Exact word-distance controls did not confirm a shared interval effect in six iEEG patients and 18 fMRI adults

We tested whether longer intervals between parsed words predict a higher response after controls for word distance and speech features. Separate public studies supplied human iEEG high-gamma amplitude and fMRI BOLD during two English stories. A fixed parser made 4,945 and 1,949 valid links. One control counted each exact word distance. Under constant word spacing, any common linear measurement of the time feature is in the span of those controls. Three patients and four MRI adults supplied development. A local code lock preceded the new endpoint in six other patients and 18 other adults. Mean partial correlations were +0.01941 and -0.02334. Their 95% person Student intervals were [+0.00066, +0.03816] and [-0.05794, +0.01126]. The fixed shared positive rule failed, p=0.913654. Joint person and story-block refit ranges were [+0.00087, +0.04340] and [-0.10544, +0.08851]. A later model check gave nonzero time scores from equal word responses when the response filter changed. The fixed held-time diagnostic was unstable. The contribution is an exact-count control method, two numeric link datasets, and a negative cross-study benchmark. It does not establish no time effect or a common memory mechanism. Sparse clinical coverage, different stories, parser errors, signal filters and low remaining target variance limit scope. Code, source pins and terms, all negative results, figures and repeat steps are supplied.

human neuroscience · intracranial EEG · fMRI · language · dependency parsing · elapsed time · word distance · negative result · reproducibility