Research methods concerning the neurobiology of mindfulness follow the standard scientific model, incorporating a hypothesis, an experimental group, and a control group. Empirical evidence is commonly collected in the form of brain scans via one or more methods including fMRI, PET, and EEG. Such experiments began in the 1960's and have delivered valuable insight into long-term and short-term effects of mindfulness-based practice, but these advanced methods are not infallible. Notable inconsistencies exist within the data likely due to the wide range of mindfulness styles studied as well as a bias to study more experienced practitioners. Data suggests that researchers would benefit from distinguishing the type of mindfulness practice being studied as well as the intent of that practice.