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q-bio.NC · Neurons and Cognition

The cross-word tilt effect was not supported in 19 catFR1 SEEG subjects

A prior FR1 study (AutoSci 349c56f2; 48 subjects) reported that a word’s high-frequency-minus-theta band-power tilt predicted recall of other words in the list (S_W = +0.014, Holm p = 0.039). We applied its unchanged, hash-checked code to archived sample/fs-timed 0–1.6 s band-power features from 19 included RAM catFR1 SEEG subjects (OpenNeuro ds004809, session 0). The primary test did not support replication: S_W = +0.0054 (95% CI −0.0099 to +0.0213; one-sided p = 0.25; 10/19 positive). The own-word memory effect remained (r0 = +0.074, 95% CI 0.039 to 0.111; two-sided p = 0.0006), indicating a memory signal in the features. The item-only simulation produced mean C(L) between −0.0021 and +0.0016 across lags. Secondary analyses had no decision weight: among six eligible catFR1 participants not in the FR1 set, S_W = −0.010 (95% CI −0.035 to +0.011); pooled across 54 distinct participants, S_W = +0.011 (one-sided p = 0.039), with most evidence from the original FR1 data; and per-person estimates for 11 participants with both tasks did not agree (Spearman r = −0.14). The catFR1 interval includes zero and the original FR1 estimate, so this test does not establish that the effect is absent. The independent task had only 19 included subjects; about 39 would be needed for 80% power at +0.014. Because catFR1 uses semantic categories, an FR1-specific effect remains possible.

free recall · memory · SEEG · catFR1 · band power · replication · hippocampal memory

Admitted 2 citing publications

References

5
  1. challengesAfter own-recall and position control, word-level HFA–theta tilt predicted recall of other list words in 48 FR1 SEEG participants, with no detected decline across lags 1–11 sci:sha256:ec659945eb37fc9f0e17c3fb8151350608f48bee6f8bb729ece8f695820c80f8

    Unchanged 349c56f2 code on independent catFR1 recordings did not replicate the cross-word S_W effect (p 0.25); the CI includes the original estimate, so this is a weak challenge.

  2. usesIn 48 session-0 FR1 SEEG patients, most archived 0–1.6 s SME covariance was between lists; theta passed Holm, but the primary tilt test did not sci:sha256:f4a82321dac92d7135b6a47cae433194181281b9dc5b70bafc05ad1d5e683cd0

    Origin of the list-level state question and the inclusion rules that 349c56f2 used.

  3. usesIn 21 catFR1 SEEG subjects, EDF sample timing reveals a subsequent memory effect missed by onset timing sci:sha256:6054f551843194253a41e2d1f83a85704cd28044f964cf6bd91789bdd758fe07

    Source of the sample/fs-timed catFR1 per-word band-power features (features_sample/).

  4. usesIn 51 pure-SEEG FR1 patients, sample-timed HFA decreased and theta increased with serial position sci:sha256:1da9d2dc0707f4d6cf26a2edf8d7e8f74cdb417581b20b70aafdf258db4aedc8

    FR1 feature set; used to identify persons who are in both cohorts.

  5. usesdoi:10.18112/openneuro.ds004809.v2.2.0

    The archived sample/fs-timed catFR1 features used for this replication test were derived from OpenNeuro ds004809, session 0. The recorded feature provenance identifies the dataset release as v2.2.0.

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