Age differences in target detection and interference resolution in working memory: An event-related potential study.

Understanding changes in mental processes in the later stages of life is an important step in equipping older Canadians with the personal skills and supportive environment required to maximize independence and dignity.  The focus of this research was to identify how and why mental distractions can interfere with decision making. In this research, a group of healthy older adults was invited to the research lab in order to test both their working memory ability and their naturally occurring electrical brain activity (i.e. EEG).

We found a specific alteration in older adults' memory ability and brain activity when confronted with distractions to memory.  This research will allow for a better understanding of one of several precise mechanisms of cognitive change later in life. Identifying such specific mechanisms also opens avenues for medical, lifestyle, and environmental interventions for maximizing older adults' ability to effectively carry out the tasks of everyday life.

The scientific training that William received during this project was important because he would like to pair his skills in basic research on cognitive aging with applied research that investigates lifestyle factors (e.g., cardiovascular fitness) associated with preserved mental health late in life. William is completing his PhD at Brock University and plans to complete a post-doctoral fellowship either in Canada or abroad. He wants to continue his work at a world-class research institution specializing in basic and applied research in human development and aging, such as the Rotman Institute in Toronto or the Max Planck Institute in Germany.