Impact of Hyperarousal on Simple and Complex Cognitive Task Performance Among Insomnia Sufferers

Inclusion Criteria: * 21 to 80 years of age * Insomnia sufferers enrolled, will meet Research Diagnostic Criteria for insomnia disorder * score \> 14 on the Insomnia Severity Index * report insomnia for \> 3 months * have sleep difficulties \> 3 nights per week * score \< 3 on the Epworth Sleepiness Scale (ESS) * score \> 40 on the Hyperarousal Scale and report an inability to nap in the daytime * The normal sleepers enrolled will report general satisfaction with sleep and no sleep/wake complaints, score \< 10 on the ESS, score \< 35 on the Hyperarousal Scale, and deny a practice of routine daytime napping Exclusion Criteria: * sleep-disruptive medical condition (e.g., rheumatoid arthritis) * current major psychiatric (Axis I) condition on the basis of a Structured Clinical Interview for Psychiatric Disorders (SCID) * sedative hypnotic dependence and unwillingness/inability to abstain from these medications while in the study * use of anxiolytics, antidepressants, or any other psychotropic medication * an apnea/hypopnea index (AHI) \> 5 or a periodic limb movement-related arousal index \> 5 during on screening PSG that includes a full sleep montage to allow for detection/diagnosis of sleep-disordered breathing and Periodic Limb Movement Disorder (PLMD). * female participants who have tested positive on urine pregnancy tests or planing on becoming pregnant during the study * Additionally, self-described NS who meet criteria for any sleep disorder and those insomnia sufferer…