Wambaugh Julie L, Wright Sandra, Mauszycki Shannon C, Nessler Christina, Bailey Dallin
a VA Salt Lake City Health Care System , Salt Lake City , UT , USA and.
b University of Utah , Salt Lake City , UT , USA.
Int J Speech Lang Pathol. 2018 Apr;20(2):247-261. doi: 10.1080/17549507.2016.1267262. Epub 2017 Jan 13.
The purpose of this investigation was to examine the effects of a modified version of a newly developed therapy for aphasia and acquired apraxia of speech (AOS), Combined Aphasia and Apraxia of Speech Treatment (CAAST).
Four speakers with chronic AOS and aphasia received CAAST in the context of multiple baseline designs. Dependent variables included language measures (i.e. production of correct information units (CIUs)) and speech production measures (i.e. speech intelligibility and percent correct consonants (PCC) in sentence repetition).
Three of the participants demonstrated improved CIU production with treated picture sets and two also demonstrated generalization to untreated sets. All participants achieved substantially increased CIU production in an untrained discourse context. Speech intelligibility increased for three of the participants and increases in PCC were observed for all of the participants at two weeks post-treatment. However, PCC improvements were maintained for only two of the speakers at six weeks post-treatment.
The revised CAAST protocol was associated with improved changes in speech and generalization across contexts in comparison to the previous iteration of CAAST. However, focus on sentence production in generalization practice may have been detrimental to CIU production for one participant.
本研究旨在检验一种新开发的针对失语症和后天性言语失用症（AOS）的改良疗法——联合失语症和言语失用症治疗（CAAST）的效果。
四名患有慢性AOS和失语症的受试者在多重基线设计的背景下接受了CAAST治疗。因变量包括语言指标（即正确信息单元（CIU）的产出）和言语产出指标（即言语可懂度以及句子重复中辅音正确率（PCC））。
三名受试者在接受治疗的图片组中CIU产出有所改善，两名受试者还表现出向未治疗图片组的泛化。所有受试者在未经训练的语篇情境中CIU产出均大幅增加。三名受试者的言语可懂度提高，所有受试者在治疗后两周的PCC均有所增加。然而，在治疗后六周，只有两名受试者的PCC改善得以维持。
与CAAST的前一版本相比，修订后的CAAST方案与言语改善及跨情境泛化相关。然而，在泛化练习中专注于句子产出可能对一名受试者的CIU产出产生了不利影响。
