Danielle Clark University of Michigan - Ann Arbor, Charlotte Thill University of Michigan - Ann Arbor, Kayla Clark University of Michigan - Ann Arbor, Colleen Frank University of Michigan - Ann Arbor, Tiffany Jantz-DesOrmeaux University of Michigan - Ann Arbor
Faculty Sponsor(s): Patricia Reuter-Lorenz University of Michigan - Ann ArborThe function of human memory prohibits us from remembering all the information we encounter throughout each day, retaining instead, just a proportion. Previous research has found that working memory (WM) training is an effective memory intervention and may potentially be enhanced through the use of transcranial direct current stimulation (tDCS). This study aimed to determine if WM training and tDCS improved Value-Directed Memory (VDM), a strategy that promotes memory for a subset of information based on associated value, measured by a verbal short-term maintenance task where the targets have different assigned value cues. Performance on the VDM task was assessed using the “selectivity index”, a score that measured how well participants used the value cues to remember items by calculating how close their scores were to optimal performance. We hypothesized that because our WM training targeted short-term maintenance of verbal information, performance on the VDM task would be improved after seven days of training and this improvement may be augmented by the addition of tDCS. Participants (n=21) were randomly assigned to receive active tDCS and perform WM training (n = 7), receive sham tDCS and perform WM training, (n = 7) or serve as control participants receiving no tDCS nor training (n = 7). We found no effect of training nor tDCS on VDM performance. However, we did replicate a previous VDM effect such that participants used value cues more efficiently when the number of words in a list was within their WM capacity.
When & Where
Irwin Library Lower Level