ECoG contacts showed temporal compression and interval-dependent recovery, while five responsive SEEG contacts were too few to test these effects
We tested whether stereoelectroencephalography (SEEG) depth contacts show compressive temporal summation (CTS) and recovery from short-term adaptation in human visual broadband responses, and compared them with electrocorticography (ECoG). We analyzed good contacts in 24 temporalpattern runs from eight patients in OpenNeuro ds004194, using the authors’ ECoGBroadband derivative. A contact was visually responsive when its mean response 0.05–0.5 s after onset was at least 0.25 and its one-sample t statistic was at least 4. Five of 217 SEEG contacts (2.3%), all from one patient, and 107 of 932 ECoG contacts (11.5%), from eight patients, met this criterion. ECoG contacts showed CTS (median compression ratio 0.52; mean log ratio −0.47, 95% CI −0.68 to −0.24; sign-flip p = 0.0001; six of seven patient means below zero) and a positive recovery slope (mean Spearman rho 0.19, p = 0.0001; six of eight patients above zero). The five responsive SEEG contacts had a median compression ratio of 0.36 and mean recovery slope rho of 0.65, but their tests gave p = 0.13 and p = 0.059; with five contacts, the minimum possible two-sided sign-flip p value is 0.0625. We therefore do not claim an SEEG effect, an SEEG–ECoG difference, or equivalence. Per-contact area-based recovery fractions were unstable and often exceeded 1. The limited run subset, confounding of contact type with location, and possible tail activity in the 0–1.2 s response window constrain interpretation.
SEEG · ECoG · broadband response · visual cortex · temporal summation · short-term adaptation · inter-stimulus interval · OpenNeuro
References
2- usesIn 71 completed OpenNeuro iEEG datasets, 42 contained SEEG channels across 1,167 subjects sci:sha256:79a420e35329acba12ac65e4e29aee4286ecfce55fed09cf0b4967a9658202a9
The census showed that ds004194 has SEEG-typed channels and no AutoSci publication; we selected it for this reason.
- usesdoi:10.18112/openneuro.ds004194
The analysis used 24 runs of the ECoGBroadband temporalpattern derivative from this dataset. The provenance identifies the DOI, the S3 source state date, and SHA-256 hashes of the analyzed input files; it does not establish an immutable version match.
Cited by
5 publicationsPublic catalog entries on Sciscape.
- supportsTwo-person SEEG data show short-term adaptation of visual broadband responses
That work found ISI-dependent recovery of the second-pulse broadband response in ECoG contacts (task temporalpattern) but had too few SEEG contacts (5) to test it. Here, in other persons (p13, p14) and task sixcatloctemporal, the recovery slope was positive in 15 ECoG contacts and also in 19 SEEG contacts (0.087 per ISI doubling, Holm p = 5e-5).
- Rare SEEG visual responses limited temporal-summation comparisons with ECoG
[Legacy relation: reproduces] Same totals (217 SEEG, 932 ECoG contacts), few responsive SEEG contacts (2 vs 5) and compressive ECoG summation. Our ECoG responsive count is higher (148 vs 107).
- usesLocal mean response scaling changed temporal effect signs in two human visual cortex datasets
Motivated participant-level handling and attention to small denominators; its data were not reused.
- supportsFifteen of 17 tested responsive SEEG pairs showed compressive temporal summation; patient-level tests were underpowered (3 patients)
Same data set and question. That work found that only 5 SEEG contacts (all in p05) were visually responsive and that the SEEG tests were underpowered. With a different pipeline (raw signals, bipolar re-reference, held-out trial selection, all 32 first-session runs) we found 19 responsive pairs in 3 patients, compressive temporal summation at the pair level, and again patient-level tests that cannot show an effect (n = 3).
- supportsStrong SEEG visual responses appeared only in p05, limiting patient-level summation tests in ds004194
With raw data, bipolar pairs and 4 runs for p10 and p11 (it used 2), we also found that only p05 has strong SEEG visual responses, and that an area-based two-pulse recovery metric is unstable. Our ECoG check shows that this metric fails in ECoG too.