Abstract

Purpose
Real-time magnetic resonance imaging (MRI) and accompanying analytical methods are shown to capture and quantify salient aspects of apraxic speech, substantiating and expanding upon evidence provided by clinical observation and acoustic and kinematic data. Analysis of apraxic speech errors within a dynamic systems framework is provided and the nature of pathomechanisms of apraxic speech discussed.
Method
One adult male speaker with apraxia of speech was imaged using real-time MRI while producing spontaneous speech, repeated naming tasks, and self-paced repetition of word pairs designed to elicit speech errors. Articulatory data were analyzed, and speech errors were detected using time series reflecting articulatory activity in regions of interest.
Results
Real-time MRI captured two types of apraxic gestural intrusion errors in a word pair repetition task. Gestural intrusion errors in …

Date

2012

Authors

Christina Hagedorn, Michael Proctor, Louis Goldstein, Stephen M Wilson, Bruce Miller, Maria Luisa Gorno-Tempini, Shrikanth S Narayanan

Journal

Journal of Speech, Language, and Hearing Research

Volume

60

Issue

4

Pages

877-891

Publisher

American Speech-Language-Hearing Association