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Neural Bases of Vocal Sensorimotor Impairment in Aphasia

NCT04742894 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 100

Last updated 2025-06-10

No results posted yet for this study

Summary

Aphasia is the most common type of post-stroke communication disorder characterized by deficits in speech comprehension, production and control. While recovery can be promoted with speech therapy, improvement remains modest and typically requires a large number of sessions contributing to rising health care costs. Traditional aphasia therapy focus on enhancing speech motor output; however, recent evidence suggests that the auditory feedback also plays a critical role in fluent speech. Therefore, a key step toward refining treatment strategies is to develop objective biomarkers that can probe the integrity of sensorimotor mechanisms of speech auditory feedback and identify their impaired function in patients with post-stroke aphasia. This study aims to examine the behavioral, neurophysiological (EEG), and neuroimaging (fMRI) biomarkers of speech impairment following stroke with focus on understanding the role of auditory feedback for speech production and control. We plan to test individuals with post-stroke aphasia and a matched neuroptypical control group during different speech production tasks under the altered auditory feedback paradigm. In addition, we aim to examine the effect of audio-visual feedback training on enhancing communication ability during speech. These biomarkers will be combined with existing lesion-symptom-mapping data in the aphasic group in order to identify the patterns of brain damage and diminished structural connectivity within the auditory-motor areas of the left hemisphere that predict impaired sensorimotor processing of speech in aphasia. The long-term goal of this research is to develop a model for identifying the source of sensorimotor deficit and improve diagnosis and targeted treatment of speech disorders in aphasia.

Conditions

  • Aphasia

Interventions

BEHAVIORAL

Visual Feedback Training

Participants will be trained to work with a computer setup to control the position of a visual cursor on the screen using their speech while their auditory feedback is altered. The goal of the training is to help improve speech production and motor control ability.

Sponsors & Collaborators

  • National Institute on Deafness and Other Communication Disorders (NIDCD)

    collaborator NIH

  • The University of Texas at Dallas

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
21 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2021-07-11
Primary Completion
2026-02-28
Completion
2026-02-28

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04742894 on ClinicalTrials.gov