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Full-Text Articles in Medicine and Health Sciences
Examining Dual-Task Cognitive Processing From A Task-Set Perspective, Nicholas Surdel
Examining Dual-Task Cognitive Processing From A Task-Set Perspective, Nicholas Surdel
Dissertations, Theses, and Masters Projects
Despite decades of empirical investigation, there remains active debate about the limitations to dual-task processing. The primary aim of the present research was to determine the roles of attentional and response-set components of task-set in dual-task processing. Through three experiments, we explored the relationships between attentional- and response-set switching in the context of a classic dual-task paradigm. Experiment I (N = 68) validated our novel integration of a dual-task task-switching paradigm. Experiment II (N = 64) replicated and extended Experiment I by integrating a single task subsection of the procedure. Finally, Experiment III (N = 23) integrated electroencephalographic measures of …
Cellular And Synaptic Mechanisms That Underlie Eupnea And Sigh Rhythms For Breathing Behavior In Mice, Daniel Scott Borrus
Cellular And Synaptic Mechanisms That Underlie Eupnea And Sigh Rhythms For Breathing Behavior In Mice, Daniel Scott Borrus
Dissertations, Theses, and Masters Projects
Breathing is a lifelong activity that involves the coordination of several rhythmic behaviors. This dissertation investigates the neural origins of two of these breathing rhythms: eupnea and sighing. Eupnea, or regular unlabored breathing, occurs on the order of seconds and serves to drive the exchange of oxygen and carbon dioxide between the circulatory system and the environment. Sighs, deep breaths that are typically 2-5 times the volume of a eupneic breath, occur on the order of minutes and are critical in maintaining pulmonary function. Understanding how these rhythms are generated on a cellular and synaptic level is an essential step …
Physiological And Transcriptomic Analyses Of Inspiratory Rhythm- And Pattern- Generating Interneurons Of The Prebötzinger Complex In Mice, Prajkta Shashikant Kallurkar
Physiological And Transcriptomic Analyses Of Inspiratory Rhythm- And Pattern- Generating Interneurons Of The Prebötzinger Complex In Mice, Prajkta Shashikant Kallurkar
Dissertations, Theses, and Masters Projects
Breathing is a vital rhythmic behavior essential for life. The preBötzinger complex (preBötC) of the lower brainstem houses a cluster of interneurons that generate the respiratory rhythm in humans and all terrestrial mammals. Neurons of the preBötC produce rhythmic bursts of neural activity that drive inspiration, the only inexorable active phase of the breathing cycle (expiration is normally passive). preBötC interneurons that comprise the core inspiratory rhythm generator are derived from precursors that express the transcription factor developing brain homeobox 1 (Dbx1). Neurons in the preBötC derived from Dbx1-expressing progenitors (hereafter referred to as Dbx1 preBötC neurons) produce rhythmic bursts …