Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
Sugar Consumption Alters Perception Of And Response To Stress In Undergraduate Students: Understanding The "Freshmen Fifteen", Katherine M Keever
Sugar Consumption Alters Perception Of And Response To Stress In Undergraduate Students: Understanding The "Freshmen Fifteen", Katherine M Keever
Honors Theses
Psychological stress is a common part in everyday life that directly affects the body through the nervous system and neuroendocrine hormones. A perceived stressor leads to the activation of the hypothalamic-pituitary-adrenal (HPA) axis, and the synthesis and release of the glucocorticoid hormone cortisol from the adrenal cortex. Studies have linked the release of cortisol during high-stress periods to an increased intake of sugary and fatty foods, consistent with a suspected glucocorticoid-metabolic-brain- negative pathway, with high sugar consumption leading to lower stress and subsequently cortisol levels. In this study, undergraduate students’ diets were supplemented with either a high sugar drink or …
Responses Of Dragonfly Visual Neurons Mdt3 And Dit3 To Near-Hit Looming Stimuli, Benjamin Goodman Shapiro
Responses Of Dragonfly Visual Neurons Mdt3 And Dit3 To Near-Hit Looming Stimuli, Benjamin Goodman Shapiro
Honors Theses
Dragonflies are known to have highly sophisticated visual processing systems, allowing precise flight control and incredibly accurate prey capture (Olberg et al., 2000). These processes are mediated by a group of neurons known as Target Selective Descending Neurons, or TSDNs. Of the TSDNs, MDT3 and DIT3 are known to respond to objects expanding into the animal’s field of view, otherwise known as looming objects. Through the use of intracellular electrical recording, we aimed to understand how these two neurons work together to scan the entire visual field, as well as how they respond to objects on a trajectory to miss …