Working memory is defined as an active short-term memory system crucial for temporary storage and processing of information. Many studies have shown the importance of training this ability to reduce risks of developing neurodegenerative disorders, since it allows daily activities to be performed more effectively. This study aimed to describe performances of one participant in a working memory training using a device called NEURUM. Scores for each session (13 in total) were analyzed using visual analysis. Results indicate stable performances across sessions with very mild patterns of improving.