diff --git a/src/02-common-principles.md b/src/02-common-principles.md index e29d0b96ed..337705235c 100644 --- a/src/02-common-principles.md +++ b/src/02-common-principles.md @@ -118,7 +118,7 @@ misunderstanding we clarify them here. the final `_`), right before the **File extension**, for example, it is `eeg` in `sub-05_task-matchingpennies_eeg.vhdr`. -1. **File extension** - a portion of the file name after the left-most +1. **File extension** - a portion of the filename after the left-most period (`.`) preceded by any other alphanumeric. For example, `.gitignore` does not have a file extension, but the file extension of `test.nii.gz` is `.nii.gz`. Note that the left-most period is included in the file extension. @@ -133,10 +133,10 @@ misunderstanding we clarify them here. The following standard describes a way of arranging data and writing down metadata for a subset of neuroimaging experiments. Some aspects of the standard -are compulsory. For example a particular file name format is required when +are compulsory. For example a particular filename format is required when storing structural scans. Some aspects are regulated but optional. For example a T2 volume does not need to be included, but when it is available it should be -saved under a particular file name specified in the standard. This standard +saved under a particular filename specified in the standard. This standard aspires to describe a majority of datasets, but acknowledges that there will be cases that do not fit. In such cases one can include additional files and subfolders to the existing folder structure following common sense. For example @@ -149,13 +149,13 @@ specification. ## File name structure -A file name consists of a chain of *entities*, or key-value pairs, a *suffix* and an +A filename consists of a chain of *entities*, or key-value pairs, a *suffix* and an *extension*. Two prominent examples of entities are `subject` and `session`. For a data file that was collected in a given `session` from a given -`subject`, the file name MUST begin with the string `sub-