Effects of Recursive Self-feedback on Speech Production in Aphasia

Not Applicable

Not yet recruiting

• Conditions: Aphasia; Stroke
• Interventions: Behavioral: Non-adaptive recursive self-feedback procedure; Behavioral: Adaptive recursive self-feedback procedure

• Registration Number: NCT06323629
• Lead Sponsor: University of South Florida

Brief Summary

The goal of this clinical trial is to test the effects of recursive self-feedback procedures on spontaneous speech production in stroke survivors with impaired speech production (aphasia). The main question it aims to answer is:

• To what extent can stroke survivors with aphasia use their self-feedback alone to improve their spontaneous speech production?

Participants will be engaged in the following activities:

* They will perform language and cognitive tasks.

* Afterwards, they will receive treatments using tablets and headphones at no cost to them.

* The experimental treatments (recursive self-feedback procedures) entails responding to prompts, listening to playbacks of their speech response and attempt to minimize/correct the errors in the next attempt. This process will be repeated multiple times per prompt.

* The experimental treatments are two: an adaptive version that adapts the complexity of the treatment prompt and a non-adaptive version that does not adapt task complexity.

* Researchers will compare the experimental treatments to see if both have similar effects on improving spontaneous speech production.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2024-02-21
• Status Verified: 2024-03
• Study First Submitted QC: 2024-03-20
• Last Update Submitted: 2024-03-20
• Study First Posted: 2024-03-21
• Last Update Posted: 2024-03-21
• Study Start: 2024-04
• Primary Completion: 2025-03
• Study Completion: 2025-03

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 45

Inclusion Criteria

• 6 months post left hemisphere stroke
• Aphasia due to left hemisphere stroke
• Dominant English speaker

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Exclusion Criteria

• Speech-language deficits due to neurological insults such as Parkinson's disease, neurodegenerative conditions etc.
• Uncorrected sensory impairments.
• Language comprehension impairment.
• Severe cognitive impairment.

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Non-adaptive recursive self-feedback procedure	Non-adaptive recursive self-feedback procedure	Using a tablet, participants listen to speech playback of their response to a prompt and self-correct/minimize their speech errors in a subsequent attempt. This process is looped multiple times per prompt. However, it only uses narrative prompts with high complexity.
Adaptive recursive self-feedback procedure	Adaptive recursive self-feedback procedure	Using a tablet, participants listen to speech playback of their response to a prompt and self-correct/minimize their speech errors in a subsequent attempt. This process is looped multiple times per prompt. It adapts across narrative prompts with low and high complexities.

Primary Outcome Measures

Name	Time	Method
Speaking rate	Within 1 week before treatment and within 1 week after treatment.	Correct words produced per minute
Speech initiation latency in milliseconds	Within 1 week before treatment and within 1 week after treatment.	Latency before retrieving the first correct word in an utterance.