{
 "dataset": "Randel2026b",
 "version": "v1",
 "licence": "CC-BY-4.0",
 "source": "Randel et al. 2026 (Larva1099), soma-resolved calcium traces from the light-sheet recording, supplied by the authors as em-lsm-data.zip",
 "time_axis": "columns are imaging frames at 2.87 Hz (seconds = frame/2.87); recording ~3612 s",
 "traces": "derived/traces_mapped.csv.gz: 389 neurons x 10367 frames, values as in neuron_traces_cleaned_3um.npz (float, 5 significant figures)",
 "mapping": "EM skeleton -> trace row by nearest soma position (soma_match_um). Row order of the original array is a positional assumption (i-th smallest label of em_based_lsm_segmentation_3um.tif) and is UNCONFIRMED by the authors.",
 "excluded": "8 skeletons sharing a trace row with a nearer skeleton (trace_status ambiguous_shared_row_farther) and 14 with no soma match have no trace in traces_mapped.csv.gz; they stay in neurons.csv",
 "unconfirmed": [
  "START/END event indexing (1- vs 0-based)",
  "meaning of HP in eventAnnotations",
  "stimulus frame indexing"
 ],
 "events": "derived/events.csv from eventAnnotations.csv (START;END in frames, behaviour flags)",
 "n_neurons_table": 411,
 "n_traces": 389,
 "frames": 10367
}