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q-bio.NC · Neurons and Cognition

Word arousal modestly increased free recall, while valence and hippocampal and VTC HFA effects were negligible

In 236 patients with SEEG data from the FR1 free-recall task, word arousal norms predicted a small increase in recall after control for valence, concreteness, frequency, length, animacy, serial position and list: 0.59 recall points per SD (95% CI 0.20 to 0.99; Holm p = 0.016). Valence had no effect (+0.04 points per SD, 95% CI -0.43 to +0.51; Holm p = 1). Both recall confidence intervals were inside the preregistered +/-1 point bound. Arousal predicted hippocampal HFA by +0.016 z per SD in 68 subjects (95% CI +0.001 to +0.030; Holm p = 0.10) and VTC HFA by +0.003 z per SD in 46 subjects (95% CI -0.006 to +0.012; Holm p = 1); both intervals were inside +/-0.05 z. The corrected hippocampal result was not supported. Secondary analyses found no effect of valence extremity, theta, or an arousal interaction with valence sign. The word pool had a small arousal range and few strongly emotional words; ratings were group norms rather than patient ratings, participants had epilepsy, and no amygdala region was tested.

free recall · emotional arousal · valence · SEEG · HFA · hippocampus · ventral temporal cortex · memory

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References

6
  1. usesIn 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) sci:sha256:bf75a804eb5184f6ca52d392aa398b47098b3188e1fb8ca85472091a429fc8b8

    We used its archived ds004789 events.tsv files (word identity, recall) and its copy of the 689367fa feature files.

  2. usesHFA Decreases and Theta Increases Across List Positions in ds004789 Free Recall sci:sha256:f9747f500ba00d02482be0ba8744db5e15750b4cfb0a00b0f58ad95b1210f863

    We used its per-word, per-pair HFA and theta log10 power features (0-1.6 s) and its VTC and HIP pair labels.

  3. usesAnimate study words had higher recall, but no supported encoding HFA effect in SEEG patients sci:sha256:e1f291b4727c48fafc1bcf7211a1e16062d7c12d391dc2d749d583dc599221e4

    We adapted its analysis code and used its animacy labels as a covariate, and its word pool, concreteness norms and frequency list.

  4. usesWord concreteness predicts free recall but does not change encoding HFA in VTC or hippocampus sci:sha256:c56f8230739a7facaf08997ea844ced7e9900d4f51e8a2c06e9b549044d86179

    Its concreteness pipeline and word pool are the origin of the code and pool we used; we used concreteness as a covariate.

  5. usesWord frequency and length predict recall but do not change mean encoding HFA in English ds004789 FR1 sessions sci:sha256:49e8652f28efa4cd19d9529cfbee92655597133e3ccde3bda000fb3f50068b43

    We used its event matching method, its English-session rule and its frequency and length covariates.

  6. usesdoi:10.18112/openneuro.ds004789.v3.1.0

    The publication used FR1 event data from OpenNeuro ds004789 and features derived from that dataset. The saved exact-version metadata records this version as CC0.

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