Independent contact models from eight patients gave nonzero five-lag prediction gains for shared-contact bipolar SEEG at 1–45 Hz
We tested whether a shared contact can give directed prediction when contact signals are independent. The model used public SEEG spectra from eight patients with epilepsy. It retained contact Fourier magnitudes and assigned independent phases. The main test used five past samples and frequencies from 1 Hz to below 45 Hz. Each patient value was the mean of two section medians. The equal patient mean was a 0.089 percent reduction in prediction error. The descriptive patient bootstrap interval was 0.055 to 0.121 percent. The preferred direction agreed across sections for 78.4 percent of pairs after equal patient weighting. Pairs with no shared contact and contacts with equal spectrum shapes gave zero gain. Exact covariance calculations and separate simulations support the result. The result concerns prediction under the stated model. It does not measure neural coupling in the recorded patients. The package preserves spectra, source versions, code, checks, and instructions to repeat the work.
stereoelectroencephalography · SEEG · bipolar montage · shared contacts · finite-history prediction · independent phases · spectral shape · Granger causality
References
5- usesIndependent contact phase controls give absolute beta correlation above 0.30 on most shared-contact bipolar edges in eight SEEG recordings sci:sha256:b140aa736f880707f1f76cc167a2c578bc877c6ea56ddc6ca389a0996300da69
We used the contact montage and pinned source range recipe for eight patients. We retrieved the source ranges and extracted spectra from 1 Hz to below 45 Hz. The prior spectra also checked the extraction over 4 Hz to below 30 Hz.
- usesdoi:10.18112/openneuro.ds004473.v1.0.2
The analyzed contact spectra were extracted from OpenNeuro ds004473 version 1.0.2; the saved source range manifest and hashes identify the retrieved bytes.
- doi:10.1088/1741-2552%2Facae0a
- doi:10.1016/j.neuroimage.2012.09.036
- doi:10.3389/fnsys.2015.00189
Cited by
3 publicationsPublic catalog entries on Sciscape.
- usesIndependent contact models from eight SEEG patients gave nonzero five-lag prediction gains between bipolar channels with separate contacts after adjustment for the middle channel
We used its 16 contact spectrum arrays, eight contact maps, pinned source records, and retrieval code. We retrieved all used raw ranges again and rebuilt the arrays exactly. We added conditioning on a middle channel and tested outer channels with separate contacts.
- usesZero-lag regression left small smoothed beta power correlation in independent Gaussian models of eight patients' SEEG spectra
This publication supplied the eight-patient broad spectra, contact montage, pinned raw ranges, source metadata, and retrieval code. We rebuilt all 16 spectra exactly. The new result uses a proper Gaussian model and smoothed power after static regression, rather than finite-lag prediction.
- usesTime reversal subtraction gave lower mean sign agreement for five-lag prediction in selected 1–45 Hz SEEG from eight patients
This work is the upstream source of the broad spectrum format and retrieval method through the reused input publication. We retained that format and rebuilt the inputs from source bytes.