Rebecca A. Johnson

ORCID: 0000-0003-4031-1762
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About
Contact & Profiles
Research Areas
  • Veterinary Pharmacology and Anesthesia
  • Neuroscience of respiration and sleep
  • Spinal Cord Injury Research
  • Anesthesia and Sedative Agents
  • Anesthesia and Pain Management
  • Respiratory Support and Mechanisms
  • Renal function and acid-base balance
  • Hemodynamic Monitoring and Therapy
  • Veterinary Equine Medical Research
  • Spinal Dysraphism and Malformations
  • Cardiovascular Conditions and Treatments
  • Neurogenesis and neuroplasticity mechanisms
  • Advanced MRI Techniques and Applications
  • Pain Mechanisms and Treatments
  • Neurogenetic and Muscular Disorders Research
  • Voice and Speech Disorders
  • Cardiac Imaging and Diagnostics
  • Amyotrophic Lateral Sclerosis Research
  • Veterinary Orthopedics and Neurology
  • High Altitude and Hypoxia
  • Human-Animal Interaction Studies
  • Heart Rate Variability and Autonomic Control
  • Pediatric Pain Management Techniques
  • Gastrointestinal motility and disorders
  • Multiple Sclerosis Research Studies

University of Wisconsin–Madison
2014-2025

Boston University
2020-2024

Google (United States)
2024

Royal Berkshire NHS Foundation Trust
2023

London South Bank University
2020

University of Missouri
2010

Human Media
2010

Michigan State University
1998

University of Iowa
1989-1990

Temperature regulation in dogs is significantly impaired during general anesthesia. Glabrous skin on paws may facilitate thermoregulation from this area and a potential target for interventions attenuating hypothermia. This pilot study aimed to compare efficacy of an innovative warming device placed the front (AVAcore; AVA), with no methods (NONE) conventional truncal (CONV; circulating water blanket/forced air warmer) rectal temperature anesthetic recovery times. Dogs were premedicated...

10.1371/journal.pone.0317997 article EN cc-by PLoS ONE 2025-01-30

Objective: The objective of this study was to examine the relationship between laryngeal aerodynamics, acoustics, and hypernasality in children with cleft palate or without lip (CP ± L). Method: This used a prospectively performed cross-sectional design. Fifty-six ages 6 17 years CP L participated ( M age = 11.7, SD 3.4; male 32, female 24). Children were separated into four groups based on auditory-perceptual ratings made using Cleft Audit Protocol for Speech-Augmented-Americleft...

10.1044/2024_jslhr-24-00763 article EN Journal of Speech Language and Hearing Research 2025-02-28

Abstract Objective To compare mask anesthesia induction and recovery characteristics between 2 inhalant anesthetic agents: isoflurane sevoflurane. Animals 16 clinically normal, young adult Beagles. Procedure Using a cross-over design, dogs were randomly selected to receive sevoflurane or via face circle system. Vaporizer setting concentrations increased in step-wise, equal minimum alveolar (MAC) for each until the vaporizer of 2.6% 4.8% (2 MAC) was reached. Concentration kept constant dog...

10.2460/ajvr.1998.59.04.478 article EN American Journal of Veterinary Research 1998-04-01

The purpose of this study was to examine the influence exercise-induced laryngeal obstruction (EILO) on adolescents.

10.1044/2024_ajslp-23-00296 article EN American Journal of Speech-Language Pathology 2024-05-10

Although neurotrophic factors have been implicated in several forms of neuroplasticity, little is known concerning their potential role spinal plasticity. Cervical dorsal rhizotomy (CDR) enhances serotonin terminal density near (spinal) phrenic motoneurons and serotonin-dependent long-term facilitation motor output (Kinkead et al., 1998). We tested the hypothesis that selected change a manner consistent with an involvement this model Brain-derived factor (BDNF), neurotrophin-3 (NT-3), glial...

10.1523/jneurosci.20-10-j0005.2000 article EN cc-by-nc-sa Journal of Neuroscience 2000-05-15

Background:Individuals with Parkinson's disease (PD) experience significant vocal communication deficits. Findings in the Pink1–/– rat model of early-onset PD suggest that ultrasonic is impaired early, progressively worsens prior to nigrostriatal dopamine depletion, and assoc iated loss locus coeruleus neurons, brainstem α-synuclein, larynx pathology. Individuals also demonstrate ventilatory deficits altered sensory processing, which may contribute Objective:The central hypothesis are...

10.3233/jpd-191853 article EN Journal of Parkinson s Disease 2020-02-14

Purpose To develop and demonstrate a breathheld 3D radial ultrashort echo time (UTE) acquisition to visualize co‐registered lung perfusion vascular structure. Materials Methods Nine healthy dogs were scanned twice at 3 Tesla (T). Contrast‐enhanced pulmonary scans acquired with temporally interleaved three‐dimensional (3D) UTE (TE = 0.08 ms) sequence in breathhold (1 s frames over 33 breathhold). The volume was reconstructed into time‐resolved datasets, composite structure dataset. For...

10.1002/jmri.24520 article EN Journal of Magnetic Resonance Imaging 2013-12-20

Background: In COVID-19 patients, lymphocyte-CRP ratio (LCR) is a promising biomarker for predicting adverse clinical outcomes. How well LCR performs compared to conventional inflammatory markers prognosticating patients remains unclear, which hinders the translation of this novel biomarker. Methods: cohort inpatients, we characterised applicability by comparing its prognostic value against inpatient mortality and composite mortality, invasive/non-invasive ventilation intensive care unit...

10.3390/jpm13060909 article EN Journal of Personalized Medicine 2023-05-29

Canine coronary artery angiography (CTA) was performed in four anesthetized healthy dogs using 64‐multidetector computed tomography. Esmolol, a β‐1 adrenergic receptor antagonist, and sodium nitroprusside, an arteriolar venous dilator, were administered to enhance visualization of the arteries by reducing heart rate creating vasodilation. The left main with its three branches right visualized subdivided 13 segments for evaluation. Optimal reconstruction interval, expressed as percentage...

10.1111/j.1740-8261.2011.01826.x article EN Veterinary Radiology & Ultrasound 2011-04-26

Abstract OBJECTIVE To determine whether previous corrective upper airway surgery in brachycephalic dogs would decrease perianesthetic complications subsequent anesthetic events. ANIMALS 45 client-owned dogs. PROCEDURES Brachycephalic undergoing any combination of staphylectomy, nasal alaplasty, or laryngeal sacculectomy that were anesthetized at a later date for additional surgical procedures imaging from August 2, 2007, to February 8, 2019, had their medical records reviewed during both...

10.2460/javma.257.7.744 article EN Journal of the American Veterinary Medical Association 2020-09-21

Johnson, Stephen M., Rebecca A. and Gordon S. Mitchell. Hypoxia, temperature, pH/CO 2 effects on respiratory discharge from a turtle brain stem preparation. J. Appl. Physiol. 84(2): 649–660, 1998.—An in vitro preparation adult turtles ( Chrysemys picta) was used to examine the of anoxia increased temperature respiration-related motor output. At pH ∼7.45, hypoglossal (XII) nerve roots produced patterns rhythmic bursts (peaks) (0.74 ± 0.07 peaks/min, 10.0 0.6 s duration) that were...

10.1152/jappl.1998.84.2.649 article EN Journal of Applied Physiology 1998-02-01

Cross‐sectional imaging of the heart utilizing computed tomography and magnetic resonance (MRI) has been shown to be superior for evaluation cardiac morphology systolic function in humans compared echocardiography. The purpose this prospective study was test effects two different anesthetic protocols on measurements 10 healthy beagle dogs using 64‐multidetector row tomographic angiography (64‐MDCTA), 3T standard awake Both used propofol induction isoflourane maintenance. In addition,...

10.1111/vru.12269 article EN Veterinary Radiology & Ultrasound 2015-06-16
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