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Table of Contents
MDM (BrainVoyager QX's Multiple-Design-Matrix) file format
Motivation
For several reasons, it is useful to be able to inspect and alter the list of studies used in particular analysis (e.g. to use a search-and-replace edit command in case files have been moved).
General setup
The information contained in BrainVoyager QX text files is either given in the form:
NameOfField: Value
or, if a short list of values (e.g. an RGB color code triplet) is given, as
NameOfList: Value1 Value2 Value3
or yet, in case several values are to be coded, as an array of values (or strings) without any header
Row1Col1 Row1Col2 Row1Col3 Row2Col1 Row2Col2 Row2Col3 ...
Text-based tokens (constant values) are generally given without quotes (with exceptions noted where appropriate)! Linebreaks and empty lines are added for increased readability. They do, however, not impact the actual reading of information from the file!
Example
- example.mdm
FileVersion: 3 TypeOfFunctionalData: VTC RFX-GLM: 1 PSCTransformation: 1 zTransformation: 0 SeparatePredictors: 2 NrOfStudies: 5 "/Data/Study/Sub01/Sub01_MNI.vtc" "/Data/Study/Sub01/Sub01_Protocol.prt" "/Data/Study/Sub02/Sub02_MNI.vtc" "/Data/Study/Sub02/Sub02_Protocol.prt" "/Data/Study/Sub03/Sub03_MNI.vtc" "/Data/Study/Sub03/Sub03_Protocol.prt" "/Data/Study/Sub04/Sub04_MNI.vtc" "/Data/Study/Sub04/Sub04_Protocol.prt" "/Data/Study/Sub05/Sub05_MNI.vtc" "/Data/Study/Sub05/Sub05_Protocol.prt"
Fields
As almost any text-based file format in BrainVoyager QX, a FileVersion field allows the program to add new features. Given that information, the following fields are currently supported by NeuroElf/xff:
| Field name | Type | Content | Meaning |
|---|---|---|---|
| FileVersion | single number | 1, 2, or 3 | the default is 3, as it allows the most flexibility (see notes of other fields below) |
| TypeOfFunctionalData | text token |