Digital Commons Network^™

Behaviorally Induced Insufficient Sleep Syndrome And Insomnia: Prevalence And Relationship To Depression In College Students, Allison Baylor

Theses and Dissertations

Background: College students are at increased risk for general sleep issues as well as specific disorders, including Behaviorally Induced Insufficient Sleep Syndrome (BISS) and insomnia. These disorders can have deleterious daytime consequences, which can be compounded by exacerbating depression. The present study aims to establish college prevalence of BISS/insomnia, to characterize sleep characteristics in this sample, and to compare depression across BISS/insomnia.

Methods: Data from a college risk behaviors and health study (n=989) was used. Insomnia and BISS were defined as mutually exclusive disorders, using ICD-10/DSM-5 criteria, and Pittsburg Sleep Quality Index items.

Results: Overall, the results of this study …

A Neural Circuit Of Appetite Control In C. Elegans, Kristen C. Davis

Theses and Dissertations

Feeding behavior and its associated neural circuitry is complex and intricate in mammalian systems, however, a simple model organism, such as C. elegans provides a more basic approach to understand factors and molecules involved. The fruit-dwelling nematode provides a unique set of resources; it only consists of 959 cells, 302 of which are neurons. In addition, each neuron’s connectivity and position within the worm is known and consistent between animals. Conservation of neurotransmitters and biochemical processes add to this impressive list. These resources provide an excellent background to address feeding behavior and the neural structures governing it.

Feeding behavior in …

Pathways Linking Sleep Timing To Obesity In Midlife Women, Dana R. Schreiber

Theses and Dissertations

Midlife women are vulnerable to developing obesity. Both sleep timing and negative emotion are risk factors, yet limited research has explored their role on weight outcomes in this population. The current investigation explored the association of sleep timing (i.e., mean sleep time, sleep time variability) and obesity (i.e., BMI, waist circumference) in midlife women, considering emotional pathways (i.e., depressive symptoms, anger) that might mediate this association. PROCESS parallel mediation models assessed direct and indirect pathways. In follow-up analyses, sleep duration was explored as an indirect pathway linking sleep timing to obesity. Results demonstrated that sleep timing does not directly predict …