Generalizing treatment outcomes to externalizing behaviors for Latino/a adolescents with substance use disorders: A secondary analysis.

OBJECTIVE: Substance use treatment for adolescents may decrease not only substance use, but also other related outcomes such as externalizing behaviors. Although positively correlated to substance use in youth, externalizing behaviors are not commonly measured as outcomes in the context of substance use treatment. This study seeks to generalize the outcomes of substance use treatment to externalizing behaviors in a sample of Latino/a adolescents who participated in a randomized clinical trial. METHOD: Secondary data analysis was conducted using a longitudinal mixed model to test the outcomes of two versions of a cognitive-behavioral substance use treatment (i.e., standard and culturally accommodated) on externalizing behaviors. Participants were Latino/a adolescents (N = 70) diagnosed with a substance use disorder randomized into one of the two study conditions. RESULTS: The results indicated that Latino/a adolescents in both treatment conditions significantly decreased in self-reported externalizing behaviors from pretreatment to 12-months posttreatment. CONCLUSIONS: Implications from this study suggest that participation in substance use treatment for Latino/a adolescents may also generalize to other outcomes such as externalizing behaviors. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Cortical Networks for Correcting Errors in Sensorimotor Synchronization Depend on the Direction of Asynchrony.

Recent work provides clues that different cortical mechanisms may be employed when correcting for errors in sensorimotor synchronization that increase tap-tone asynchrony compared with those that decrease it. The authors tested this hypothesis by recording 64-channel electroencephalography while participants synchronized with an auditory metronome. We systematically introduced positive and negative phase-shift perturbations that were either liminal (10%) and subliminal (3%). We used a distributed source modeling approach to evaluate oscillatory activity and connectivity of discrete cortical sources. Three key findings support our hypothesis. First was a theta band response indicative of error detection and top-down control observed in frontomedial presupplementary motor area (pre-SMA) and anterior cingulate for liminal positive perturbations. Second was an increase in theta band coupling between the SMA and contralateral motor cortex exclusively for positive perturbations suggesting a top-down modulation of motor parameters. Third, when compared with other conditions, liminal positive perturbations result in an increase in postmovement beta rebound within contralateral primary motor cortex. The authors propose that frontomedial motor areas exert a top-down inhibitory influence over the primary motor cortex to effectively lengthen tap intervals in response to lengthening tap-tone asynchronies.