Interestingly, a different pattern emerged for the APS improvement
metrics, which were only associated with verbal memory performance
at baseline. Although the small and nonsignificant correlations between
APS improvement and attention, working memory, and executive func-
tioning partially contradicted our predictions, our findings nevertheless
suggest that the Sound Sweeps auditory frequency discrimination exer-
cise may indeed engage components of the frontotemporal verbal
learning network targeted by the broader ATCT intervention (Fisher
et al., 2009, 2010, 2015; Vinogradov et al., 2012).