The preliminary data indicate children are able to extend sleep. However, to date, sleep extension does not seem to impact inhibitory control. This could be due to the participants already having a sufficient amount of sleep. In the next few months, additional data will be collected to achieve the full sample of 15 participants. PSG will be scored to determine if the sleep extension altered SWA and theta activity. If the results show that sleep extension improves behavior, then sleep extension can potentially be used as an intervention to enhance cognitive functioning in children.
Once all data is collected, we expect that there will be a positive relationship between theta activity and inhibitory control at the baseline condition. In the sleep extension condition, theta activity will be reduced and inhibitory control will be greater, relative to the baseline condition. Thus, it is expected that sleep extension will have a strong effect on inhibitory control.
Additional data from our lab indicate that theta activity is elevated in children diagnosed with attention-deficit/hyperactivity disorder (ADHD). High amounts of theta activity are not beneficial to inhibitory control in this sample. Due to this, it is assumed by this study that there is an optimal of sleep extension. Further studies will take place to determine if sleep extension alter theta activity enough to improve inhibitory control in children diagnosed with ADHD.