Package: metricT Type: Package Title: Directional Fragility Diagnostics for EEG Connectivity Version: 0.2.0 Authors@R: person("Akira", "Kimura", email = "a-kimura@paz.ac.jp", role = c("aut", "cre"), comment = c(ORCID = "0000-0003-0220-5678")) Description: Implements Metric-T, a permutation-based diagnostic that flags when the reported direction of a group difference in electroencephalography (EEG) functional connectivity depends on the choice of metric. Direction consistency (DC) converts the weighted phase lag index (wPLI) and magnitude-squared coherence (MSC), both derived from the same cross-spectrum, into the percentage of channel-pair features for which one group exceeds the other; Metric-T is T = DC(wPLI) - DC(MSC). Significance is assessed by aligned label permutation with marginal and Westfall-Young max-T multiplicity control. For small samples the reference set is enumerated completely: exact two-group tests, the complete two-group labelling space (in which cut-points, exclusions and batches are located on one distribution), and a stratified exact test for a continuous covariate. Core functions use base R only; a 'shiny' graphical interface is included. Method: Kimura (2026) . License: MIT + file LICENSE Encoding: UTF-8 Language: en-GB Depends: R (>= 4.0.0) Imports: stats, graphics, grDevices, utils Suggests: shiny, testthat (>= 3.0.0) Config/testthat/edition: 3 URL: https://github.com/akimura753/metricT BugReports: https://github.com/akimura753/metricT/issues RoxygenNote: 7.3.1 NeedsCompilation: no Packaged: 2026-10-16 12:45:28 UTC; root Author: Akira Kimura [aut, cre] (ORCID: ) Maintainer: Akira Kimura Repository: https://cran.r-universe.dev Date/Publication: 2026-10-16 09:50:13 UTC RemoteUrl: https://github.com/cran/metricT RemoteRef: HEAD RemoteSha: 0bb7a90765e1af6883297544aff23a2084ece2aa