The tactile detection threshold changes when a visual stimulus is presented with a short temporal gap.
Yumi Ju
PMID 29410574WHAT IT FOUND
Adding a visual cue 50 ms before a touch did not significantly improve detection of faint taps in healthy volunteers.
The trend toward better sensitivity was not strong enough to change clinical practice.
Key findings
01The tactile detection threshold was lowest when the visual stimulus preceded the tactile stimulus by 50 ms, but this difference was not statistically significant.
02Tactile sensitivity was worse when the gap between visual and tactile stimuli was 300 ms or more compared to shorter intervals.
STILL TO COME
How it was doneWhat they found
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The study used healthy young adults, so results may not apply to patients with sensory deficits. The primary finding of improved sensitivity with a 50 ms visual lead was not statistically significant. The study did not include a 'visual only' control condition, so it is unclear if the visual stimulus itself caused false alarms. The experiment measured basic detection thresholds in a lab, not functional motor actions or daily living tasks.
Declared interests
None reported in the text.
The easy way to misread this
Do not assume that adding a visual cue 50 ms before a tactile stimulus will reliably improve patient sensation. The trend observed in this small study was not statistically significant and has not been tested in clinical populations.