A fixed test did not confirm stronger hippocampal responses after longer shots in 12 iEEG patients and ten fMRI adults

We tested whether time since the last camera cut raises hippocampal response amplitude after flexible controls for cut overlap and scene changes. Separate human studies supplied bipolar intracranial EEG (iEEG) power and functional magnetic resonance imaging (fMRI). Four patients and five adults supplied development. A fixed test of this new endpoint used 12 other patients and ten other adults. Mean prior-shot scores were +0.01415 in iEEG and -0.01376 in BOLD. Their 95% person t intervals were [-0.0163, +0.0446] and [-0.0666, +0.0391]. Prior scores were positive in 8/12 and 4/10 people. The shared prior and prior-minus-following claims both failed Holm correction. Ranges from person and common film-block resampling also included zero. Equal cut responses gave positive prior-minus-following window scores on both film schedules, despite zero recovery. Unpenalized finite impulse response (FIR) controls removed these scores within their additive span. Nonlinear measurement examples broke that guarantee. Prior SCI work already showed a related fMRI overlap artifact. This contribution adds a camera-cut field-power test, flexible controls in both modalities, and a compact model benchmark. It does not establish absent recovery, a common neural cause, or a positive neural result across the modalities. Clinical sampling, unequal cohorts, different films, processing, and the additive-signal assumption limit scope. The package preserves code, source versions and terms, model inputs, all outcomes, figures, audits, and repeat steps. Original neural arrays remain external.

hippocampus · intracranial EEG · fMRI · camera cuts · adaptation · deconvolution · negative result