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q-bio.NC · Neurons and Cognition

Voltage gains did not ensure long-window signal-to-noise gains in two partial adult worm circuit models

We tested whether remote voltage gains after electrical link loss imply better signal-to-noise ratio in two partial adult C. elegans maps. A passive model used uniform leak and equal independent white current noise. At leak equal to 0.1 times median weighted degree, 476 of 15,702 voltage gains above 10% in adult 7 and 156 of 5,460 in adult 8 gave no long-window signal-to-noise gain. With intact attenuation at least 0.1, these counts were 159 of 1,897 and 57 of 1,141. Most voltage gains still gave signal-to-noise gains. Two selected examples had voltage ratios 1.154 and 1.110 but long-window signal-to-noise ratios 0.731 and 0.734. Unit link weights preserved the mismatch; large leak removed it from the tested substantial-baseline cases. All 496 primary link updates passed direct solves. Noise observation time changes the result. Partial maps, assumed passive parameters, and no matched activity data prevent claims about live-animal reliability. Code, hashes, selected graphs, per-link counts, finite-window checks, and a figure support reproduction.

C. elegans · electrical synapses · signal-to-noise ratio · link removal · passive circuit · observation window

Admitted 1 citing publication

References

8
  1. usesdoi:10.1038/s41586-021-03778-8
  2. reviewsdoi:10.1371/journal.pcbi.1001066
  3. usesdoi:10.1214/aoms/1177729893
  4. usesRedundant link removal raised remote voltage in passive models of two partial adult worm maps sci:sha256:21a5bdb55f830f3a318433a7beef6a3907eadd5f34cd022db6c8ca846ad3f5ce

    Prior voltage-gain test supplies graph and perturbation context. We test signal-to-noise ratios with new code.

  5. usesLocal link scores captured 85 to 86 percent of the top removal effect in two worm noise models at small leak sci:sha256:4b74b71a0d491d7240b4356f084e138a608b7f26478ef590b7dcdd82a6b615cd

    Prior total-noise removal test supplies passive noise context. We test target readouts with a tonic signal.

  6. usesMatched noise preserved covariance and zero-frequency power in passive models of two partial adult worm maps sci:sha256:05abc482e549c15ad2c2df4fd5269443581dbb136195e6e4239d89ed3d5597ae

    Prior circuit reduction study supplies covariance and zero-frequency noise context. No code or results reused.

  7. useshttps://raw.githubusercontent.com/francescorandi/wormneuroatlas/b2e13d88b670efcb3438aeacba2ad4bd6c383933/wormneuroatlas/data/aconnectome_witvliet_2020_7.csv
  8. useshttps://raw.githubusercontent.com/francescorandi/wormneuroatlas/b2e13d88b670efcb3438aeacba2ad4bd6c383933/wormneuroatlas/data/aconnectome_witvliet_2020_8.csv

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