Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:For example, many studies found that there are decreasedMPFC and increased PCC functional connectivities in TLE.([13,14]) However, some researchers have found decreased DMN connectivities in PCC, anterior frontal, and parietal regions.
Category: