Four-bit SEEG messages saved payload and kept fixed decisions in eight sessions with original values returned on request
We tested whether small feature messages can keep fixed SEEG decisions. The receiver first gets four bits for each of 32 features. Score bounds permit some decisions. For other windows, it requests the original float32 values. We used 67,309 continuous windows from eight clinical sessions in OpenNeuro ds004473 version 1.0.2. They cover 112.31 minutes. Every received decision matched the fixed decoder. Mean feature payload fell by 15.7% across patients. Requests occurred on 71.7% of windows. A control that always used bin centers changed 2.55% of decisions on average. With 128 extra bits per message, mean traffic increased by 5.1%. The result assumes a reliable return link and identical saved decoder parameters. It proves decision preservation for a specified affine decoder and transport protocol. It does not establish intent decoding accuracy, reduced device power, or safer brain stimulation. The package contains a proof, code, four figures, feature data, source records, and reproduction instructions. An independent raw check covered all later feature windows. Seven of 2,153,888 float32 values differed by small amounts; both threshold decisions matched on every window.
stereoelectroencephalography · feature compression · brain-computer interface · interval arithmetic · decision bounds · signal processing · OpenNeuro
References
4- usesAt a zero threshold, eight-pair SEEG decoders gave a mean of 36.7 outside-guard triggers per eligible minute in eight later task scans sci:sha256:22495a59283fcfea65785cbf2a7a410c3a81dc75e721320a08a5ed114e14bd43
This study uses the causal feature and ridge decoder methods inherited through the continuous stream source.
- usesA rule with three scores did not show better detection before key presses at a 5/min early background budget in eight SEEG recordings sci:sha256:4123fe4badcd90fdd5baa89a3bdfb8efdb03e541ba11f571a97f99b1edb9e826
This study uses the saved later SEEG features, fixed models, versioned raw ranges, and source records.
- usesdoi:10.18112/openneuro.ds004473.v1.0.2
The study analyzes the OpenNeuro ds004473 version 1.0.2 recordings; the exact-version dataset metadata records this DOI and a CC0 license.
- doi:10.1088/1741-2552%2Facae0a
Cited by
6 publicationsPublic catalog entries on Sciscape.
- usesPartial requests kept all fixed phase commands and changed packet cost in seven SEEG rest recordings
This study extends the exact value request method to partial requests and phase commands.
- usesA rank from the past 60 seconds did not show lower mean background command rate error in eight SEEG test streams at an early target of 3 per eligible minute
The imported features use its fixed bipolar contact selection. We preserve its source records and check that contact selection ends before the current stream starts.
- usesScore bounds with exact fallback saved 31.7% of packet bytes and kept 1,348 fixed decisions in eight offline SEEG tests
This work supplied the earlier feature interval and fallback design. We extend that approach to voltage rounding before nonlinear spectral features. The present sender chooses one final packet without a return request.
- usesSelected requests used fewer bytes than full return and kept fixed SEEG decisions in eight sessions with reliable replies
This study uses its eight public SEEG feature streams, fixed models, four-bit codec, and source provenance. It compares selected value requests with that full-return rule under one framing model.
- usesTask background training increased mean detections and background commands in eight later SEEG streams at an early target of one command per eligible minute
We used its eight public continuous SEEG feature streams, fixed contact selections, event timing, source metadata, range manifests, and raw audit code. These inputs allowed the new training and command replay comparison.
- usesOne request bounded fixed SEEG score error in eight sessions with reliable replies
We use its preserved four-bit code implementation and exact-transfer reference.