The conventional tuning fork as a quantitative tool for vibration threshold

Alanazy, Mohammed H.; Alfurayh, Nuha A.; Almweisheer, Shaza N.; Aljafen, Bandar N.; Muayqil, Taim

doi:10.1002/mus.25680

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…As seen in other sensory and neuropsychological assessments [11][12][13][14], performance declined with older age and with less education. Only the oldest age group demonstrated a decline in performance, it is possible that decline in the number of nerve fascicles or functional receptors and reductions in central processing speed may be responsible [11][12][13][14]. Similarly, lower education level was associated with lower performance, as is demonstrated in most neuropsychological assessments [14].…”

Section: Discussionmentioning

confidence: 95%

The Role of Demographic and Symbolic Features in Clinical Arabic Graphesthesia Testing

et al. 2018

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Objective: Graphesthesia is the ability to identify a symbol traced on the skin. Agraphesthesia is the impairment in this ability and is encountered in various disorders of the somatosensory pathways. We aimed to describe the demographic and symbolic features that influence correct recognition of Arabic graphesthesia stimuli in healthy Arabic individuals. Methods: Participants were community dwelling healthy Arabian individuals of 18 years of age or older. Demographic information collected included age, gender, years of education, and hand dominance. Assessment was conducted using a list of 15 symbols drawn in a single stroke while the hands were obscured from vision. Symbols were current letters and numbers from Arabic script. Each participant was exposed to 60 attempts in total in a random order and correct responses were counted. Results: A total of 126 male and female participants were included. On average, men scored less than women (p < 0.0001), older subjects scored less than those below 30 years of age (p = 0.03), and higher years of education resulted in higher scores (p = 0.047) while handedness did not significantly associate with performance. More correct responses were seen for numerical symbols than letters (p < 0.0001). Symbols with unique script were more likely to be correctly identified. Conclusions: Number and letter symbols traced on the palm are identified with varying levels of accuracy when conducted according to our method. Female gender, younger age, and higher education are associated with higher scores. Among the many potential symbolic properties that contribute to recognition, a numeric symbol with a unique script is most likely to be correctly identified.

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Section: Discussionmentioning

confidence: 95%

The Role of Demographic and Symbolic Features in Clinical Arabic Graphesthesia Testing

et al. 2018

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“…Cutaneous vibration sensation was evaluated by using a 128 Hz tuning fork (Rydel-Seiffer graduated tuning fork, Martin Tuttlingen, Germany) at the first metatarsal head and medial malleolus bilaterally (McLaughlin et al, 2005;Citaker et al, 2011). This is a reliable and valid clinical tool that is used to evaluate vibration perception impairments (Alanazy et al, 2018;Marcuzzi et al, 2019). The duration of the perceived vibration stimulus (average of three trials) for each site was recorded.…”

Section: Somatosensory Functionmentioning

confidence: 99%

Foot and Ankle Somatosensory Deficits Affect Balance and Motor Function in Children With Cerebral Palsy

Zarkou

Lee

Prosser

et al. 2020

Front. Hum. Neurosci.

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“…It is possible that the clinical measurements lack the resolution to demonstrate continuous relationships. For example, it has been shown that the relationship between the tuning fork vibration time and age only degrades about 5 s from the age of 20–60 on average (Alanazy, Alfurayh, Almweisheer, Aljafen, & Muayqil, ). It is therefore unreasonable to expect to see this relationship in a small cohort with a limited age range, and when tuning fork time is summarized into 5‐s blocks.…”

Section: Discussionmentioning

confidence: 99%

Vibrotactile sensitivity of patients with HIV‐related sensory neuropathy: An exploratory study

et al. 2018

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BackgroundHIV‐associated distal polyneuropathy (HIV‐PN) affects large and small sensory nerve fibers and can cause tactile insensitivity. This exploratory study forms part of an effort to apply subsensory electrical nerve stimulation (SENS) to improve tactile sensitivity of patients with HIV‐PN. This work presented an opportunity to use a robust protocol to quantitatively describe the vibrotactile sensitivity of individuals with HIV‐PN on effective antiretroviral therapy (ART) and correlate these findings with commonly used clinical vibration testing and scoring grades.MethodsThe vibration perception thresholds (VPTs) of 20 patients with HIV‐PN at three vibration frequencies (25, 50, and 128 Hz) were measured. We compare the vibration perception threshold (VPT) outcomes to an age‐ and gender‐matched control cohort. We further correlated VPT findings with 128 Hz tuning fork (TF) assessments performed on the HIV‐PN participants, accrued as part of a larger study. HIV‐PN was defined as having at least one distal symmetrical neuropathic sign, although 18 of 20 had at least two neuropathic signs.ConclusionsHIV‐PN participants were found to have lower VPT sensitivity than controls for all three vibration frequencies, and VPT was more sensitive at higher vibration frequencies for both HIV‐PN and controls. VPT sensitivity was reduced with older age. Years on ART was correlated with VPT‐25 Hz but not with VPT in general. Notably, VPT sensitivity did not correlate with the clinically used 128 Hz TF severity grades. Outcomes of tests for interaction with vibration frequency suggest that HIV‐PN pathology does not affect all mechanoreceptors similarly.

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The conventional tuning fork as a quantitative tool for vibration threshold

Cited by 10 publications

References 18 publications

The Role of Demographic and Symbolic Features in Clinical Arabic Graphesthesia Testing

The Role of Demographic and Symbolic Features in Clinical Arabic Graphesthesia Testing

Foot and Ankle Somatosensory Deficits Affect Balance and Motor Function in Children With Cerebral Palsy

Vibrotactile sensitivity of patients with HIV‐related sensory neuropathy: An exploratory study

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