Recruiting

Observational Study

Sponsor:

Arizona State University

Code:

NCT05918679

Conditions

Healthy Adults

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Accepted

Interventions

Effects of speech variability on speech motor learning

Effects of error-detection training on speech motor learning

Contributions of error awareness to speech motor learning

Enhancing auditory-to-motor mapping with augmented visual feedback

Effects of enhanced auditory-motor awareness on speech motor learning

Study Details

Brief summary:

The aim of this research is to develop protocols that selectively target and improve speech-motor learning processes. Participants will be asked to name pictures, read words/sentences, and listen to sounds while their speech signals will be collected during the study.

Conditions

Healthy Adults

Study ID

NCT05918679

Start date

Jun 1, 2023

Status verified date

Jul, 2026

Completion date

Aug 31, 2027

Anticipated

Primary completion date

Aug 31, 2027

Anticipated

Eligibility Criteria

Eligibility Criteria

Sex: All

Age: 18+

Healthy Volunteers: Accepted

Inclusion Criteria:

  • 18 years and older
  • native speaker of American English
  • normal (age-appropriate) binaural pure-tone hearing threshold
  • not taking medications affecting sensorimotor functioning
  • no current or history of communication, neurological, or psychological disorders

Exclusion Criteria:

Study Design

Enrollment

510 participants

Anticipated

Allocation

Randomized

Intervention Model

Parallel Assignment

Primary purpose

Basic Science

Interventions and Outcome Measures

Arms

experimental: Healthy Adults group 1

experimental: Healthy Adults group 2

experimental: Healthy Adults group 3

experimental: Healthy Adults group 4

experimental: Healthy Adults group 5

Interventions

Effects of speech variability on speech motor learning

This intervention will examine whether reducing normal variability of speech could improve error detection and speech motor learning. We will design training tasks to change subjects' speech variability. We will train subjects to decrease/decrease their speech variability. Upon completing the training tasks, subjects will complete a motor learning task.

Effects of error-detection training on speech motor learning

This intervention will examine whether improving subjects' ability to detect and estimate auditory perturbation could improve speech motor learning. For this purpose, we will design training tasks to change subjects' estimation of the perturbation magnitude. After completing the training tasks, subjects will complete the motor learning task.

Contributions of error awareness to speech motor learning

This intervention will examine the contributions of error awareness to speech motor learning. Subjects will produce a target word while receiving perturbed auditory feedback with different magnitudes. Subjects will be trained to indicate the magnitude of the error they perceived with or without visual feedback.

Enhancing auditory-to-motor mapping with augmented visual feedback

This intervention will determine the contributions of enhanced auditory-to-motor mappings to speech motor learning. We will design training tasks in which we will use visual feedback to provide feedback regarding subjects' accuracy of auditory-to-motor mapping.

Effects of enhanced auditory-motor awareness on speech motor learning

In this intervention, subjects will be trained to control their articulators more accurately and be more aware of their articulators' position and their auditory consequences. After the training tasks, subjects will complete a motor learning task.

Primary outcome measure

  • Change in speech output in response to previously experienced auditory errors [ Time Frame: within each session of the study that may last up to 2 hours ]
  • Change In Speech Output Immidiately After Hearing Auditory Errors [ Time Frame: within each session of the study that may last up to 2 hours ]

Central Contacts and Locations

Central contacts

Ayoub Daliri

4807278397ayoub.daliri@asu.edu

Locations

Arizona State University

Recruiting

Tempe, Arizona, United States, 85287

Contacts

Ayoub Daliri

480-727-8397ayoub.daliri@asu.edu

More Information

Sponsor

Arizona State University

Last update posted

Jul 8, 2026

Last verified

Jul, 2026

Trial information was received from ClinicalTrials.gov and was last updated on 2026-09-09. This information was provided to ClinicalTrials.gov by Arizona State University on 2026-07-08.