sciscape Publications
← All publications
q-bio.NC · Neurons and Cognition

Past averaging of three scores gave 9.0% mean detection before keypresses at a 5% interval target in eight SEEG records

We tested whether a past mean of three scores improves detection before keypresses at a fixed early interval target. We used public SEEG from OpenNeuro ds004473 v1.0.2 and fixed eight-pair readers in eight patients. Each rule used its own threshold from earlier two-second background intervals. The nominal target was 5% of intervals with an output. Later tests had 635 background intervals and 425 keypresses. Equal-patient mean detection was 10.51% for the original score and 9.04% for the past mean. The paired change was -1.48 percentage points. Its descriptive 95% patient interval was -4.31 to +1.59 points; exact sign-flip p was 0.4375. Mean background risk was 3.94% and 3.88%. A check of all 20 interval start phases gave detection changes from -2.14 to +0.91 points. The result did not show a gain from averaging under this test. The package preserves code, compact inputs, source recipes, figures, and checks. These reused task records do not test intended commands, online control, or brain stimulation.

brain-computer interface · stereoelectroencephalography · score averaging · interval risk · keypress detection

Admitted 1 citing publication

References

5
  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

    The direct source inherited its continuous powers and fixed reader models from this archive. Its report also flags a possible response-time error for patient 11. That concern led to an added post-result omission check.

  2. 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 earlier study defined the condition of three consecutive scores above threshold. The current minimum-of-three rule uses that condition as a secondary comparator. The current study uses interval output risk in place of commands per minute, and its main rule averages three scores.

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

    This study reuses its fixed SEEG powers, reader models, event records, source metadata, raw range recipes, and independent Fourier audit code. It compares past score rules after each rule receives an early interval threshold.

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

    The analyzed public task records and exact version are identified as OpenNeuro ds004473 v1.0.2 in the publication and source metadata.

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

Cited by

1 publication

Public catalog entries on Sciscape.