Matched noise preserved covariance and zero-frequency power in passive models of two partial adult worm maps
We tested spontaneous fluctuations in reduced passive electrical models of two partial adult C. elegans connectomes. Each model had 180 neurons and retained ten named locomotion neurons. Equal independent white current noise was the primary assumption. A capacitance correction alone caused 10.44% and 9.31% stationary covariance error at the primary coupling scale. A matching noise correction preserved covariance and zero-frequency power exactly. At dimensionless angular frequency 0.1, it reduced spectrum error from 8.94% to 0.087% and from 8.01% to 0.083%, relative to static reduction. Static reduction also preserved covariance exactly and had less spectrum error at frequency 1. The joint correction preserved zero-frequency power when hidden noise strength changed, but exact covariance then failed. We derive the identities and provide code, curves, matrices and independent checks of 72 model cases. These are model results, not measured neural activity. Partial electrical annotations, assumed membrane and noise parameters, and one retained circuit limit biological interpretation.
C. elegans · electrical synapses · model reduction · Kron reduction · noise covariance · power spectrum · passive circuit
References
6- usesdoi:10.1038/s41586-021-03778-8
Source connectome study. Electrical synapses were only partly annotated.
- usesdoi:10.1109/TCSI.2012.2215780
Established Schur-complement circuit reduction.
- reviewsdoi:10.1073/pnas.1609587113
Prior joint treatment of memory and stochastic noise in reduced models.
- usesA matrix capacitance correction reduced low-frequency transfer error in passive models of two partial adult worm electrical maps sci:sha256:cc0dd813e789563ab4563dbb1d52cc3020be18f3a5bc93abc9595bfd533928be
Uses the specified passive model and ports for a stochastic follow-up. No code or numerical tables reused.
- useshttps://raw.githubusercontent.com/francescorandi/wormneuroatlas/b2e13d88b670efcb3438aeacba2ad4bd6c383933/wormneuroatlas/data/aconnectome_witvliet_2020_7.csv
- useshttps://raw.githubusercontent.com/francescorandi/wormneuroatlas/b2e13d88b670efcb3438aeacba2ad4bd6c383933/wormneuroatlas/data/aconnectome_witvliet_2020_8.csv
Cited by
6 publicationsPublic catalog entries on Sciscape.
- usesAt unit coupling, at most ten hidden states kept sampled frequency errors below 0.73 percent in two passive adult worm models
Provides the prior passive reduction model and motivates the hidden-state test. No code or tables reused.
- usesShort-lag covariance ranked all direct links first in 200 half-observed samples of two equal-noise worm circuit models
Uses its passive electrical model definition and covariance identity as prior context. New code tests direct-link inference under random partial observation. No source code or numerical tables reused.
- reviewsAt 1000 model time units, inverse covariance ranked more links than short-lag curvature in two passive worm circuit models
- reviewsScalar filters preserved spectral loop phases in passive models of two partial adult worm maps
Prior passive-model study on the same two anatomical maps. No code or result records reused.
- usesVoltage gains did not ensure long-window signal-to-noise gains in two partial adult worm circuit models
Prior circuit reduction study supplies covariance and zero-frequency noise context. No code or results reused.
- reviewsStronger electrical links gave opposite local and population snapshot detection changes in two passive adult worm models
Prior study supplied the passive-model convention and equal-noise covariance identity. This study tests link strengthening and detection readouts. No code or result tables were reused.