      - pluggy==1.0.0
      - py==1.11.0
      - pycodestyle==2.7.0
      - pyflakes==2.3.1
      - pygments==2.14.0
      - pyparsing==3.1.4
      - pyrsistent==0.18.0
      - pytest==7.0.1
      - pytest-cov==4.0.0
      - python-dateutil==2.9.0.post0
      - pytz==2025.2
      - pyzmq==25.1.2
      - requests==2.27.1
      - scipy==1.5.4
      - six==1.17.0
      - snowballstemmer==2.2.0
      - sphinx==5.3.0
      - sphinx-rtd-theme==2.0.0
      - sphinxcontrib-applehelp==1.0.2
      - sphinxcontrib-devhelp==1.0.2
      - sphinxcontrib-htmlhelp==2.0.0
      - sphinxcontrib-jquery==4.1
      - sphinxcontrib-jsmath==1.0.1
      - sphinxcontrib-qthelp==1.0.3
      - sphinxcontrib-serializinghtml==1.1.5
      - testpath==0.6.0
      - tomli==1.2.3
      - tornado==6.1
      - traitlets==4.3.3
      - typing-extensions==4.1.1
      - urllib3==1.26.20
      - webencodings==0.5.1
      - zipp==3.6.0
prefix: /opt/conda/envs/cmlreaders

cmlreaders/test/test_readers.py::TestEventReader::test_load_matlab[all_events] cmlreaders/test/test_readers.py::TestEventReader::test_load_matlab[task_events] cmlreaders/test/test_readers.py::TestEventReader::test_load_matlab[math_events]
cmlreaders/test/test_eeg.py::TestFileReaders::test_split_eeg_reader cmlreaders/test/test_eeg.py::TestFileReaders::test_split_eeg_reader_missing_contacts cmlreaders/test/test_eeg.py::TestFileReaders::test_ramulator_hdf5_reader_rhino[R1345D-FR1-0] cmlreaders/test/test_eeg.py::TestFileReaders::test_ramulator_hdf5_reader_rhino[R1363T-FR1-0] cmlreaders/test/test_eeg.py::TestFileReaders::test_ramulator_hdf5_reader_rhino[R1392N-PAL1-0] cmlreaders/test/test_eeg.py::TestFileReaders::test_ramulator_hdf5_reader cmlreaders/test/test_eeg.py::TestFileReaders::test_ramulator_hdf5_rereference cmlreaders/test/test_eeg.py::TestEEGReader::test_eeg_reader[R1298E-FR1-87-CH88] cmlreaders/test/test_eeg.py::TestEEGReader::test_eeg_reader[R1387E-FR1-13-CH14] cmlreaders/test/test_eeg.py::TestEEGReader::test_eeg_reader[TJ039-pyFR-14-CH15] cmlreaders/test/test_eeg.py::TestEEGReader::test_read_whole_session[R1161E] cmlreaders/test/test_eeg.py::TestEEGReader::test_eeg_reader_with_events[R1161E] cmlreaders/test/test_eeg.py::TestEEGReader::test_eeg_reader_with_events[R1387E] cmlreaders/test/test_eeg.py::TestEEGReader::test_rereference[R1384J-pairs-False-43-LS12-LS1] cmlreaders/test/test_eeg.py::TestEEGReader::test_rereference[R1111M-pairs-True-43-LPOG23-LPOG31] cmlreaders/test/test_eeg.py::TestEEGReader::test_rereference[R1111M-contacts-True-43-LPOG44] cmlreaders/test/test_eeg.py::TestEEGReader::test_rereference[R1286J-contacts-True-43-LJ16] cmlreaders/test/test_eeg.py::TestEEGReader::test_filter_channels[R1384J-ind.region-insula-10-200] cmlreaders/test/test_eeg.py::TestEEGReader::test_filter_channels[R1288P-ind.region-lateralorbitofrontal-5-200] cmlreaders/test/test_eeg.py::TestEEGReader::test_filter_channels[R1111M-ind.region-middletemporal-18-100] cmlreaders/test/test_eeg.py::TestRereference::test_rereference[RamulatorHDF5Reader-True] cmlreaders/test/test_eeg.py::TestRereference::test_rereference[RamulatorHDF5Reader-False] cmlreaders/test/test_eeg.py::TestLoadEEG::test_load_multisession[subjects0-experiments0] cmlreaders/test/test_eeg.py::TestLoadEEG::test_load_multisession[subjects1-experiments1] cmlreaders/test/test_eeg.py::TestLoadEEG::test_load_multisession[subjects2-experiments2] cmlreaders/test/test_eeg.py::TestLoadEEG::test_channel_discrepancies[R1387E-catFR5-0-120-125] cmlreaders/test/test_readers.py::TestMontageReader::test_load[R1405E-0-0-contacts] cmlreaders/test/test_readers.py::TestMontageReader::test_load[R1405E-0-0-pairs] cmlreaders/test/test_readers.py::TestMontageReader::test_load[R1006P-0-0-contacts] cmlreaders/test/test_readers.py::TestMontageReader::test_load[R1006P-0-0-pairs] cmlreaders/test/test_readers.py::TestMontageReader::test_load[R1006P-0-1-contacts] cmlreaders/test/test_readers.py::TestMontageReader::test_load[R1006P-0-1-pairs] cmlreaders/test/test_readers.py::TestElectrodeCategoriesReader::test_load[R1111M-lens0] cmlreaders/test/test_readers.py::TestElectrodeCategoriesReader::test_load[R1052E-lens1] cmlreaders/test/test_readers.py::TestClassifierContainerReader::test_as_methods[baseline_classifier-pyobject] cmlreaders/test/test_readers.py::TestClassifierContainerReader::test_as_methods[used_classifier-pyobject] cmlreaders/test/test_readers.py::TestClassifierContainerReader::test_to_methods[baseline_classifier-binary] cmlreaders/test/test_readers.py::TestClassifierContainerReader::test_to_methods[used_classifier-binary]
cmlreaders/test/test_eeg.py::TestEEGMetaReader::test_load[R1389J-sources.json-int16-1641165-1000] cmlreaders/test/test_eeg.py::TestEEGMetaReader::test_load[TJ001-TJ001_pyFR_params.txt-int16-None-400.0] cmlreaders/test/test_eeg.py::TestBaseEEGReader::test_include_contact[True] cmlreaders/test/test_eeg.py::TestBaseEEGReader::test_include_contact[False] cmlreaders/test/test_eeg.py::TestBaseEEGReader::test_scheme_type[/cmlreaders/cmlreaders/test/data/contacts.json-contacts] cmlreaders/test/test_eeg.py::TestBaseEEGReader::test_scheme_type[/cmlreaders/cmlreaders/test/data/pairs.json-pairs] cmlreaders/test/test_eeg.py::TestBaseEEGReader::test_scheme_type[-None] cmlreaders/test/test_eeg.py::TestFileReaders::test_npy_reader cmlreaders/test/test_eeg.py::TestEEGReader::test_eeg_absolute[TJ001-TJ001_events.mat-expected_basenames0] cmlreaders/test/test_eeg.py::TestEEGReader::test_eeg_absolute[R1389J-task_events.json-expected_basenames1] cmlreaders/test/test_eeg.py::TestRereference::test_rereference[SplitEEGReader-True] cmlreaders/test/test_eeg.py::TestLoadEEG::test_load_with_empty_events cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-voxel_coordinates-dataframe] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-voxel_coordinates-recarray] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-voxel_coordinates-dict] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-leads-dataframe] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-leads-recarray] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-leads-dict] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-classifier_excluded_leads-dataframe] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-classifier_excluded_leads-recarray] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-classifier_excluded_leads-dict] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-good_leads-dataframe] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-good_leads-recarray] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-good_leads-dict] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-jacksheet-dataframe] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-jacksheet-recarray] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-jacksheet-dict] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-area-dataframe] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-area-recarray] cmlreaders/test/test_readers.py::TestTextReader::test_as_methods[R1389J-0-area-dict] cmlreaders/test/test_readers.py::TestTextReader::test_read_jacksheet cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-voxel_coordinates-json] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-voxel_coordinates-csv] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-leads-json] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-leads-csv] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-classifier_excluded_leads-json] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-classifier_excluded_leads-csv] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-good_leads-json] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-good_leads-csv] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-jacksheet-json] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-jacksheet-csv] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-area-json] cmlreaders/test/test_readers.py::TestTextReader::test_to_methods[R1389J-0-area-csv] cmlreaders/test/test_readers.py::TestTextReader::test_failures cmlreaders/test/test_readers.py::TestRAMCSVReader::test_as_methods[R1409D-0-electrode_coordinates-dataframe] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_as_methods[R1409D-0-electrode_coordinates-recarray] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_as_methods[R1409D-0-electrode_coordinates-dict] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_as_methods[R1409D-0-prior_stim_results-dataframe] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_as_methods[R1409D-0-prior_stim_results-recarray] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_as_methods[R1409D-0-prior_stim_results-dict] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_as_methods[R1409D-0-target_selection_table-dataframe] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_as_methods[R1409D-0-target_selection_table-recarray] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_as_methods[R1409D-0-target_selection_table-dict] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_to_methods[R1409D-0-electrode_coordinates-json] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_to_methods[R1409D-0-electrode_coordinates-csv] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_to_methods[R1409D-0-prior_stim_results-json] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_to_methods[R1409D-0-prior_stim_results-csv] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_to_methods[R1409D-0-target_selection_table-json] cmlreaders/test/test_readers.py::TestRAMCSVReader::test_to_methods[R1409D-0-target_selection_table-csv] cmlreaders/test/test_readers.py::TestRamulatorEventLogReader::test_as_methods[R1409D-catFR1-1-event_log-dataframe] cmlreaders/test/test_readers.py::TestRamulatorEventLogReader::test_as_methods[R1409D-catFR1-1-event_log-recarray] cmlreaders/test/test_readers.py::TestRamulatorEventLogReader::test_as_methods[R1409D-catFR1-1-event_log-dict] cmlreaders/test/test_readers.py::TestRamulatorEventLogReader::test_to_methods[R1409D-catFR1-1-event_log-json] cmlreaders/test/test_readers.py::TestRamulatorEventLogReader::test_to_methods[R1409D-catFR1-1-event_log-csv] cmlreaders/test/test_readers.py::TestBaseJSONReader::test_load cmlreaders/test/test_readers.py::TestEventReader::test_load_json cmlreaders/test/test_readers.py::TestLocalizationReader::test_load cmlreaders/test/test_readers.py::test_fromfile[ElectrodeCategoriesReader-/cmlreaders/cmlreaders/test/data/electrode_categories.txt-dict] cmlreaders/test/test_readers.py::test_fromfile[MontageReader-/cmlreaders/cmlreaders/test/data/pairs.json-DataFrame] cmlreaders/test/test_readers.py::test_fromfile[MontageReader-/cmlreaders/cmlreaders/test/data/contacts.json-DataFrame] cmlreaders/test/test_readers.py::test_fromfile[RamulatorEventLogReader-/cmlreaders/cmlreaders/test/data/event_log.json-DataFrame]
cmlreaders/constants.py cmlreaders/readers/readers.py
cmlreaders/constants.py cmlreaders/readers/readers.py