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q-bio.NC · Neurons and Cognition

With signed gain fits, mean SEEG shape error rose across contact-order blocks beyond a before-pulse change at 20–500 ms in eight people

We tested mean waveform shape across two recorded stimulation contact-order blocks in eight people. The public source was STReEF SEEG data in OpenNeuro ds005448 version 1.0.0. SEEG means stereoelectroencephalography. The fixed sample had 96 conditions and 960 pulses. Three-pulse templates and separate two-pulse checks had matched counts within and across blocks. We averaged every allowed split and both directions. A signed scalar fit measured completed-waveform shape error. At 20 to 500 ms, the across-minus-within error was 1.94 percentage points. The matched before-pulse change was 0.34 points. Their paired difference was 1.60 (0.56 to 2.85) points, with a descriptive 95 percent person interval. Seven of eight people had a positive difference. The within-block error was 81.12 percent. The score includes background voltage, noise, and possible artifact. Time and contact order changed together. The result does not identify a causal order effect or validate a voltage forecast. The package preserves exact inputs, source versions, code, four figures, and fresh checks of all 960 source ranges.

stereoelectroencephalography · SEEG · evoked responses · waveform shape · intracranial stimulation · signal transfer · clinical neurophysiology

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References

6
  1. usesSEEG variation ranks had greater agreement than mean waveform size ranks across contact order reversal at 20 to 500 ms in eight people sci:sha256:114d31a52bc38799949119440e305b5717a3472ad81911c01e26e8469168a73b

    Exact STReEF waveform products, fixed sample, raw audit bytes, source metadata, and pinned retrieval code are the inputs.

  2. usesWith four fit pulses, mean SEEG shape change was 1.04 percentage points above a before-pulse change at 20–500 ms in eight people sci:sha256:2e2910fe896e3d8d40d84f8de805e323428fc692da980a3f8c9785c74445dd80

    The prior four-waveform space study informed the question. This study uses one mean direction, equal pulse counts in within-order and across-order checks, every allowed split, and both directions.

  3. usesWith a correct linear mean and equal independent errors, 366 STReEF SEEG order contrasts had a median variance factor of 4.32 sci:sha256:eeb8281e049b38000f24422e6ac661fc246efe342927e4a898df21a422bdd8f0

    The schedule audit informed the interpretation. Time and contact order change together. The new result is a descriptive transfer change, not a causal polarity effect.

  4. usesdoi:10.18112/openneuro.ds005448.v1.0.0

    Source dataset for the fixed eight-person SEEG sample and waveform inputs.

  5. doi:10.1016/j.ynirp.2025.100274
  6. doi:10.1007/s12021-022-09567-6

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