Smartphone Haptics For Tactile Temporal Discrimination: Preliminary Insights into Measurement of Function

Area of Science:

• Neuroscience
• Biomedical Engineering
• Human-Computer Interaction

Background:

• Tactile temporal discrimination is crucial for various sensory-motor functions.
• Conditions like multiple sclerosis (MS) impair tactile temporal processing.
• Current methods for measuring tactile temporal discrimination thresholds (TDTs) are not easily accessible for home use.

Purpose of the Study:

• To introduce a novel method for obtaining smartphone-enabled TDTs (SE-TDTs).
• To evaluate the feasibility of SE-TDTs in differentiating between normative participants and individuals with MS.
• To compare SE-TDT results with established TDT measurement techniques.

Main Methods:

• Developed a smartphone application to deliver and record tactile stimuli.
• Recruited ten normative participants and two older adults diagnosed with MS.
• Collected SE-TDT data from all participants.

Main Results:

• SE-TDTs successfully differentiated between normative participants and individuals with MS.
• Obtained TDT ranges using smartphones were comparable to those from gold-standard electric skin stimulation methods.
• Demonstrated the potential for at-home, accessible measurement of hand function.

Conclusions:

• Smartphone-enabled TDT measurement is a viable and accessible tool for assessing tactile temporal processing.
• SE-TDTs show promise as a metric for detecting functional impairments in neurological conditions like MS.
• This technology could facilitate remote monitoring and early detection of hand dysfunction.