Publications by authors named "Gary P Jacobson"
Article Synopsis
- Traumatic brain injury (TBI) is a significant cause of mortality and disability in the U.S., and the peripheral vestibular system may be particularly at risk for damage in those with TBI.
- A study utilized cervical and ocular vestibular evoked myogenic potentials (VEMPs) and video head impulse tests (vHIT) to assess vestibular function and quality of life among individuals with chronic moderate-severe TBI compared to non-injured participants.
- Results indicated that a high percentage (63%) of TBI patients exhibited abnormal VEMP responses and reported vestibular symptoms, with many indicating these symptoms adversely affected their quality of life, underscoring the importance of vestibular testing for effective rehabilitation.
Article Synopsis
- Dizziness is a common reason for medical visits, and many patients may experience more than one vestibular disorder at the same time, affecting both diagnosis and treatment.
- The study involved analyzing data from 617 patients who completed a dizziness symptom profile before receiving vestibular function testing in a specialized clinic.
- Results indicated that there was a 42% chance that patients reported symptoms that didn't align with any known vestibular disorder, highlighting the complexity of diagnosing these conditions.
Introduction: The masseter vestibular evoked myogenic potential (mVEMP) is a bilaterally generated, electromyographically (EMG)-mediated response innervated by the trigeminal nerve. The purpose of the present investigation was to 1) determine whether subjects could accurately achieve and maintain a range of EMG target levels, 2) to examine the effects of varied EMG levels on the latencies and amplitudes of the mVEMP, and 3) to investigate the degree of side-to-side asymmetry and any effects of EMG activation.
Methods: Subjects were nine neurologically and otologically normal young adults.
Objective: The purpose of this investigation was to determine the relationship between the horizontal semicircular canal video head impulse test (hvHIT) and the caloric test in a sample of school-age children evaluated due to complaints of dizziness or imbalance. In adults, these two tests provide different but complementary information regarding vestibular function and/or pathology. However, the most common causes of vestibular loss in children are different than those in adults, and it is not clear how these two tests of horizontal semicircular canal function are related in a pediatric population.
View Article and Find Full Text PDFBackground: We describe herein the case of a patient whose primary complaints were episodic vertigo and "depersonalization," a sensation of detachment from his own body.
Purpose: This case study aims to further clinical knowledge and insight into the clinical evaluation of vertiginous patients with complaints of depersonalization.
Research Design: This is a case study.
Objectives: This investigation was conducted to measure the test-retest reliability of the Dizziness Symptom Profile (DSP). The DSP was developed to assist primary care providers, general otolaryngologists, and other health care providers in the development of a differential diagnosis for patients who present with dizziness, vertigo, or unsteadiness. The DSP yields a score ranging from 0 to 100% for each of 7 subscales.
View Article and Find Full Text PDFPurpose The purpose of the current investigation was to determine the interrelations among vestibular disorders from a data set generated from the patient perspective as compared to previous data generated from the physician's perspective. Method The data for the current investigation originated from a previously published study describing the development of the Dizziness Symptom Profile (DSP; Jacobson et al., 2019).
View Article and Find Full Text PDFPurpose: Vestibular impairments have been associated with a variety of cognitive deficits, most notably deficits in visuo-spatial memory. The Neuropsychological Vertigo Inventory (NVI) was developed to measure self-reported cognitive deficits in patients with dizziness and/or vertigo. The original French language version of the NVI includes 28 items and 7 subscales.
View Article and Find Full Text PDFPurpose The purpose of this project was to explore the association between the perception of motion during caloric testing and two tasks associated with central vestibular processing: postural stability and visuospatial memory. Method This was a prospective study of 25 patients who were found to have nonvestibular etiologies of their symptoms and normal vestibular function test results and who underwent caloric testing with a mean maximum slow phase eye velocity for each irrigation of 15° or greater. Following each caloric irrigation, patients were asked whether they had any sensation of movement.
View Article and Find Full Text PDFPurpose The purpose of the investigation was to determine whether the "belly-tendon" electrode derivation produced ocular vestibular evoked myogenic potentials (oVEMPs) in children that were superior to those recorded with the infraorbital-chin electrode derivation. Method This was a prospective observational study using a sample of convenience at a tertiary care medical center. Subjects were 13 children between the ages of 5 and 12 years.
View Article and Find Full Text PDFObjective: The Dizziness Handicap Inventory (DHI) is a 25-item self-report questionnaire developed to measure the disabling and handicapping impact of dizziness. The present investigation was conducted in an effort to re-assess the factor structure of the DHI.
Study Design: Retrospective study.