Gregory Powell

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Although respiratory muscle motor units have been studied during natural breathing, simultaneous measures of muscle force have never been obtained. Tongue retractor muscles, such as the hyoglossus (HG), play an important role in swallowing, licking, chewing, breathing, and, in humans, speech. The HG is phasically recruited during the inspiratory phase of(More)
Developmental nicotine exposure (DNE) is associated with increased risk of cardiorespiratory, intellectual, and behavioral abnormalities in neonates, and is a risk factor for apnea of prematurity, altered arousal responses and Sudden Infant Death Syndrome. Alterations in nicotinic acetylcholine receptor signaling (nAChRs) after DNE lead to changes in(More)
Maternal smoking or use of other products containing nicotine during pregnancy can have significant adverse consequences for respiratory function in neonates. We have shown, in previous studies, that developmental nicotine exposure (DNE) in a model system compromises the normal function of respiratory circuits within the brainstem. The effects of DNE(More)
Forest tree breeders often use single-tree plots, rather than multiple-tree plots, to maximize the number of genotypes tested, increase precision of genetic predictions, and achieve greater genetic gains per unit of time. However, genetically improved individuals are deployed operationally on large tracts of land, as stands, more like multiple-tree plots.(More)
Smoothly graded muscle contractions depend in part on the precision and reliability of motoneuron action potential generation. Whether or not a motoneuron generates spikes precisely and reliably depends on both its intrinsic membrane properties and the nature of the synaptic input that it receives. Factors that perturb neuronal intrinsic properties and/or(More)
Course Objectives This course is designed for undergraduate students in natural resources and will prepare them ready for higher-level courses which are related to computation in the Davis College of Agriculture, Natural Resources, and Design. The students will be introduced to data acquisition, data manipulations, basic programming techniques, Internet(More)
  • Matthew, Lyon, Montgomery James, Lucas, Scotta, Mit Seth Lincoln +11 others
  • 2011
This paper describes the design and prototype implementation of a distributed radar simulator for MIT Lincoln Laboratory. This simulator is designed to test radar control software developed at the Laboratory by mimicking radar hardware and simulating radar returns from targets in a virtual environment. The team worked closely with Lincoln Laboratory staff(More)
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