A fixed voltage gate had higher mean SEEG waveform forecast error than matched random selection in eight epilepsy sessions
A fixed gate based on voltage before a pulse did not lower mean waveform forecast error in this test. We used public SEEG data from OpenNeuro ds004696 version 1.0.1. The sample had 86 selected stimulation sites in eight epilepsy sessions. The first five good pulses at each site set a fixed response forecast and a voltage threshold. The gate retained a later readout when its voltage RMS before the pulse was at or below the early 80th percentile. It retained 381 of 612 later readouts. Mean site yield, with equal person weights, was 64.0 percent. Mean normalized error was 0.3653 for the gate and 0.3476 for random selection with the same retained count at each site. Six of eight people had higher error with the gate. Mean person error increased by 3.9 percent. Its descriptive 95 percent person interval was -0.8 to 8.4 percent. The exact two-sided person sign-flip value was 0.09375. A comparison with all readouts gave a 3.0 percent mean person error reduction. That comparison includes a change in the retained site mixture. Matching site yield isolates selection within sites. This is an exploratory test in a reused cohort. It does not establish worse error in a wider population. No stimulation was withheld. The package contains exact input windows, code, figures, source hashes, and a public source retrieval recipe.
stereoelectroencephalography · brain-computer interfaces · electrical stimulation · waveform forecasting · readout selection · voltage RMS · matched random selection
References
8- usesFive-pulse noise scaling reduced later single-pulse error for 20–500 ms centered bipolar SEEG in eight patient sessions sci:sha256:fbc06ab469d48eac7a6f54dd97cd24ccd9c7c5ca4b0db4d64340536b3e81428a
Its forecast scale method supplied the fixed five-pulse waveform forecast used in this test.
- usesClipped inverse pre-pulse power weights increased mean later SEEG forecast error in eight epilepsy patient sessions sci:sha256:20af61e57fe887d14bf18b3d0c4737d0400db0df9bb4ce6e2b790ea1017140db
Its test of voltage weights before calibration pulses informed the question. The present test uses current target voltage to select later readouts at matched site yield.
- usesPast pulse updates reduced normalized 20–500 ms SEEG forecast error versus fixed five-pulse templates at 86 selected sites in eight epilepsy sessions sci:sha256:fd07147e53abc31f50ad87cee1d777a9d91b45b3d2a172703485899005f00530
This archive supplied all 1042 pulse windows, the fixed readout choices, joined events, source hashes, and the public retrieval recipe.
- usesA five-pulse test did not establish lower SEEG size prediction error from pre-pulse RMS in eight patient sessions sci:sha256:947fe7aa6e242e0f9e723e54cb14b472f7f801ecbaac8501e809356a1e6953c5
Its test of a response-size forecast from earlier voltage informed the question. The present test scores full waveform error and uses an earlier voltage window.
- usesFive calibration pulses gave mean later signed template AUC of 0.939 compared with 0.859 for one pulse in eight SEEG sessions sci:sha256:1d2aa103275ad7400befec4c899740ede8f2eb59a09897bdc3f4d4e190e54418
Its first-five response energy rule supplied the fixed bipolar readout choices through the input archive.
- usesdoi:10.18112/openneuro.ds004696.v1.0.1
The analyzed SEEG windows and events are from OpenNeuro ds004696 version 1.0.1.
- doi:10.1523/JNEUROSCI.2201-22.2023
- usesdoi:10.1371/journal.pcbi.1011105
The archived source processing includes the CRP method.
Cited by
1 publicationPublic catalog entries on Sciscape.
- usesEarly SEEG error did not establish better late error ranking than a matched before-pulse score after five calibration pulses in eight people with epilepsy
Its before-pulse gate result informed the matched-duration control and the fixed-count random comparator. The current risk score and primary endpoint differ.