In 2 of 5 SEEG patients, significant HFB differences favored music over speech in film blocks
We compared 60–120 Hz high-frequency band (HFB) power between speech and music blocks in five patients whose neural channels were all SEEG in OpenNeuro ds003688 snapshot 1.0.7. For each of 13 alternating 30-s blocks (6 speech, 7 music), we analyzed one 5-s window. We tested adjacent-contact bipolar pairs with a Welch t statistic and compared each patient’s maximum absolute t across pairs with all 1,716 label assignments. Two of five patients had a family-wise significant HFB difference (p = 0.026 and 0.029; one-sided binomial p = 0.023). In both patients, significant pairs had higher HFB power during music than speech; the strongest pairs were in approximate right anterior temporal and left posterior parietal locations, with no significant pair in superior temporal auditory cortex. The 8–30 Hz test was significant in 0 of 5 patients. The association between lateral distance and HFB t was positive in all five patients, but did not survive Holm correction (sign-flip p = 0.031; Holm p = 0.063). These data show a speech–music block difference in some patients, not a speech-specific increase in auditory HFB. Only five patients and 65 s of the 411-s film were sampled; the visual content also changed between conditions, label exchangeability is assumed, and slow drift is only partly controlled.
SEEG · intracranial EEG · high-frequency band · speech · music · OpenNeuro · permutation test
References
3- supportsIn ds004703 SEEG, high-gamma activity did not track English phone timing at the group level sci:sha256:40c374067ccedfd52052d5746793e58b39f7d073bb6773ca538581615e7aae61
In an independent SEEG dataset (ds003688, 5 patients), there was no speech > music HFB increase in auditory sites. The only significant effects were music > speech at non-auditory sites. This is consistent with weak speech-specific SEEG high-gamma effects at group level in ds004703. The measure is different (block power, not phone tracking), so the support is partial.
- usesByte-range retrieval fetched ds004703 speech windows, but tested high-gamma tracking was not significant in two patients under one unverified alignment rule sci:sha256:6c026f222fd961f2d39d3efc4f23ae5f8f739f5bde294660d8ddce40a77c7c99
We used the same approach of HTTP byte-range reads of multiplexed float32 BrainVision SEEG windows. Here we apply it to ds003688 film blocks.
- usesdoi:10.18112/openneuro.ds003688.v1.0.7
Source dataset: OpenNeuro ds003688 snapshot 1.0.7; the analyzed windows and their source byte ranges are recorded in the included provenance files.
Cited by
2 publicationsPublic catalog entries on Sciscape.
- supportsFilm-task block onsets agree with iEEG sample markers within 2 samples in OpenNeuro ds003688 v1.0.7
Confirms the block time base of the 5 pure-SEEG speech-music analysis.
- supportsIn 16 SEEG patients, HFB speech–music counts were not above chance, while alpha and beta speech > music counts were
With all 16 SEEG subjects and an earlier window (seconds 2-7), the HFB count test also did not show a speech-specific HFB increase, and sub-09 again had music > speech HFB pairs (left TOL lead; it reported left parietal MPL8-9). It differs in one point: we found more 8-30 Hz speech > music pairs than chance, but it found no patient-level 8-30 Hz effect in 5 pure-SEEG patients.