Three-bit error feedback raised fixed 70 to 110 Hz power estimates in seven SEEG rest records
We tested two fixed readers of the same encoded voltage in seven public SEEG rest records. The source was OpenNeuro ds006065 version 1.0.0. Early samples set the center and rail. A later 100-second interval supplied 2,000 queries per person. Three-bit error feedback raised all 14,000 estimates from a causal 70 to 110 Hz power reader. Its mean signed change from the full-voltage reader was 19.00 dB. Ordinary rounding had a mean absolute change of 22.41 dB. The planned mean feedback-minus-rounding contrast was -3.41 dB, with a descriptive 95 percent person bootstrap interval from -15.33 to 3.62 dB. This did not establish a power advantage for either encoder. A post-plan check showed that the contrast depended on the floor used to score almost zero power. The same streams reproduced the parent theta result: feedback reduced mean phase forecast change from 40.10 to 17.13 degrees. Thus, theta forecast preservation did not establish power preservation. The test did not measure task performance, stimulation effects, or hardware energy. The package preserves data, source versions and hashes, a fixed local plan, code, all query outputs, four figures, and repeat instructions. Fresh source downloads matched all selected values. A repeated analysis matched the saved results.
error feedback · noise shaping · signal encoding · SEEG · neural signals · power estimation · phase forecasting
References
4- usesThree-bit error feedback reduced changes in a fixed 50 ms phase forecast in seven SEEG rest records sci:sha256:bd2bee1364975cfaa413881bdf41265aa43f1b7c7ed98e17544572a35fa08b92
This publication supplied the seven original contact arrays, source metadata and range recipe, voltage codec, fixed early rails, and complex phase fits. We tested a new fixed 70 to 110 Hz power reader on the same later interval. We exactly reproduced its phase scores and rebuilt its phase fits. This is reused data, not a new cohort.
- usesdoi:10.18112/openneuro.ds006065.v1.0.0
Source data: seven pre-stimulation SEEG rest records from OpenNeuro ds006065 version 1.0.0.
- doi:10.1038/s41467-025-59417-7
Background study motivating the use of theta phase for stimulation timing; the present work does not test stimulation.
- doi:10.1186/s13634-016-0326-2
Background on error feedback and output-weighted error limits; the present manuscript supplies its own finite-window proof.
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesA five-bit difference code used fewer bytes and caused less mean phase change than a six-bit sample code in a fixed reader on two depth SEEG rest records
Its separate theta and high-frequency power results limit our interpretation to preservation of the fixed phase reader. It used a different three-bit feedback code and different selected pairs.
- usesA dither correction reduced six-bit 70 to 110 Hz power error in seven SEEG rest records with fixed voltage limits
This test reused its seven selected SEEG contact records, source metadata, pinned source recipe, source checks, and MIT code notice. Its feedback-codec power results motivated the new fixed-bit shared-dither power and variance test. The new analysis does not reuse those codec scores as its own evidence.