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Fix, Neuralynx encoding error #1779

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Merged
merged 2 commits into from
Sep 22, 2025
Merged

Fix, Neuralynx encoding error #1779

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c124cf5
neuralynx encoding error
h-mayorquin Sep 18, 2025
f81a7a1
add tests
h-mayorquin Sep 20, 2025
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8 changes: 7 additions & 1 deletion neo/rawio/neuralynxrawio/nlxheader.py
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Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,13 @@ def _to_bool(txt):
("DspHighCutNumTaps", "", None),
("DspHighCutFilterType", "", None),
("DspDelayCompensation", "", None),
("DspFilterDelay_µs", "", None),
# DspFilterDelay key with flexible µ symbol matching
# Different Neuralynx versions encode the µ (micro) symbol differently:
# - Some files use single-byte encoding (latin-1): DspFilterDelay_µs (raw bytes: \xb5)
# - Other files use UTF-8 encoding: DspFilterDelay_µs (raw bytes: \xc2\xb5)
# When UTF-8 encoded µ (\xc2\xb5) is decoded with latin-1, it becomes "µ"
# This regex matches both variants: "µs" and "µs" but normalizes to "DspFilterDelay_µs"
(r"DspFilterDelay_[Â]?µs", "DspFilterDelay_µs", None),
("DisabledSubChannels", "", None),
("WaveformLength", "", int),
("AlignmentPt", "", None),
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1 change: 1 addition & 0 deletions neo/test/rawiotest/test_neuralynxrawio.py
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Expand Up @@ -31,6 +31,7 @@ class TestNeuralynxRawIO(
"neuralynx/Cheetah_v5.6.3/original_data",
"neuralynx/Cheetah_v5.7.4/original_data",
"neuralynx/Cheetah_v6.3.2/incomplete_blocks",
"neuralynx/two_streams_different_header_encoding",
]

def test_scan_ncs_files(self):
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