Open Access. Powered by Scholars. Published by Universities.®
Systems and Integrative Physiology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
- Keyword
-
- Calorimetry (1)
- Deep brain stimulation (1)
- Energetics (1)
- Evolution (1)
- Heart rate (1)
-
- Isometric handgrip (1)
- Macroramphosus scolopax (1)
- Mecysmaucheniidae (1)
- Medial prefrontal cortex (1)
- Metabolism (1)
- Muscle (1)
- Orbitofrontal cortex (1)
- Parasympathetic (1)
- Parkinson's Disease (1)
- Power amplification (1)
- Reciprocal Inhibition (1)
- Sculpins (1)
- Sensory Electrical Stimulation (1)
- Spectroscopy (1)
- Spinal Excitability (1)
- Stomatopoda (1)
- Trap-jaw ants (1)
- Tremor Suppression (1)
- Whole-body (1)
Articles 1 - 4 of 4
Full-Text Articles in Systems and Integrative Physiology
Direct Electrical Stimulation Of Prefrontal Cortex Modulates The Transient Heart Rate Response To Exercise In Conscious Humans, Bartek Kulas
Direct Electrical Stimulation Of Prefrontal Cortex Modulates The Transient Heart Rate Response To Exercise In Conscious Humans, Bartek Kulas
Electronic Thesis and Dissertation Repository
Prefrontal cortical regions play an essential role in generating appropriate cardiovascular adjustments, particularly in cardio-vagally mediated heart rate (HR) responses to active tasks. Functional imaging studies provide correlational evidence that this region coordinates HR responses to exercise, however, direct experimental evidence of prefrontal cortical HR regulation in humans is not available. Seven persons with epilepsy implanted with intracranial electroencephalography (iEEG) completed 2-second isometric handgrip (IHG) contractions at no-stimulation (NO-STIM) or sham-stimulation (SHAM) conditions, and during direct electrical stimulation (STIM) of the orbitofrontal and medial prefrontal cortex. HR responses to IHG during NO-STIM and SHAM increased HR by Δ4.9±2.7 bpm, compared …
Link Between Muscle And Whole-Body Energetic Responses To Exercise, Christopher M.T. Hayden
Link Between Muscle And Whole-Body Energetic Responses To Exercise, Christopher M.T. Hayden
Masters Theses
Substantial evidence exists regarding how skeletal muscles use energy and how this affects muscular performance. What remains unclear is how characteristics of muscle energetics affect whole-body energetics during daily living, and what effects this may have on mobility. The goal of this study was to determine the associations between muscle and whole-body energetics including the relationships between: 1) muscle PCr depletion (∆PCr) in response to light intensity isotonic contractions and the oxygen deficit at the onset of a 30-min treadmill walk (30MTW), and, 2) muscle oxidative capacity and excess post-exercise oxygen consumption (EPOC; 30MTW), respiratory exchange ratio (RER; 30MTW), and …
Spinal Excitability Changes Following Sensory Electrical Stimulation Of The Forearm, Devin K. Box
Spinal Excitability Changes Following Sensory Electrical Stimulation Of The Forearm, Devin K. Box
Electronic Thesis and Dissertation Repository
Sensory electrical stimulation can be used to suppress tremor in Parkinson’s disease. This study investigated the central mechanism underlying this suppression in healthy participants. Reciprocal inhibition (RI) of the wrist flexors before and after a session of sensory electrical stimulation (SES) applied to the antagonistic extensor muscles was assessed using electromyography. It was hypothesized that a 15-minute session of SES, rated by participants as a 3 on a 0-10 pain scale, would produce an increase in RI. Seven of the 18 participants experienced an increase in RI at 0-5 minutes post stimulation, which returned to baseline at 10-15 minutes. The …
Power Amplification Strategies Across Animals, Rayhan Asif
Power Amplification Strategies Across Animals, Rayhan Asif
Williams Honors College, Honors Research Projects
Animals use muscles for movement, but some have evolved mechanisms to exceed maximum power used in a motion known as power amplification. In this literature review, I analyzed and compared the evolution of structures capable of power amplification between species. Structures capable of power amplification were broken down into the basic components of the engine, amplifier, and tool. The species analyzed were found to possess necessary structures for power amplification which were relatively similar to each other in morphology, but varied greatly in function. The ease with which these structures evolved was evaluated based on the amount of divergence which …