  Visual working memory (VWM) allows us to actively store, update and
manipulate visual information surrounding us. While the underlying neural
mechanisms of VWM remain unclear, contralateral delay activity (CDA), a
sustained negativity over the hemisphere contralateral to the positions of
visual items to be remembered, is often used to study VWM. To investigate if
the CDA is a robust neural correlate for VWM tasks, we reproduced eight
CDA-related studies with a publicly accessible EEG dataset. We used the raw EEG
data from these eight studies and analyzed all of them with the same basic
pipeline to extract CDA. We were able to reproduce the results from all the
studies and show that with a basic automated EEG pipeline we can extract a
clear CDA signal. We share insights from the trends observed across the studies
and raise some questions about the CDA decay and the CDA during the recall
phase, which surprisingly, none of the eight studies did address. Finally, we
also provide reproducibility recommendations based on our experience and
challenges in reproducing these studies.
