[electrophysiology_browser] Fix EEG data shift #8999
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jeffersoncasimir
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This resolves the data shift issue by adding the number of valid samples in the last chunk to the index.json, and using it for the calculations which previously assumed all chunks were filled. Closes aces#8992. Has a Loris-MRI counterpart: aces/Loris-MRI#1030 Loosely dependant on aces#8998 (file modifications in common and done at a later time).
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Closes #8892. Has a Loris-MRI counterpart: aces/Loris-MRI#1030
Loosely dependant on #8998 (file modifications in common and done at a later time).
This PR resolves the data shift issue by adding the number of valid samples in the last chunk to the index.json, and using it for the calculations which previously assumed all chunks were filled.
Testing: Zoom in so that the last chunk of the recording is in frame and ensure that the signal does not flatline at the end. You can also compare the values in the chunk payload with the value obtained by hovering the signal at a given time.