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eess.SP · Signal Processing

Eight-bit voltage gave 70.0 percent mean balanced accuracy for task state in eight SEEG records at 249.85 Hz with fixed early ranges and fixed readers

We tested whether eight-bit voltage preserves task state reading after a filtered fourfold rate reduction. The test used eight public SEEG records from OpenNeuro ds004473 version 1.0.2. Each record had eight fixed bipolar pairs and a reader trained on early trials. Voltage ranges used six times the early voltage RMS. The readers and ranges stayed fixed for 674 later trials. Eight-bit voltage at 249.85 Hz gave 70.05 percent mean balanced accuracy. Unrounded voltage at that rate gave 70.60 percent. The mean change was minus 0.55 percentage points. Its descriptive 95 percent person bootstrap interval was minus 1.62 to plus 0.37 points. The lower bound passed the fixed two-point mean loss check. One record lost 3.49 points. The saved voltage payload used 1,000 bytes per state buffer, compared with 8,000 native sample bytes. The package includes exact source buffers, eight-bit packets, code, models, figures, hashes, and source retrieval instructions. This reused, offline test gives no result for new sessions, live brain control, stimulation, or device energy.

stereoelectroencephalography · voltage quantization · signal processing · balanced accuracy · brain-computer interfaces

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References

9
  1. usesA dither correction reduced six-bit 70 to 110 Hz power error in seven SEEG rest records with fixed voltage limits sci:sha256:af44577f1aaa93d39072929cfbd90a046eea0db4fcfeec522394c48b8ec068d1

    Used its dithered voltage error result as scientific context. The present test measures uniform voltage codes without dither in later task state predictions.

  2. supersedesEight-bit voltage gave 70.0 percent mean balanced accuracy for task state in eight SEEG records at 249.85 Hz with fixed early ranges and fixed readers sci:sha256:6f004c9a874950a868fce66bcdc0be63fb974be1bc5b110f8bc6c9d98160648b

    This version corrects the package check to allow metadata added by sci fetch. The voltage data, results, models, and figures are the same.

  3. usesFiltering before fourfold sample removal gave 70.6% mean balanced accuracy in later trials from eight SEEG recordings sci:sha256:8bc11c5e9496aba0a89fbf8535edb5ce1336d5a00cc9df2b9795ddfb7b8ddde4

    Used the exact native buffers, selection, source metadata, fixed rate conversion, power method, and model helpers. The native and unrounded lower-rate results were reproduced before the new voltage precision comparison.

  4. uses4-bit SEEG power features met a mean loss limit of 2 percentage points in eight later trial tests with fixed training bounds and refitted models under paired t assumptions sci:sha256:61b8e8bba3a469f2c448880ade2d08333b69d0a10d84af65ebc1a679fc6eafa5

    Used its power feature precision result as scientific context. The present test measures voltage rounding before power calculation and later predictions.

  5. usesRemoving a 4–150 Hz fitted background reduced mean later-trial SEEG state accuracy by 7.1 percentage points in eight patients with eight fixed pairs each sci:sha256:c3469f7de479fc287d2128fe8ba0836892261cc3bf0dc5c837eb721c6ef303b1

    Used its preserved digital buffer lineage and pinned range provenance through the immediate rate study.

  6. usesEight SEEG pairs classify pre-response and rest windows at 70.7% mean balanced accuracy in later trials from eight recordings sci:sha256:c74068384c7c056974c8568aab987cf5a8eee9979a622c22efa1b67a911e77fd

    Used the fixed early pair choices, retained trials, exclusions, labels, native power records, and EDF source helpers through the later packages.

  7. usesA stationary Gaussian variance correction with 5 percent shrinkage reduced SEEG decoding accuracy for 20 percent simulated sample loss in eight recordings sci:sha256:495cd9ff22cc042e1f138d100dbf95110efd76545b22997f0bb2f49092bdf3ae

    Used the inherited voltage retrieval lineage for exact public bipolar samples.

  8. usesdoi:10.18112/openneuro.ds004473.v1.0.2

    Source dataset for the eight SEEG records and selected buffers analyzed in this study.

  9. doi:10.1088/1741-2552%2Facae0a

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