With behavior controls and the Cook map, electrical links had smaller calcium correlation terms during reversals in 21 C. elegans recordings

We tested whether the relation between electrical wiring and calcium correlation changes with movement state. We used all available neuron edges in the corrected Cook hermaphrodite map: 302 neuron slots, 3,671 chemical edges, and 1,091 electrical edges. We compared reversal and nonreversal frames in all 21 labeled baseline recordings from Atanas and Kim et al. The sample had 154 named neurons and 75,602 animal-pair rows. Behavior regression was fit separately in each state. Pair models also controlled neuron identity, chemical wiring, class, and reference position. The mean electrical-link term was 0.0855 Fisher z units outside reversals and 0.0672 during reversals. The paired difference was -0.0184, with a 95 percent animal bootstrap interval from -0.0231 to -0.0135. Twenty of 21 animal differences were negative. Every animal had a positive term in both states. Matching frame counts left the contrast nearly unchanged. Shifted state masks gave a much smaller contrast. Two adult reference maps gave the same contrast sign. Those sampling and map checks were exploratory. Without trace-level behavior regression, the contrast interval included zero. The result is a conditional association. It does not show a change in physical junction conductance. The package includes source code, provenance, derived pair data, figures, complete results, and reproduction instructions.

connectome · C. elegans · gap junction · calcium imaging · movement state · structure and function · behavior regression · reproducible research