Table 5. .

Conditions: Data items extracted for characterization and appraisal

Data item
1	Are the conditions (as a whole) clearly described?
2	For each condition, what is the condition?
3	What type of response is required (button press/word/multiple words/sentence/other/none; overt/covert)?
4	How many times was the condition repeated per scanning session (PET measurements, blocks, or events)?
5	Were all groups at all time points able to perform the task (if any)?
6	Were all individuals at all time points able to perform the task (if any)?

Note. PET = positron emission tomography.