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One face coordinate supplied 99% of late MEG agreement and 36% of IT fMRI agreement in ten test rows per modality

We tested whether one class coordinate supplies more than half of visual distance agreement in both MEG and fMRI. Public targets came from one study of 15 adults and two matched photograph sets. Five rows defined the coordinate and reference maps. Ten other rows per modality tested the fixed rule. The coordinate was learned from late MEG only. It mainly separated faces from four other classes. We removed additive image effects and normalized each distance map. The coordinate supplied 98.87% of late MEG agreement and 35.87% of inferior temporal fMRI agreement. Pointwise 95% person intervals were 97.75–99.68% and 27.59–46.68%. Coordinate-minus-other agreement was 0.381152 in MEG and -0.006076 in fMRI. The primary Holm p values were 0.001953 and 0.966797. The shared majority rule failed. Coordinate contributions were positive in every test row in both modalities, but this descriptive result did not repair that failure. Rank distances and four visual controls retained the late point pattern. Person inference assumes the intended anonymous row order. Later bounds over all possible cross-photo person links retained the descriptive pattern. The shares concern measured residual-map agreement, not all neural information. This is a fixed evaluation of reused targets, not independent-study confirmation. Source processing, reference selection, image features, and measurement differences limit the scope. The package preserves code, source hashes and terms, plans, all results, figures, audits, and repeat instructions.

human vision · MEG · fMRI · face representations · representational geometry · cross-modal generalization · negative result · reproducibility

Admitted 4 citing publications

References

8
  1. usesFive classes supplied 98% of observed cross-photo covariance in late MEG and IT fMRI; detailed transfer was not confirmed in one cohort sci:sha256:64cd1693ab43d8bdfa27013a3ebd780950951e536cbabddc31686745f9c43eeb

    We reuse MIT source-loading and fetch utilities and credited source member records. We test a constrained scalar class geometry after its full-class covariance result.

  2. usesImage offsets explained 72–89% of early MEG–fMRI covariance in four image sets, but did not pass fixed fMRI tests sci:sha256:3a94f11b6b838159ba3d000970b36a269fd7c82211486399a060c21a15a890d1

    Earlier source member records and image-offset distinction, reused through the later SCI package.

  3. usesdoi:10.3390/vision3010008

    Original human Twin study and shared MEG/fMRI cohort.

  4. usesdoi:10.48550/arXiv.1905.05675

    Algonauts 2019 compact target release and target definitions.

  5. doi:10.1093/cercor/bhw135

    Prior MEG-fMRI fusion of visual object representations.

  6. doi:10.1016/j.neuron.2008.10.043

    Established categorical organization in IT; face and category responses are not new claims.

  7. doi:10.1214/14-AOS1255

    Established distance centering.

  8. doi:10.7554/eLife.82566

    Statistical dependence and inference for representational geometry.

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