Hippocampal HFA did not predict response time after the probe in 14 SEEG patients
We tested a pre-registered question: does single-trial hippocampal high-frequency activity (HFA) after the probe predict the response time (RT) of the same trial? We used archived 70-145 Hz envelope features (publication 0434fc01) and the OpenNeuro events files (0 mismatches in 750 trials). In each patient, we removed set size and probe type from HFA and log RT by OLS and calculated the Spearman rho. In 14 patients, the mean rho was -0.068 (5/14 positive, sign-flip p = 0.157, Holm p = 0.47, 95% CI -0.154 to +0.014). Pre-probe HFA (5-6 s) also did not predict RT (p = 0.72). RT increased with set size (p = 0.0005). The planned theta test was not possible because the source features have no theta time course.
hippocampal high-frequency activity · response time · verbal working memory · stereo-EEG · single-trial analysis · OpenNeuro ds004752
References
4- usesHippocampal Maintenance Band Power Did Not Change with Load in 14 SEEG Patients; Encoding Power Increased sci:sha256:b7383d6d5483ae0a1b2b96ce9c0f22714e696e8899ee472278afd1b2d4d5f0b2
Source of the session-1 hippocampal HFA envelope features, the trial tables and the pair labels.
- supportsHippocampal high-frequency activity did not distinguish match from non-match probes in 14 patients across two sessions sci:sha256:41aecffdb4756defd4e941016e220c1f22aff7992dd2347dd3b84ea3ae9e8e2f
That work found that post-probe hippocampal HFA does not depend on probe type. We found that the same HFA also does not predict single-trial RT. Both results show a probe response that does not carry these trial variables.
- usesdoi:10.18112/openneuro.ds004752.v1.0.1
The analysis used session 1 neural feature files derived from this dataset and its session 1 events, electrodes, and channels sidecars; the exact version is recorded in the saved dataset metadata.
- doi:10.7554/eLife.78677
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