Biological Psychology Commons^™

Effects Of Atomoxetine On Circadian Rhythms And Locomotor Activity, Rhiannon Ryder Crimmins

Cal Poly Humboldt theses and projects

Background: Attention deficit hyperactivity disorder (ADHD) is a common neurological disorder characterized by inattention, hyperactivity, and impulsive behavior. Many people with ADHD who are taking pharmacological treatments also report having sleep problems, and both children and adults tend to fall asleep later than neurotypical people. Since diagnosis and treatment of ADHD are on the rise, understanding how the disorder and common medications influence circadian rhythms is becoming more important. Zebrafish are a common animal model that have been shown to reliably represent features of many human disorders, including ADHD. Hypothesis: The specific hypotheses tested were: (H1) that a …

The Effect Of Increased Sleep On The Circadian Rhythm Of Salivary Cortisol Concentrations, Mariah Jacqueline Scott

Seton Hall University Dissertations and Theses (ETDs)

Cortisol is a salivary marker for the hypothalamic-pituitary-adrenal axis (HPA) component of the stress response. The activity of the HPA demonstrates a circadian rhythm. It is well known that sleep deprivation increases cortisol concentrations. In this study, we looked at the effect of an increase of one-hour sleep for one month on the circadian rhythm of the HPA.

Eight college subjects (n=8) collected saliva during their normal sleep wake cycle every 4 hours for 24 hours. Saliva collections were repeated after a month of increase of sleep by 1-hour. The subjects also completed demographic forms that asked for age, sex, …