I. Radermacher’s research while affiliated with RWTH Aachen University and other places

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Publications (16)


The novel language-systematic aphasia screening SAPS: screening-based therapy in combination with computerised home training
  • Article

November 2017

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115 Reads

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2 Citations

International Journal of Language & Communication Disorders

Franziska Krzok

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Verena Rieger

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Katharina Niemann

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[...]

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Background: SAPS-'Sprachsystematisches Aphasiescreening'-is a novel language-systematic aphasia screening developed for the German language, which already had been positively evaluated. It offers a fast assessment of modality-specific psycholinguistic components at different levels of complexity and the derivation of impairment-based treatment foci from the individual performance profile. However, SAPS has not yet been evaluated in combination with the new SAPS-based treatment. Aims: To replicate the practicality of SAPS and to investigate the effectiveness of a SAPS-based face-to-face therapy combined with computerised home training in a feasibility study. To examine the soundness of the treatment design, to determine treatment-induced changes in patient performance as measured by SAPS, to assess parallel changes in communicative abilities, and to differentiate therapy effects achieved by face-to-face therapy versus add-on effects achieved by later home training. Methods & procedures: Sixteen participants with post-stroke aphasia (PWAs) were included into the study. They were administered the SAPS and communicative testing before and after the treatment regimen. Each PWA received one therapy session followed by home training per day, with the individual treatment foci being determined according to initial SAPS profile, and duration of treatment and possible change of focus dependent on performance assessed by continuous therapy monitoring. Outcomes & results: The combination of therapy and home training based on the SAPS was effective for all participants. We showed significant improvements for impairment-based SAPS performance and, with high inter-individual variability, in everyday communication. These two main targets of speech and language therapy were correlated and SAPS improvements after therapy were significantly higher than after home training. Conclusions & implications: SAPS offers the assessment of an individual performance profile in order to derive sufficiently diversified, well-founded and specific treatment foci and to follow up changes in performance. The appending treatment regimen has shown to be effective for our participants. Thus, the study revealed feasibility of our approach.



Randomized Controlled Therapy Effectiveness Trials in Aphasia: The Psychometric Properties of a Novel Speech-systematic Aphasia Screening (SAPS)
  • Article
  • Full-text available

October 2013

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53 Reads

Procedia - Social and Behavioral Sciences

Download



B.A.Bar and its application.
Selection of participants.
Cross-over study design. h/w = hours per week.
B.A.Bar dialogue training—example of practice material (translated from original German).
Results of dialogue testing—language systematic (5A) and communicative scoring (5B).
Supervised Home Training of Dialogue Skills in Chronic Aphasia: A Randomized Parallel Group Study

August 2011

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93 Reads

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39 Citations

Purpose The aim of this study was to prove the efficacy of supervised self-training for individuals with aphasia. Linguistic and communicative performance in structured dialogues represented the main study parameters. Method In a cross-over design for randomized matched pairs, 18 individuals with chronic aphasia were examined during 12 weeks of supervised home training. Intensive language training, assisted by an electronic learning device (B.A.Bar), was compared with nonlinguistic training. Language performance, communicative abilities, and cognitive abilities were controlled before and after each intervention and at follow-up. The language training was designed to facilitate dialogue skills as required in everyday life. Results Robust and specific improvements in the participants' linguistic and communicative abilities were obtained using B.A.Bar dialogue training but not with nonlinguistic training. The transfer to general linguistic and communicative performance remained limited when the whole group was considered. For 30%–50% of the participants, individual analysis revealed significant improvements in spontaneous language and general communicative skills. Furthermore, individual participants demonstrated significant improvements regarding standardized aphasia assessment and proxy rating of communicative effectiveness. Conclusion Supervised home training works. This study has proven that it is an effective tool for bolstering linguistic and communicative skills of individuals with aphasia.


Supervised home training in Aphasia: Language learning in dialogues

September 2010

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61 Reads

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3 Citations

Forum Logopadie

Supervised Home Training in Aphasia: Language Learning in Dialogues Highly intensive treatment is required to improve language and communication in aphasia. Supervised home training is a viable option to increase intensity of conventional, low-frequent treatment. The objective of the present study was to investigate the effi cacy of supervised home training by using B.A.Bar, a speech generating barcode reader. In a cross-over design for randomized matched pairs, 18 individuals with chronic aphasia were examined during 12 weeks of supervised home training. Intensive language training by means of B.A.Bar was compared with non-linguistic training. The language training was designed to facilitate dialogue skills as required in everyday life. Robust and specifi c improvements in the participants' linguistic and communicative abilities were obtained using B.A.Bar home training. Furthermore, participants demonstrated signifi cant improvements in proxy rating of communicative effectiveness. In conclusion, this group study has proven that B.A.Bar home training is an effective tool for bolstering linguistic and communicative skills of individuals with aphasia.


Einsatz computergestützter Verfahren in der Aphasietherapie – Medienpädagogische und therapeutische Aspekte

December 2009

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74 Reads

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6 Citations

Sprache · Stimme · Gehör

Clinical application and development of computer assisted speech and language training is based on advances in information and communication technology, on media-specific concepts of learning as well as on results from treatment studies. The technology is available, media-specific concepts like “blended learning” have been specified and outcome studies have shown that speech and language training can achieve lasting improvement when the training is provided in a repetitive mode and with high frequency. Computer-based training is specifically suited to increase intensity and hence efficacy of learning. With regard to the cost-efficacy issue, the recent development of self- and/or home-training procedures appears to be highly necessary. Of further impact are participation oriented approaches. The previous focus on word-based treatment of naming has been expanded to script-based conversation and dialogue training. This is more relevant for every day language use and utilizes better the potential of multimedia facilities.


The internet based aphasia therapy system Fleppo by Linguadapt: A method comparison therapy study

January 2008

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24 Reads

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3 Citations

Forum Logopadie

According to recent effectivity studies on aphasia rehabilitation a high therapy frequency and a linguistically systematic repetitive exercising are decisive. This can be provided by a supplementary use of computerized training programs, in addition to the established face to face therapy. On that behalf, the internet based aphasia therapy program Fleppo was tested on two chronically aphasie patients in the context of a model based study of dysgraphia treatment. Dysgraphia is treated by both direct (segmental-phonographical) and indirect (holistic-lexical) methods. The results show a positive effect only for the direct approach. Partly contrasting results can be explained within individual contexts.


Supervised home training in aphasia by means of B.A.Bar - A single case study

March 2006

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37 Reads

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5 Citations

There is wide agreement in the literature that significant improvements in aphasia therapy can only be obtained with high frequency of treatment. Self-training of patients at home is a reasonable completion of outpatient treatment to enhance frequency, the efficacy of home training in aphasia has not been studied empirically under strict research criteria. The aim of the present single case study was to investigate efficacy of a supervised home training that makes use of the speech generating barcode reader B.A.Bar. Results show significant improvements in word activation by B.A.Bar home training evert in conditions of severe global aphasia.


Citations (8)


... Except for two participants with global aphasia, apraxia and inexperience in computer applications, the participants coped well with the home training and were satisfied with the predefined amount of supervision. These findings conform to Nobis-Bosch et al. (2006 who determined a comparable amount of supervision (1-3 h per week) for the B.A.Bar home training. ...

Reference:

The novel language-systematic aphasia screening SAPS: screening-based therapy in combination with computerised home training
Supervised home training in aphasia by means of B.A.Bar - A single case study
  • Citing Article
  • March 2006

... The 44 studies applied 20 distinct therapy types, nine studies compared more than one therapy type [46,47,[49][50][51][52][53][54][55]: Constraint therapy (e.g., CILT, CIAT, CIAT-Plus, CILT-II) [26,47,[49][50][51][52][53][54][56][57][58][59][60][61][62][63][64]; Promoting Aphasics' Communication Effectiveness (PACE) [50,53,54]; Multi-Modality Aphasia Treatment (M-MAT) [51,52]; Model-Orientated Aphasia Therapy (MOAT) [49]; Phonomotor therapy [55,[65][66][67][68]; Naming treatments [46,69,70]; Intensive Comprehensive Aphasia Programs (ICAPs) [17,19,71]; Action Observation intervention [72,73]; Semantic Feature Analysis (SFA) [55,74]; Script training [75,76]. Eleven studies used a unique treatment method (e.g., Intensive Integrative Language Therapy [77], Listen-In [78], Phonological Components Analysis (PCA) [79], Word-picture verification treatment [80], Intensive impairmentbased treatment [81], Group aphasia therapy [45], Lexical retrieval [82], Individual and group treatment [18], Group language games [83], Dialogue skills [84], Conversational therapy [85]). Figure 3 presents the program intensities and durations. ...

Supervised home training in Aphasia: Language learning in dialogues
  • Citing Article
  • September 2010

Forum Logopadie

... Das gilt auch für den logopädischen Berufsalltag (Hilbert & Paulus 2018). Während computergestützte Interventionen seit vielen Jahren erfolgreich in der Logopädie eingesetzt werden (Euler et al. 2009, Radermacher 2009 ...

Einsatz computergestützter Verfahren in der Aphasietherapie – Medienpädagogische und therapeutische Aspekte
  • Citing Article
  • December 2009

Sprache · Stimme · Gehör

... During training sessions, learning was supported by presenting phonological and semantic information about the target item, which served as cues (see Figure 1(a)). Materials and procedures were adapted from speech therapy for aphasic patients (Abel, Schultz, Radermacher, Willmes, & Huber, 2003;Abel et al., 2005Abel et al., , 2015. Both cueing techniques offer stepwise decreasing assistance, and thereby ease immediate word retrieval from the mental lexicon and improve lexical access in the longer term. ...

Increasing versus vanishing cues in naming therapy
  • Citing Article
  • October 2003

Brain and Language

... In regard of patient-related factors, which can be described as factors regarding personal characteristics, attitudes and behaviours, dimensions such as the perceived level of confrontation in therapy settings, as well as the experience of exhaustion, lack of interest and lack of time due to the amount of daily activities are factors prohibiting guideline-based therapy. While the effect of increasing or decreasing cueing on word retrieval, semantic, phonological or word type-specific cueing is not understood but well discussed, [40][41][42] the effect on the person performing the task has not yet been discussed beyond the linguistic level: the present results make it clear that the methodological tools of speech therapy and sufficient intervention planning must also include the assessment of possible effects on the patient. Even the contrast between a drill-based and a conversationbased therapy application was conducted at the level of the linguistic, not the motivational outcome, 43 the effects of task difficulty were researched at the level of cortical activation, 44 not hollistically. ...

Decreasing and increasing cues in naming therapy for aphasia
  • Citing Article
  • September 2005

... Finally, the intervention was computerized to allow opportunities for self-managed home practice. This may increase the frequency with which participants engage with intervention activities (Nobis-Bosch et al., 2011). High-intensity aphasia therapy (8.8 h per week for 11 weeks) has been found to be more effective compared with lower intensity therapy, administered over a longer time span (Bhogal et al., 2003). ...

Supervised Home Training of Dialogue Skills in Chronic Aphasia: A Randomized Parallel Group Study

... The construct is generally defined as the attentional capacity to maintain performance over time. Given the diversity of terms and measures linked to vigilance, some authors deem it as a nonunitary concept (Langner & Eickhoff, 2013;Luna et al., 2018;Sturm et al., 1999). In this vein, Luna et al. distinguish two components of vigilance: executive vigilance (EV) and arousal vigilance (AV). ...

Functional anatomy of intrinsic alertness: Evidence for a fronto-parietal-thalamic-brainstem network in the right hemisphere

Neuropsychologia

... A classic and still widely used example are pseudowords, phonotactically legal strings of letters not associated with any meaning or concept in a reader's language (note that in cognitive science literature, pseudowords are frequently confused with nonwords, which are phonotactically nonconforming strings, an equally important, but different category). Such stimuli have been instrumental in understanding how, for example, the brain handles the conversion of orthography into phonology 26,27 . Although pseudowords may not be completely absent from natural language experience, when they appear they are usually judged as language errors of little conceptual interest to a linguist. ...

Lexical decision of nonwords and pseudowords in humans: A positron emission tomography study
  • Citing Article
  • August 2003

Neuroscience Letters