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Related Experiment Video

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A Tactile Automated Passive-Finger Stimulator TAPS
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Measures of Maximal Tactile Pressures during a Sustained Grasp Task Using a TactArray Device Have Satisfactory

Urvashy Gopaul1, Derek Laver2, Leeanne Carey3,4

  • 1KITE Research-Toronto Rehabilitation Institute, University Health Network, Toronto, ON M5G 2A2, Canada.

Sensors (Basel, Switzerland)
|March 30, 2023
PubMed
Summary

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Mapping the role of sensation in arm function after stroke-from somatosensation to sensorimotor function, arm use, and participation: a scoping review.

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Quantitative clinical assessment of wrist proprioception with stroke survivors.

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The TactArray device shows good reliability and validity for measuring grip strength in stroke survivors. This sensor-based tool accurately quantifies maximal tactile pressures during sustained grasps, aiding in rehabilitation assessments.

Area of Science:

  • Rehabilitation Engineering
  • Neuroscience
  • Biomedical Instrumentation

Background:

  • Grip strength assessment is crucial for stroke rehabilitation.
  • Traditional methods may not fully capture dynamic grasp characteristics.
  • Sensor-based devices offer enhanced quantification of pressure and force over time.

Purpose of the Study:

  • To evaluate the reliability and concurrent validity of the TactArray device.
  • To assess maximal tactile pressures and forces during sustained grasps in individuals post-stroke.
  • To determine the device's utility in both affected and less affected hands, with and without vision.

Main Methods:

  • 11 participants with stroke performed 8-second maximal sustained grasps.
  • TactArray device measured maximal tactile pressures and forces.
Keywords:
concurrent validityfinger forcespressure sensorsreliabilitystrokesustained grasptactile

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  • Reliability assessed using mean changes, CVs, and ICCs across sessions (within/between-day) and vision conditions.
  • Concurrent validity evaluated against grip strength using Pearson correlation.

    • Main Results:

    • The TactArray demonstrated good to very good reliability for maximal tactile pressures, particularly for the mean of three trials over 8 seconds.
    • Reliability was satisfactory in the affected hand across most conditions and in the less affected hand for between-day sessions.
    • Maximal tactile pressures showed moderate correlations with traditional grip strength measures.

    Conclusions:

    • The TactArray device exhibits satisfactory reliability and concurrent validity for measuring maximal tactile pressures in people with stroke.
    • This sensor-based approach provides a more comprehensive assessment of grip function.
    • Findings support the use of TactArray in stroke rehabilitation for objective grip strength evaluation.