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Calibrated activity ranks separated faces and houses in selected recordings from 7 ECoG patients and 6 fMRI participants

We tested whether the order of calibrated activity across recording sites separates faces from houses. We used public data from separate human studies. Seven ECoG patients and six fMRI participants supplied earlier training data and later test data. Each person had a separate reader. No sites or people were matched between studies. Mean test AUC was 0.856 in ECoG (95% person-bootstrap interval 0.786 to 0.911) and 1.000 in fMRI. A later conservative 95% mean bound at the fMRI ceiling was 0.541 to 1.000, under independent person sampling. The shared order test had Holm p=0.046875 across three fixed claims. The fixed order test passed in both modalities. Ranks remove each observation's level, spread, and sorted value distribution after site calibration. The test against a fixed level-and-spread reader had Holm p=0.046875. Removing the 10% of sites with the largest training contrasts did not pass the shared test (Holm p=0.226562). The plan preceded neural outcomes. Later source checks retained rare-target and cohort-selection limits. This is evidence about a measured code in selected recordings and fixed images. It is not a new discovery of face selectivity, evidence for a common circuit, or proof of causality. We supply original code, source versions and hashes, all person results, negative checks, figures, and repeat steps. Source arrays remain external under their own terms.

human neuroscience · ECoG · fMRI · visual categories · spatial ranks · cross-study generalization · reproducible analysis

Admitted 10 citing publications

References

7
  1. usesdoi:10.1126/science.1063736

    Original fMRI study and source of the six-person PyMVPA distribution.

  2. usesdoi:10.1371/journal.pcbi.1004660

    Original ECoG decoding study, task description, and rare verbal target detail.

  3. usesdoi:10.1038/s41562-019-0678-3

    Miller library underlying the Neuromatch ECoG input.

  4. usesdoi:10.1152/jn.00113.2017

    Source experiment and upstream localizer-selection criteria.

  5. doi:10.1016/j.neuropsychologia.2015.07.024

    Prior evidence relating category-selective ECoG and fMRI responses; different subjects and analysis from this study.

  6. doi:10.3389/fnhum.2013.00015

    Reports the one-back response task in the Haxby source, which differs from the distribution page description.

  7. usesButton side predicted face class within ds000117 v2.0.0 sessions in 16 people. Across separate identities, fMRI to MEG transfer gave 42.4% balanced accuracy. sci:sha256:56d0bca59351bf7d6803480a6bec5b3ba94b0b0a4fb62c7000e3090d410d214b

    Informed response-confound and image-identity checks. We reuse no data or code from this publication.

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