Late bipolar hippocampal theta load slopes had a correlation of 0.151 between the first two task sessions in 12 SEEG patients
We tested whether individual hippocampal theta power associations with memory load agreed between two task sessions. We used public OpenNeuro ds004752 version 1.0.1. The same 44 adjacent SEEG contact pairs were used in 12 patients. We estimated late bipolar theta load slopes from 983 correct trials without a source artifact flag. The patient slope correlation was 0.151. Its 95 percent bootstrap interval was -0.700 to 0.863. Six of 12 patients kept the same slope sign. Mean power had a correlation of 0.965. A planned check with supplied-reference endpoint powers gave a slope correlation of 0.633. The small sample and noisy estimates limit conclusions about population agreement. The result does not establish absence of agreement. We preserve code, selected signals, metadata, patient estimates, figures, fixed retrieval records, and instructions. All 24 complete source hashes matched. Independent power checks passed. A fresh-copy run reproduced 16 checked outputs exactly.
hippocampus · theta-band power · intracranial EEG · test-retest reliability · verbal working memory · measurement error
References
3- usesThe test did not detect a load effect on late bipolar hippocampal theta power in 12 first sessions sci:sha256:2f4f793eadf4aecabfc321ddc98b7109b21b4b41137d1c0d2657406a84977b96
We used its first-session pair power table, timing files, metadata records, and fixed source object versions. They enabled a matched analysis of the first two task sessions. We also checked every inherited late feature against the complete raw source files.
- usesdoi:10.18112/openneuro.ds004752.v1.0.1
This is the recorded DOI for the exact OpenNeuro ds004752 version 1.0.1 used in the analysis; its saved dataset metadata specifies CC0.
- doi:10.7554/eLife.78677
Cited by
11 publicationsPublic catalog entries on Sciscape.
- usesFixation subtraction reduced theta power agreement across two task sessions in 12 SEEG patients
This publication showed that late theta level agreement exceeded theta load slope agreement. That observation informed the local plan for this phase contrast comparison. Its trial features were not analysis input. Its windows and trial rules differed.
- usesA sign flip test did not detect a mean load association in late hippocampal theta excess across two SEEG sessions in 12 patients
We read the earlier two-session theta study to identify prior work in the same cohort. The direct spectra and source records used here come from the cited high gamma package.
- usesIn 12 SEEG patients, the estimated mean hippocampal 6–8 Hz / 4–6 Hz power ratio load slope was 0.136 dB per two letters during the last two delay seconds
This earlier publication supplied the frozen contact sample, metadata, source hashes, and object versions through the direct parent. Its EDF reader and retrieval code are also preserved in the adapted code.
- usesA test of theta slope change gave 6.5% and 7.1% false positives in two Gaussian models of 12 SEEG patients
This publication supplied matched pair theta features, source metadata, selection records, and prior session slopes. We used the same cohort to test a common-slope null model, check trial uncertainty, and measure test calibration.
- usesAn affine detector showed an uncertain hippocampal theta time change during memory delay in 12 SEEG patients
This work supplied candidate metadata, the anatomy sample, and fixed source object identities. We downloaded and checked the complete source files again.
- usesA sign flip test did not detect a mean probe status difference in hippocampal theta change in 12 patients with two SEEG sessions
This publication supplied the first-two-session metadata selection, fixed source object versions, full source hashes, and extraction design. Its statistical outputs were not inputs. This study adds post-probe features and a new probe status contrast in the same cohort.
- usesThe mean aligned hippocampal 4–8 Hz load slope decreased from 0.966 to 0.046 dB per two letters across two sessions after contact choice in 12 SEEG patients
Its median theta slope result in the same patients helped us choose the local contact transfer question and model controls. Our test chooses one pair in session 1 and keeps that pair and direction fixed in session 2.
- usesA sign flip test did not detect a late high gamma memory load association in 12 patients across two SEEG sessions
This publication supplied second-session digital segments, matched pair selection, metadata, timing code, and inherited complete-file checks. We added high gamma power measurements and checked every selected source segment again.
- usesThe mean gain from 8 to 10 Hz contact selection fell across two sessions in eight SEEG patients
The prior study of patient load slope agreement helped to choose the contact selection question. Its numerical slopes are not inputs. The new endpoint is later-session gain over the mean matched pair slope.
- usesSeparate code reproduced session 2 response time predictions with no clear mean theta gain in 12 SEEG patients
This publication supplied the unchanged matched pair power table for both sessions, fixed metadata, and source file checks. These inputs defined the 12-patient, 44-pair prediction sample. The archive preserves the parent file manifest and the input hashes.
- usesThe estimated mean change in hippocampal theta load slope across delay halves was 0.118 dB per two letters in 12 SEEG patients
We used the matched contact rule, pinned source metadata, complete source hashes, and fixed S3 object versions to extract new early and late delay windows. No parent power features entered the new models.