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Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS
Published on: July 30, 2020
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Aging and the perception of tactile speed
J Farley Norman1,2, Jerica R Eaton3, McKenzie L Gunter3
1Department of Psychological Sciences, Ogden College of Science and Engineering, Western Kentucky University, 1906 College Heights Blvd. #22030, Bowling Green, KY, 42101-2030, USA. farley.norman@wku.edu.
Scientific Reports
|March 31, 2022
Summary
Older adults show reduced precision in tactile speed judgments compared to younger adults, despite similar accuracy. Age impacts tactile perception reliability, but not necessarily tactile acuity correlation.
Area of Science:
- Gerontology
- Neuroscience
- Sensory Perception
Background:
- Aging is associated with sensory changes affecting perception.
- Tactile perception, crucial for many daily tasks, may decline with age.
- Understanding age-related changes in tactile speed judgment is important for functional assessments.
Purpose of the Study:
- To investigate age-related differences in tactile speed judgment accuracy and precision.
- To examine the relationship between tactile acuity and tactile speed judgment precision in older adults.
Main Methods:
- A tactile speed matching task was performed by younger and older adults.
- Participants adjusted a test wheel's speed to match a standard wheel using their index fingertip.
- Three standard speeds (30, 50, 70 cm/s) were used.
Main Results:
- Accuracy of tactile speed judgments was comparable between younger and older adults.
- Older adults demonstrated significantly lower precision (reliability) in their judgments.
- No significant correlation was found between older adults' tactile acuity and the precision of their speed judgments.
Conclusions:
- While tactile judgment accuracy remains stable, aging impairs the reliability of tactile speed perception.
- Age-related decline in tactile perception precision is not directly predicted by tactile acuity.
- These findings highlight specific age-related decrements in sensory processing.
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