Effect of aging on the subjective magnitude of vibration

Verrillo, Ronald T.; Bolanowski, Stanley J.; Gescheider, George A.

doi:10.1080/0899022021000009161

Cited by 65 publications

(49 citation statements)

References 44 publications

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“…One of the major risk factors for falling in the elderly is decreased somatosensory function in the feet (Magnusson et al 1990a) which can be tested clinically by determining sensation from plantar cutaneous mechanoreceptors on the soles of the feet. Various reports have demonstrated that ageing decreases the function of the plantar mechanoreceptors (Cauna and Mannan 1958;Verrillo et al 2002). Accordingly, it has been found that clinical tests of plantar cutaneous sensation such as vibration perception and tactile sensitivity are aVected by ageing (Perry et al 2000).…”

Section: Introductionmentioning

confidence: 97%

The contribution of mechanoreceptive sensation on stability and adaptation in the young and elderly

et al. 2008

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The aim was to determine the contributions of foot mechanoreceptive sensation, vision and their interaction on postural stability during quiet stance, balance perturbations and adaptive adjustments. Postural stability was measured as anteroposterior torque variance in Young (n = 25, average age = 25.1 years) and Elderly subjects (n = 16, average age = 71.5 years) during repeated calf vibrations while standing with eyes open and closed. Sensation, recorded using vibration perception and tactile sensitivity, was poorer in elderly than young subjects. Sensation was of low importance for stability during quiet stance and the first 50 s of repeated vibrations, but was associated with stability during the last three 50 s periods of balance perturbations, suggesting that the mechanoreceptive sensation affected how well postural control could adapt to repeated balance perturbations. The findings suggest that clinicians should investigate whether patients with balance problems and poor adaptation have mechanoreceptive sensation deficits.

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Section: Introductionmentioning

confidence: 97%

The contribution of mechanoreceptive sensation on stability and adaptation in the young and elderly

et al. 2008

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“…Verrillo et al [23] also identified breaks in the slopes of magnitude estimation curves, demonstrating a change in the rate of increase in sensation above the threshold of the NP II channel (determined with a 0.008 cm 2 contactor). This suggested that the activity of more than one psychophysical channel contributed to the slope found by magnitude estimation.…”

Section: Experiments 2: Equivalent Comfort Contoursmentioning

confidence: 99%

“…The rate of growth in sensation with increasing magnitude has been determined using Stevens' power law (Stevens [20]), which describes the relationship between the psychophysical magnitude, , and the physical magnitude, , of a stimulus: where k is a constant, and the exponent n describes the rate of change of sensation, , al. [23] to explain steeper slopes in older subjects than in younger subjects at 250 Hz:…”

Section: Experiments 2: Equivalent Comfort Contoursmentioning

confidence: 99%

Magnitude-dependence of equivalent comfort contours for fore-and-aft, lateral and vertical hand-transmitted vibration

Morioka

Griffin

2006

Journal of Sound and Vibration

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“…The NPII channel responds to vibration at similar frequencies to the Pacinian channel (40 -400 Hz), but has lower sensitivity unless a small stimulus area is used (2,15). The mechanoreceptor for the NPII channel has not yet been identified neurophysiologically in humans, but may be similar in structure to Ruffini endings (39). The NPIII channel may have a lower threshold than other channels in the range 0.4 and 4 Hz and has Merkel discs as the mechanoreceptor.…”

mentioning

confidence: 97%

Reductions in finger blood flow in men and women induced by 125-Hz vibration: association with vibration perception thresholds

Yao

Griffin

2011

Journal of Applied Physiology

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Ye Y, Griffin MJ. Reductions in finger blood flow in men and women induced by 125-Hz vibration: association with vibration perception thresholds. J Appl Physiol 111: 1606 -1613, 2011. First published September 15, 2011 doi:10.1152/japplphysiol.00407.2011.-Vibration of one hand reduces blood flow in the exposed hand and in the contralateral hand not exposed to vibration, but the mechanisms involved are not understood. This study investigated whether vibration-induced reductions in finger blood flow are associated with vibrotactile perception thresholds mediated by the Pacinian channel and considered sex differences in both vibration thresholds and vibration-induced changes in digital circulation. With force and vibration applied to the thenar eminence of the right hand, finger blood flow and finger skin temperature were measured in the middle fingers of both hands at 30-s intervals during seven successive 4-min periods: 1) pre-exposure with no force or vibration, 2) pre-exposure with force, 3) vibration 1, 4) rest with force, 5) vibration 2, 6) postexposure with force, and 7) recovery with no force or vibration. A 2-N force was applied during periods 2-6 and 125-Hz vibration at 0.5 and 1.5 ms Ϫ2 root mean square (r.m.s.; unweighted) was applied during periods 3 and 5, respectively. Vibrotactile thresholds were measured at the thenar eminence of right hand using the same force, contact conditions, and vibration frequency. When the vibration magnitude was greater than individual vibration thresholds, changes in finger blood flow were correlated with thresholds (with both 0.5 and 1.5 ms Ϫ2 r.m.s. vibration): subjects with lower thresholds showed greater reductions in finger blood flow. Women had lower vibrotactile thresholds and showed greater vibration-induced reductions in finger blood flow. It is concluded that mechanoreceptors responsible for mediating vibration perception are involved in the vascular response to vibration.

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Effect of aging on the subjective magnitude of vibration

Cited by 65 publications

References 44 publications

The contribution of mechanoreceptive sensation on stability and adaptation in the young and elderly

The contribution of mechanoreceptive sensation on stability and adaptation in the young and elderly

Magnitude-dependence of equivalent comfort contours for fore-and-aft, lateral and vertical hand-transmitted vibration

Reductions in finger blood flow in men and women induced by 125-Hz vibration: association with vibration perception thresholds

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