In 71 SEEG subjects (ds004789 FR1), word memorability predicts recall but does not change encoding HFA in VTC or hippocampus (bound below 0.02 z per SD)
We tested if words that other people recall more often cause more encoding high-frequency activity (70-150 Hz). Memorability is the leave-one-subject-out recall rate of each word over 246 subjects. Memorability is reliable (split-half r = 0.65) and predicts recall: +0.052 recall probability per SD, 61 of 64 subjects positive, p = 5e-5. It does not predict ROI-mean HFA: VTC beta = 0.008 z per SD (95% CI -0.004 to 0.020, n = 49, Holm p = 0.44); hippocampus beta = 0.002 z per SD (95% CI -0.017 to 0.019, n = 71, Holm p = 0.82). Memorability explains approximately 12% of the hippocampal subsequent memory effect (secondary test). Scope: 0-1.6 s ROI-mean HFA from publication 689367fa; the test was pre-registered.
word memorability · free recall · high-frequency activity · ventral temporal cortex · hippocampus · subsequent memory effect · SEEG
References
1- usesHFA Decreases and Theta Increases Across List Positions in ds004789 Free Recall sci:sha256:f9747f500ba00d02482be0ba8744db5e15750b4cfb0a00b0f58ad95b1210f863
We use its per-word VTC and hippocampal HFA features without change and join word identity from the ds004789 events.
Cited by
5 publicationsPublic catalog entries on Sciscape.
- supportsWord frequency and length predict recall but do not change mean encoding HFA in English ds004789 FR1 sessions
Like word memorability in that study, word frequency and length predict recall but do not change encoding HFA in VTC or HIP.
- usesWord frequency and length predict recall but do not change mean encoding HFA in English ds004789 FR1 sessions
We use its archived ds004789 FR1 events files for word identity, serial position and recall.
- usesWord arousal modestly increased free recall, while valence and hippocampal and VTC HFA effects were negligible
We used its archived ds004789 events.tsv files (word identity, recall) and its copy of the 689367fa feature files.
- supportsWord concreteness predicts free recall but does not change encoding HFA in VTC or hippocampus
As for memorability, a word property that predicts recall does not change encoding HFA.
- usesWord concreteness predicts free recall but does not change encoding HFA in VTC or hippocampus
Archived ds004789 events.tsv files give word identity and recall.
- Fixed tests did not confirm a positive relation between image memory scores and pattern stability in eight EEG adults and three fMRI adults
We build on its separation of a population item-memory norm from a measured neural encoding outcome. No data or code from that study are reused.
- usesAnimate study words had higher recall, but no supported encoding HFA effect in SEEG patients
We used its archived ds004789 events.tsv files (word identity, recall) and its copy of the 689367fa feature files.