Age-related changes in tactile spatial resolution from 6 to 16 years old

@article{Bleyenheuft2006AgerelatedCI,
  title={Age-related changes in tactile spatial resolution from 6 to 16 years old},
  author={Yannick Bleyenheuft and Caroline Cols and Carlyne Arnould and Jean-Louis Thonnard},
  journal={Somatosensory \& Motor Research},
  year={2006},
  volume={23},
  pages={83 - 87}
}
The aim of this study was to determine age-related changes in tactile spatial resolution from 6 to 16 years old. Two hundred and twenty-two healthy children (105 boys and 117 girls) were assessed. The tactile spatial resolution threshold was determined using a classic set of JVP domes with a procedure adapted for children. Preadolescence appears to be an important step in tactile spatial resolution since children aged between 6 and 9 years old had a worse tactile spatial resolution than older… 
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References

SHOWING 1-10 OF 37 REFERENCES
Tactile spatial acuity in elderly persons: assessment with grating domes and relationship with manual dexterity
TLDR
The strong relationship between grating resolution thresholds and dexterity scores indicates that an impaired spatial acuity at the fingertips may translate into great difficulties in tasks requiring fine manipulations in older adults.
Tactile spatial acuity and roughness discrimination: Impairments due to aging and Parkinson's disease
TLDR
It is concluded that Parkinson's disease significantly impairs performance on these tactile tasks, including tactually discriminating grating roughness and difference limens.
The relation of tactile thresholds to histology in the fingers of elderly people.
  • M. F. Bruce
  • Psychology
    Journal of neurology, neurosurgery, and psychiatry
  • 1980
TLDR
Touch thresholds in a group of elderly people were determined for three sites on the little finger and an age-associated reduction in the number of Meissner corpuscles was observed, but it is suggested that this may reflect a general reduction in peripheral innervation.
Late Maturation of Visual Hyperacuity
TLDR
The results suggest that adultlike vernier hyperacuity is not limited by spatial resolution or sensitivity of small receptive fields, but rather that the limitation is imposed by higher-level processing.
Fingertip skin conformance accounts, in part, for differences in tactile spatial acuity in young subjects, but not for the decline in spatial acuity with aging
TLDR
Skin conformance cannot account for the loss of spatial acuity reported in earlier studies and confirmed in this study, and it is inferred that the loss must be neural in origin.
The limit of tactile spatial resolution in humans
TLDR
The grating orientation discrimination task provides a stable, reliable measure of the human capacity for spatial resolution, and psychophysical thresholds for tactile spatial resolution are obtained from 15 normal, young adult subjects over seven test sessions.
Spatial acuity of the body surface over the life span.
TLDR
The main finding was that aging is much harder on some body regions than on others, and the hands and feet turned out to be far more vulnerable than the more central regions, including the very acute lip and tongue.
Changes in tactile spatial discrimination and cutaneous coding properties by skin hydration in the elderly.
TLDR
Partial restoration of tactile spatial acuity after hydration appears to be due to both a softening of the stratum corneum permitting better localization of the stimulus and a weaker transfer of the stimuli toward the sensory receptors.
Tactile spatial resolution in blind Braille readers
Objective: To determine if blind people have heightened tactile spatial acuity. Background: Recently, studies using magnetic source imaging and somatosensory evoked potentials have shown that the
Tactile Acuity is Enhanced in Blindness
TLDR
Compared the passive tactile acuity of blind and sighted subjects on a fully automated grating orientation task and used multivariate Bayesian data analysis to determine predictors of acuity, the results suggest that crossmodal plasticity may underlie tactile Acuity enhancement in blindness.
...
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