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Lollipops and numbing gels help scientists unlock reading secrets

NCT ID NCT05854082

Knowledge-focused Sponsor: University of Alberta Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at how speech production helps reading in adults with and without dyslexia. 56 adults completed reading tasks while sucking a lollipop, holding a bite bar, or having their mouth numbed with lidocaine. The goal was to see if these motor tasks change reading speed and accuracy.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

56 people

The number who actually took part.

Started

Aug 2023

Finished

Jan 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * All participants will be healthy and need to be proficient in English as the assessment materials are only available in English. * Adult participants must weigh at least 50 kg or 110 lbs to avoid any possible toxic effects from the lidocaine. Exclusion Criteria: * Participants must have no personal or family history of adverse reactions to anesthetics to complete all the conditions. * Participants who cannot consume sugary products will also be excluded. * Additional exclusion criteria include: severe kidney disease; severe liver disease; treatment with class I antiarrhythmic drugs (such as mexiletine) or class III antiarrhythmic drugs (such as amiodarone) * lack of integrity of oral mucosa\] * allergy to non-medicinal ingredients and preservatives (and related compounds) of Lidocaine Viscous, such as methylparaben, propylparaben, paraaminobenzoic acid, saccharin, artificial colours and flavour * concomitant use of another anaesthetic containing lidocaine or another amide * participant being pregnant or suspecting that she might be pregnant

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Conditions

The condition(s) this trial relates to.

dyslexia reading disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Reading disorders

Contacts and locations

Locations

  • Department of Communication Sciences and Disorders, University of Alberta

    Edmonton, Alberta, T6G 2R3, Canada