TABLE 3.

Description and rationale of second level contrasts.

Between-subject effects		Between conditions	Rationale
Active vs. sham	Primary contrasts	2-Back: Post-intervention > Baseline	Enabled assessment of connectivity changes on the 2-Back from baseline to post-intervention
		0-Back: Post-intervention > Baseline	Enabled assessment of changes in connectivity from baseline to post-intervention on the 0-Back task
	Control contrasts	2-Back: Baseline > Rest	Control contrast to determine if baseline differences existed on 2-Back between groups
		0-Back: Baseline > Rest	Control contrast to determine if baseline differences existed on the 0-Back between groups