Connor Johnson

ORCID: 0000-0003-1853-8514
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About
Contact & Profiles
Research Areas
  • Heart Rate Variability and Autonomic Control
  • Geochemistry and Geologic Mapping
  • COVID-19 Clinical Research Studies
  • Sleep and Work-Related Fatigue
  • Cardiovascular and exercise physiology
  • SARS-CoV-2 and COVID-19 Research
  • Geological and Geochemical Analysis
  • Bacillus and Francisella bacterial research
  • earthquake and tectonic studies
  • Mining and Resource Management
  • Microbial Metabolic Engineering and Bioproduction
  • Muscle activation and electromyography studies
  • SARS-CoV-2 detection and testing
  • EEG and Brain-Computer Interfaces
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • CRISPR and Genetic Engineering
  • Impact of Light on Environment and Health
  • Fibromyalgia and Chronic Fatigue Syndrome Research
  • Neural and Behavioral Psychology Studies
  • Functional Brain Connectivity Studies
  • Optical Imaging and Spectroscopy Techniques
  • Spatial Cognition and Navigation
  • Technology and Human Factors in Education and Health
  • Human-Automation Interaction and Safety

The University of Texas at Austin
1990-2025

Texas A&M University
2020-2022

ORCID
2022

Olivine‐plagioclase coronas in metagabbros from the Adirondack Mountains, New York (USA) are spatially well‐organized reaction textures consisting most commonly of sequential layers orthopyroxene, clinopyroxene, plagioclase, and garnet; characteristic diffusion‐controlled kinetics. Although similar have been interpreted by previous workers terms an isochemical steady‐state diffusion model, petrographical relations material‐balance calculations establish that cannot be treated as do not form...

10.1111/j.1525-1314.1990.tb00496.x article EN Journal of Metamorphic Geology 1990-11-01

<title>Abstract</title> Biocatalysts are championed for their exquisite stereochemistry, but slow chromatographic separations necessary to measure enantiomeric excess can bottleneck development. To overcome this limitation, we generate enantioselective transcription factors (eTFs) that convert enantiomer-specific analyte concentrations into programmable gene expression outputs. Using a massively parallel reporter assay, dose-response curves over 300,000 factor variants in response...

10.21203/rs.3.rs-5861295/v1 preprint EN cc-by Research Square (Research Square) 2025-01-30

Objective We examine the spatiotemporal dynamics of neural activity and its correlates in heart rate variability (HR/HRV) during a fatiguing visuospatial working memory task. Background The physiological drivers fatigue are complex, coupled, poorly understood. Investigations that combine fidelity indices field-readiness measures can facilitate measurements states operational settings. Method Sixteen healthy adults, balanced by sex, completed 60-minute Changes task performance, subjective...

10.1177/00187208221094900 article EN Human Factors The Journal of the Human Factors and Ergonomics Society 2022-05-14

Summary The worldwide spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has led to the repeated emergence variants concern. Omicron variant two dominant sub-lineages, BA.1 and BA.2, each with unprecedented numbers nonsynonymous indel spike protein mutations: 33 29, respectively. Some these mutations individually increase transmissibility enhance immune evasion, but their interactions within mutational background is unknown. We characterize molecular effects all on...

10.1101/2022.04.18.488614 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2022-04-18

Type 1 diabetes (T1D) is associated with reduced muscular strength and greater muscle fatigability. Along changes in mechanisms, T1D also linked to structural the brain. However, central mechanisms of fatigue T1D, sex differences, remain unknown. The aim this study was determine impact handgrip males females examine T1D-related differences neural activation functional connectivity patterns. Forty two adults, balanced by status (control vs T1D) (male female), performed submaximal isometric...

10.3389/fnhum.2020.564969 article EN cc-by Frontiers in Human Neuroscience 2020-11-09

To quantify mental effort and track neurophysiological changes due to powered-robotic-exoskeleton based gait training objectively, we investigated the feasibility of using functional connectivity neural efficiency metrics obtained from near infrared spectroscopy monitor during powered robotic exoskeleton-based in two stroke spinal cord injury (SCI) patients. Increased between different brain regions were associated with improved performance patients but indicated increased workload no SCI...

10.1109/smc42975.2020.9283238 article EN 2022 IEEE International Conference on Systems, Man, and Cybernetics (SMC) 2020-10-11

Disorientation has been identified as one of the leading causes firefighter injuries and fatalities. In search rescue tasks, firefighters have to build up a general understanding an unfamiliar space with limited time information at hand. These two factors together lead firefighters' insufficient development spatial knowledge that could induce disorientation. Therefore, there is pressing need better understand how why different types information, including landmark, route, survey affect...

10.1061/(asce)cp.1943-5487.0001031 article EN Journal of Computing in Civil Engineering 2022-04-30
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