Electrical links had positive activity associations within reversal and non-reversal bouts after cell and contact controls in 40 and five selected worms

We tested whether electrical links predict shared calcium activity inside movement bouts after each bout mean is removed. We linked identified neurons in 40 Atanas/Kim recordings and eight separate Dag recordings to a fixed Cook worm map. The fixed coverage rule retained all 40 main animals and five separate animals. Per-animal models controlled both cells, chemical wiring, shared chemical input, atlas distance, mirror identity, ganglion and neurite contact. Mean partial correlations in non-reversal and reversal bouts were 0.0681 and 0.0644 in the main sample, and 0.0720 and 0.0686 in the separate sample. All four nominal 98.75% animal-bootstrap intervals had positive lower limits. All fixed checks had positive mean associations. Removing any one neuron class kept both means positive. No shared node-label shuffle within ganglia reached the observed means in 999 draws. The state differences were uncertain. We corrected incomplete and mixed-use ganglion metadata after the first scores and document the full change. This is a small conditional association. Anatomy and activity came from different animals. Both recording samples came from one lab. Five separate animals give weak population inference; their two-sided sign tests have p=0.0625. Calcium kinetics, movement, common input and optical effects can remain. The result does not establish direct electrical causation or equal coupling between states.

C. elegans · electrical synapses · gap junctions · within-bout covariance · behavioral state · structure and function · calcium imaging · neuron fixed effects · replication