Outputs of NiMARE

NiMARE includes a wide range of tools with a correspondingly large number of possible outputs. Here we outline the rules we apply to NiMARE outputs.

File names

NiMARE-generated files, especially ones made by meta-analyses, follow a naming convention somewhat based on BIDS.

Here is the basic naming convention for statistical maps:


First, the value represents type of data in the map (e.g., z-statistic, t-statistic). Some of the values found in NiMARE include:

  • z: Z-statistic

  • t: T-statistic

  • p: p-value

  • logp: Negative base-ten logarithm of p-value

  • chi2: Chi-squared value

  • prob: Probability value

  • of: Test value of MKDA and KDA methods

  • ale: Test value of ALE and SCALE methods

Next, a series of key/value pairs describe the methods applied to generate the map.

  • desc: Description of the data type. Only used when multiple maps with the same data type are produced by the same method.

  • level: Level of multiple comparisons correction. Either cluster or voxel.

  • corr: Type of multiple comparisons correction. Either FWE (familywise error rate) or FDR (false discovery rate).

  • method: Name of the method used for multiple comparisons correction (e.g., “montecarlo” for a Monte Carlo procedure).