improper metadata extraction for neural data types
this dataset (https://dandiarchive.org/dandiset/000220/draft) does not seem to correspond to any specific type. unlike other nwb dandisets where the assets summary does have information about approach/modality etc.,. this one doesn't.

make me think that we are either not covering something in the dandi-cli parser or the info was added in the inappropriate place.

> from @bendichter: regarding 
This dataset contains the neurodata type "CurrentClampSeries", which is correctly used to infer that the data is type "icephys". I'm not sure why that neurodata type itself isn't being pulled into the metadata automatically, but I guess it must be an error with the dandi-cli.

located the bug. PR forthcoming.
diff --git a/dandi/metadata.py b/dandi/metadata.py
index 8d4e5a1..8de19e8 100644
--- a/dandi/metadata.py
+++ b/dandi/metadata.py
@@ -776,6 +776,7 @@ def process_ndtypes(asset, nd_types):
     technique = set()
     variables = set()
     for val in nd_types:
+        val = val.split()[0]
         if val not in neurodata_typemap:
             continue
         if neurodata_typemap[val]["approach"]:
diff --git a/dandi/tests/test_metadata.py b/dandi/tests/test_metadata.py
index a0a6bce..dd741fd 100644
--- a/dandi/tests/test_metadata.py
+++ b/dandi/tests/test_metadata.py
@@ -21,6 +21,7 @@ from ..metadata import (
     metadata2asset,
     parse_age,
     parse_purlobourl,
+    process_ndtypes,
     timedelta2duration,
 )
 from ..pynwb_utils import metadata_nwb_subject_fields
@@ -359,3 +360,285 @@ def test_species():
         "schemaKey": "SpeciesType",
         "name": "Drosophila suzukii",
     }
+
+
+@pytest.mark.parametrize(
+    "ndtypes,asset_dict",
+    [
+        (
+            ["ElectricalSeries"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": [
+                    "multi electrode extracellular electrophysiology recording technique"
+                ],
+                "variableMeasured": ["ElectricalSeries"],
+            },
+        ),
+        (
+            ["SpikeEventSeries"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["spike sorting technique"],
+                "variableMeasured": ["SpikeEventSeries"],
+            },
+        ),
+        (
+            ["FeatureExtraction"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["spike sorting technique"],
+                "variableMeasured": ["FeatureExtraction"],
+            },
+        ),
+        (
+            ["LFP"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["signal filtering technique"],
+                "variableMeasured": ["LFP"],
+            },
+        ),
+        (
+            ["EventWaveform"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["spike sorting technique"],
+                "variableMeasured": ["EventWaveform"],
+            },
+        ),
+        (
+            ["EventDetection"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["spike sorting technique"],
+                "variableMeasured": ["EventDetection"],
+            },
+        ),
+        (
+            ["ElectrodeGroup"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["surgical technique"],
+                "variableMeasured": ["ElectrodeGroup"],
+            },
+        ),
+        (
+            ["PatchClampSeries"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["patch clamp technique"],
+                "variableMeasured": ["PatchClampSeries"],
+            },
+        ),
+        (
+            ["CurrentClampSeries"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["current clamp technique"],
+                "variableMeasured": ["CurrentClampSeries"],
+            },
+        ),
+        (
+            ["CurrentClampStimulusSeries"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["current clamp technique"],
+                "variableMeasured": ["CurrentClampStimulusSeries"],
+            },
+        ),
+        (
+            ["VoltageClampSeries"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["voltage clamp technique"],
+                "variableMeasured": ["VoltageClampSeries"],
+            },
+        ),
+        (
+            ["VoltageClampStimulusSeries"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["voltage clamp technique"],
+                "variableMeasured": ["VoltageClampStimulusSeries"],
+            },
+        ),
+        (
+            ["TwoPhotonSeries"],
+            {
+                "approach": ["microscopy approach; cell population imaging"],
+                "measurementTechnique": ["two-photon microscopy technique"],
+                "variableMeasured": ["TwoPhotonSeries"],
+            },
+        ),
+        (
+            ["OpticalChannel"],
+            {
+                "approach": ["microscopy approach; cell population imaging"],
+                "measurementTechnique": ["surgical technique"],
+                "variableMeasured": ["OpticalChannel"],
+            },
+        ),
+        (
+            ["ImagingPlane"],
+            {
+                "approach": ["microscopy approach; cell population imaging"],
+                "measurementTechnique": None,
+                "variableMeasured": ["ImagingPlane"],
+            },
+        ),
+        (
+            ["PlaneSegmentation"],
+            {
+                "approach": ["microscopy approach; cell population imaging"],
+                "measurementTechnique": None,
+                "variableMeasured": ["PlaneSegmentation"],
+            },
+        ),
+        (
+            ["Position"],
+            {
+                "approach": ["behavioral approach"],
+                "measurementTechnique": ["behavioral technique"],
+                "variableMeasured": ["Position"],
+            },
+        ),
+        (
+            ["SpatialSeries"],
+            {
+                "approach": ["behavioral approach"],
+                "measurementTechnique": ["behavioral technique"],
+                "variableMeasured": ["SpatialSeries"],
+            },
+        ),
+        (
+            ["BehavioralEpochs"],
+            {
+                "approach": ["behavioral approach"],
+                "measurementTechnique": ["behavioral technique"],
+                "variableMeasured": ["BehavioralEpochs"],
+            },
+        ),
+        (
+            ["BehavioralEvents"],
+            {
+                "approach": ["behavioral approach"],
+                "measurementTechnique": ["behavioral technique"],
+                "variableMeasured": ["BehavioralEvents"],
+            },
+        ),
+        (
+            ["BehavioralTimeSeries"],
+            {
+                "approach": ["behavioral approach"],
+                "measurementTechnique": ["behavioral technique"],
+                "variableMeasured": ["BehavioralTimeSeries"],
+            },
+        ),
+        (
+            ["PupilTracking"],
+            {
+                "approach": ["behavioral approach"],
+                "measurementTechnique": ["behavioral technique"],
+                "variableMeasured": ["PupilTracking"],
+            },
+        ),
+        (
+            ["EyeTracking"],
+            {
+                "approach": ["behavioral approach"],
+                "measurementTechnique": ["behavioral technique"],
+                "variableMeasured": ["EyeTracking"],
+            },
+        ),
+        (
+            ["CompassDirection"],
+            {
+                "approach": ["behavioral approach"],
+                "measurementTechnique": ["behavioral technique"],
+                "variableMeasured": ["CompassDirection"],
+            },
+        ),
+        (
+            ["ProcessingModule"],
+            {
+                "approach": None,
+                "measurementTechnique": ["analytical technique"],
+                "variableMeasured": ["ProcessingModule"],
+            },
+        ),
+        (
+            ["RGBImage"],
+            {
+                "approach": None,
+                "measurementTechnique": ["photographic technique"],
+                "variableMeasured": ["RGBImage"],
+            },
+        ),
+        (
+            ["DecompositionSeries"],
+            {
+                "approach": None,
+                "measurementTechnique": ["fourier analysis technique"],
+                "variableMeasured": ["DecompositionSeries"],
+            },
+        ),
+        (
+            ["Units"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["spike sorting technique"],
+                "variableMeasured": ["Units"],
+            },
+        ),
+        (
+            ["Spectrum"],
+            {
+                "approach": None,
+                "measurementTechnique": ["fourier analysis technique"],
+                "variableMeasured": ["Spectrum"],
+            },
+        ),
+        (
+            ["OptogeneticStimulusSIte"],
+            {
+                "approach": ["optogenetic approach"],
+                "measurementTechnique": None,
+                "variableMeasured": ["OptogeneticStimulusSIte"],
+            },
+        ),
+        (
+            ["OptogeneticSeries"],
+            {
+                "approach": ["optogenetic approach"],
+                "measurementTechnique": None,
+                "variableMeasured": ["OptogeneticSeries"],
+            },
+        ),
+        (
+            # the tricky case of having number of instances of the data type
+            # https://github.com/dandi/dandi-cli/issues/890
+            ["CurrentClampSeries (94)"],
+            {
+                "approach": ["electrophysiological approach"],
+                "measurementTechnique": ["current clamp technique"],
+                "variableMeasured": ["CurrentClampSeries"],
+            },
+        ),
+    ],
+)
+def test_ndtypes(ndtypes, asset_dict):
+    asset = BareAssetMeta(
+        contentSize=1,
+        encodingFormat="application/x-nwb",
+        digest={"dandi:dandi-etag": "0" * 32 + "-1"},
+        path="test.nwb",
+    )
+    asset = process_ndtypes(asset, ndtypes)
+    for key in ["approach", "measurementTechnique"]:
+        if asset_dict.get(key) is None:
+            assert getattr(asset, key) == []
+        else:
+            assert getattr(asset, key)[0].name == asset_dict.get(key)[0]
+    key = "variableMeasured"
+    assert getattr(asset, key)[0].value == asset_dict.get(key)[0]
['dandi/tests/test_metadata.py', 'dandi/metadata.py']