bids-specification/src/schema/rules/checks/channels.yaml at 866aced16dabc624431566cbf3ad72fcb017d132 · bids-standard/bids-specification · GitHub

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---
ElectrodeSpecificity:
  issue:
    code: EXCESSIVE_ELECTRODE_SPECIFICITY
    message: |
      Task, acquisition or run entities detected in electrodes.tsv.
      Electrode definitions should generally not vary within a session.
      Consider removing the excess entity/entities or create a new
      session each time electrodes are reconfigured.
    level: warning
  selectors:
    - suffix == 'electrodes'
    - extension == '.tsv'
  checks:
    - '!("task" in entities)'
    - '!("acquisition" in entities)'
    - '!("run" in entities)'

CoordsystemSpecificity:
  issue:
    code: EXCESSIVE_COORDSYSTEM_SPECIFICITY
    message: |
      Task, acquisition or run entities detected in coordsystem.tsv.
      Coordinate systems should generally not vary within a session.
      Consider removing the excess entity/entities or create new
      sessions when multiple coordinate systems are appropriate.
    level: warning
  selectors:
    - suffix == 'coordsystem'
    - extension == '.json'
  checks:
    - '!("task" in entities)'
    - '!("acquisition" in entities)'
    - '!("run" in entities)'

RequiredCoordsystem:
  issue:
    code: REQUIRED_COORDSYSTEM
    message: |
      If an electrodes.tsv file is provided, an associated coordsystem.json must also be present.
    level: error
  selectors:
    - suffix == "electrodes"
    - extension == ".tsv"
    - '!intersects([datatype], ["ecephys", "icephys"])'
    - datatype != "emg" # coordsys file may have space entity that electrodes.tsv lacks
  checks:
    - associations.coordsystem != null || associations.coordsystems != null