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Touchscreen-based finger tapping: Repeatability and configuration effects on tapping performance.

Soma Makai-Bölöni1,2, Eva Thijssen1,2, Emilie M J van Brummelen1

  • 1Centre for Human Drug Research, Leiden, the Netherlands.

Plos One
|December 7, 2021
PubMed
Summary
This summary is machine-generated.

Touchscreen tapping tasks can objectively measure Parkinson's disease (PD) motor symptoms. Visual cues should be avoided as they alter tapping performance, making them less sensitive to medication effects.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Movement Science

Background:

  • Parkinson's disease (PD) affects 2% of adults over 65, necessitating objective methods for assessing motor symptoms like bradykinesia.
  • Touchscreen tapping tasks offer a quantifiable approach to evaluating drug efficacy for PD motor impairments.
  • Optimal setup for these tapping tasks remains undefined, impacting their reliability and sensitivity.

Purpose of the Study:

  • To compare the repeatability and sensitivity of four touchscreen tapping tasks in healthy participants.
  • To evaluate the impact of visual cueing on tapping task performance.
  • To identify optimal task parameters for assessing motor function in neurodegenerative diseases.

Main Methods:

  • Four tapping tasks were compared in 14 healthy participants: alternate finger tapping (AFT) and alternate side tapping (AST), with and without visual cues.
  • Within- and between-day repeatability and sensitivity of calculated parameters were assessed.
  • Key parameters analyzed included tapping speed, rhythm, accuracy, and spatial error.

Main Results:

  • Visual cueing decreased tapping speed and rhythm while improving accuracy, particularly for AST.
  • AST generally showed lower speed and accuracy but improved rhythm compared to AFT.
  • Total taps and mean spatial error demonstrated the highest repeatability and sensitivity across tasks.

Conclusions:

  • Visual cueing should be omitted in tapping tasks to ensure parameters can freely vary, accurately reflecting medication effects.
  • The choice between AFT and AST depends on the specific motor aspect being investigated.
  • Non-cued AFT and AST warrant further validation in Parkinson's disease patients for clinical assessment.