ATCT (PositScience; brainhq.com) is a computerized cognitive training
program that targets both low-level auditory perceptual processes
and higher order attention and working memory operations. The program
includes a variety of exercises aimed at training a range of
auditory-dependent abilities, including auditory tone discrimination,
speech syllable discrimination, and memory for verbal instructional sequences.
The present study utilized one of the most basic training exercises,
“Sound Sweeps”, an auditory frequency discrimination time-order
judgment task. In this exercise, participants were presented with pairs
of frequency-modulated sound “sweeps” and indicated whether they
perceived each sweep as becoming higher or lower in pitch