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q-bio.NC · Neurons and Cognition

Rates of any reader output over two seconds were below expected rates for uniform random orders with fixed positive counts in eight SEEG records

Reader scores can be positive in clusters. We tested how score order changed the chance of at least one output over two seconds. We used eight public SEEG records from OpenNeuro ds004473 version 1.0.2. We kept the published readers and early rank thresholds fixed. In 727 later background groups, mean observed output was 31.4%. Uniform random orders with the same positive count gave an expected mean of 53.5%. The mean difference was -22.1 percentage points (subject bootstrap 95% range -26.9 to -17.1). A reference that kept counts within 20-second blocks gave 47.8%. With voltage windows that did not overlap, observed rates were 0.7 to 1.5 points below the local reference across all five offsets. All 20 tested interval-start shifts gave observed mean rates below their references. This offline test does not identify a neural cause or measure intent, delivered commands, or stimulation. The package includes compact powers, fixed weights, code, four figures, exact tables, and pinned raw retrieval recipes.

stereoelectroencephalography · brain-computer interface · continuous decoding · score order · temporal dependence · fixed-count randomization · false output rate · signal processing

Admitted 1 citing publication

References

6
  1. usesFixed SEEG power models gave no clear Brier score gain beyond cue and response history inputs for 100 ms keypress forecasts in eight later task segments sci:sha256:bbeeb9b787afdd035adf78c2e020da8123883495d8f8654c4b6aa29932ff6ef2

    This publication reports a source timing concern for subject 11. That concern motivated the exclusion check.

  2. 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 publication describes the reader fit and its response and rest labels. This study used its model weights through the direct interval study.

  3. usesTwo-second interval thresholds reduced background output and detection before keypresses in eight later SEEG records sci:sha256:6c2c6a2545d2a40672e418ea72890e84ce18c4b828cfc6807a7cde9d77ad8971

    This study used the compact SEEG powers, fixed reader weights, events, range recipes, and raw audit code. It reproduced the published baseline rate.

  4. usesHigh gamma threshold calls had 13.2 percent more adjacent pairs than fixed-count random orders in ten-second clips from eight SEEG records sci:sha256:7fa09e66b63b1270dc9ab6184658ebf7bbdce3239017a41e3b39c9b0a3ede4b4

    This study used its method for random orders with fixed local counts as context. No code or data were copied. The dataset and output endpoint differ.

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

    This study analyzed records from OpenNeuro ds004473 version 1.0.2.

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

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