| 1. |
- Kristensson, Joana, 1972, et al.
(författare)
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Anomia in left hemisphere stroke, multiple sclerosis and Parkinson's disease - a comparative study
- 2023
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Ingår i: Disability and Rehabilitation. - 0963-8288 .- 1464-5165.
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Tidskriftsartikel (refereegranskat)abstract
- PurposeTo explore quantitative and qualitative features of anomia in participants with left-hemisphere stroke, Parkinson's disease, or multiple sclerosis.Materials and methodsThis descriptive cross-sectional study compares signs of anomia within and across participants (n = 87), divided into four groups; moderate to severe anomia after stroke (MSAS, n = 19), mild anomia after stroke (MAS, n = 22), PD (n = 19) and MS (n = 27). Aspects analysed include naming accuracy and speed, the nature of incorrect responses, semantic and phonemic verbal fluency, information content in re-telling, and the relationship between test results and self-reports on word-finding difficulties and communicative participation.ResultsAll groups had impaired verbal fluency, prolonged response times and reduced information content in re-telling. The MSAS group had significantly more signs of anomia than the other groups. Results from the other groups overlapped on a MAS-PD-MS continuum. Both semantically and phonologically incorrect responses were common in the stroke groups, while semantically incorrect ones predominated in the PD and MS groups. All four groups reported a similar negative impact on self-perceived communicative participation. Correlations between self-reports and test results were inconsistent.ConclusionsAnomia features have quantitative and qualitative similarities and differences across neurological conditions.
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| 2. |
- Kristensson, Joana, 1972, et al.
(författare)
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Effects on communication from intensive treatment with Semantic Feature Analysis in aphasia
- 2015
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Ingår i: Aphasiology. - : Informa UK Limited. - 0268-7038 .- 1464-5041. ; 29:4, s. 466-487
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Tidskriftsartikel (refereegranskat)abstract
- Background: Anomia, a persistent and frequent symptom of aphasia after stroke, obstructs the transfer of information in conversation, which can have serious consequences for participation in everyday social interaction with significant others and in society. Aims: This study aimed to replicate the findings of Coelho and his colleagues, as well as Boyle, and Wambaugh and Ferguson regarding the use of semantic feature analysis (SFA) for individuals with aphasia after stroke. Its main purpose was to explore whether intervention could (1) increase the ability to participate in conversation and (2) lead to positive changes in functional communication as perceived by the participants themselves and their significant others. Methods & Procedures: In this multiple-baseline across-subjects-design study, three participants with chronic aphasia were treated with intensive training using SFA. Treatment outcome was assessed with repeated measures of confrontation naming of actions and objects and with quantitative ratings of the quality of speech as well as communicative participation in conversation. The ratings were made by independent assessors blinded as to what phase of the study the data were obtained from. In addition, a questionnaire measuring perceived functional communication as reported by the participants and their significant others was administered before and after the training as well as at a follow-up session 10–12 weeks after the training was completed. Outcome & Results: Only minor treatment outcomes were apparent in this study. Visual inspection of the results showed a slight increase in the ability to participate in conversation for two of the three participants as well as a fall in the number of complex paraphasias for one of them and an increase in self-corrections for two. There was no improvement in the participants’ confrontation-naming ability. Two of the three participants rated their own functional communication skills higher at follow-up than before training while the third participant reported no change. As regards the ratings by significant others at follow-up versus before training, there was one slight decrease, one slight increase, and one considerable increase. Conclusions: Treatment with SFA might improve communicative skills and increase participation in everyday conversation despite not having a measurable effect on confrontation-naming ability in a formal assessment situation. Further research is needed to identify the individuals with aphasia who can benefit from treatment with SFA and to determine the nature of its impact on communicative participation.
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| 3. |
- Kristensson, Joana, 1972, et al.
(författare)
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Evaluation of treatment effects of semantic feature analysis on mild anomia in multiple sclerosis
- 2022
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Ingår i: Aphasiology. - : Informa UK Limited. - 0268-7038 .- 1464-5041. ; 36:6, s. 706-731
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Tidskriftsartikel (refereegranskat)abstract
- Background: Multiple sclerosis (MS) commonly includes anomia and other communicative deficits that affect communicative participation and quality of life. Anomia treatment in MS is currently unexplored. Owing to the degenerative nature of MS, compensatory treatment might be preferable to restorative treatment. Semantic feature analysis (SFA) has been reported to have a treatment effect in aphasia and traumatic brain injury, and it can also be used as a compensatory word-finding strategy. SFA might therefore be effective on anomia in MS. Aims: The aim of this study was to evaluate the treatment effects of SFA on mild anomia in MS. Hypotheses were that, if used as a strategy, SFA may improve word-retrieval ability in connected speech, reduce self-perceived word-finding difficulties and increase communicative participation. Methods & Procedures: Two participants (one with relapsing-remitting MS, one with progressive MS) experiencing anomia and reduced communicative participation took part in this early-phase study with a single-case experimental design (SCED). Outcome measures included accuracy and speed in confrontation naming of treated items, correct information units (CIUs) in a re-telling task, self-reported strategy use in everyday communication, self-reported occurrence of anomia and related nuisance, and self-reported communicative participation. Measurements were carried out before treatment, at the beginning of every third treatment session, once directly after treatment, repeatedly during a maintenance phase, and once at a follow-up session ten weeks after treatment. Outcomes & Results: No treatment effects on confrontation-naming ability, re-telling ability or self-reported measures were evident in either participant after treatment with SFA. Effects of repeated measures appeared as reduced response time in confrontation naming. Conclusions: SFA as the sole element of treatment may not be sufficient to obtain treatment effects on mild anomia in MS. Further research is warranted. © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
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| 4. |
- Kristensson, Joana, 1972, et al.
(författare)
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Naming of Objects and Actions after Treatment with Phonological Components Analysis in Aphasia
- 2018
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Ingår i: Clinical Archives of Communication Disorders. - : Korean Academy of Speech-Language Pathologies. - 2508-5948. ; 3:2, s. 137-150
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: To explore the effects of intensive treatment with phonological components analysis on naming of both objects and actions. Methods: Phonological components analysis (PCA) was used to treat two individuals with moderate or severe aphasia after stroke. A single case study design with chronological time series analysis was employed to explore the effects of treatment for a total of up to 20 hours comprising the naming of self-chosen objects and actions. Changes in confrontation naming ability were assessed repeatedly. In addition, generalisation of training effects was examined in connected speech in a picture description task as well as in ratings of functional communication skills as perceived by the participants and their next of kin. Results: An increase in correctly produced words for treated items with some generalisation to untreated items was demonstrated post-treatment in a participant with moderate mixed fluent aphasia and mostly phonological errors. Number of words and degree of informativeness in the picture description task also increased. Results remained at a 10-week follow-up. A participant with severe conduction aphasia and mainly semantic errors in the pre-training assessment also demonstrated a small increase in correct confrontation naming post-treatment. Some aspects of functional communication skills were rated slightly higher, but both participants perceived the negative impact of the aphasia to be greater post-treatment. Conclusions: Phonological component analysis may be used in training of both objects and actions. However, aphasia severity and underlying deficits most likely influence the results and further research is warranted to explore the training effects.
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| 5. |
- Kristensson, Joana, 1972, et al.
(författare)
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Naming vs. non-naming treatment in aphasia in a group setting–A randomized controlled trial
- 2022
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Ingår i: Journal of Communication Disorders. - : Elsevier BV. - 0021-9924 .- 1873-7994. ; 97
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: Anomia affects numerous persons with aphasia. Treatment effects of anomia group therapy have been reported, but the evidence is not comprehensive. This study aimed to explore treatment effects of a naming treatment compared with a non-naming treatment delivered in a group setting. Methods: In a randomized controlled trial, 17 participants with chronic poststroke aphasia underwent group therapy, 2 hours a session, 3 times per week, for a total of 20 hours. The treatment given in the naming group was modified semantic feature analysis (SFA). Treatment content in the non-naming group comprised auditory comprehension, copying text, and reading. The primary outcome measure was accuracy in confrontation naming of participant-selected trained nouns and verbs. Generalization effects were evaluated in single-word naming, connected speech, and everyday communication. Results: Participants in both groups significantly improved their naming of trained items. There were no differences between the groups. The treatment effect did not remain at follow-up 10 weeks after therapy. No other statistically significant changes occurred in either group. Conclusions: Group intervention can improve naming ability in individuals with chronic aphasia. However, similar treatment effects can be achieved using a non-naming treatment as using a naming treatment, such as modified SFA. Further research is warranted to identify the most important elements of anomia group therapy.
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| 6. |
- Kristensson, Joana, 1972
(författare)
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Word-finding difficulties in left hemisphere stroke, multiple sclerosis and Parkinson's disease - differences in symptom occurrence and effects of anomia treatment
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Word-finding difficulties, or anomia, are a common symptom in various conditions affecting the brain, such as stroke, multiple sclerosis (MS) or Parkinson’s disease (PD). The aim of this thesis is twofold: (i) to increase our knowledge about the similarities and dissimilarities between the word-finding difficulties associated with different kinds of neurological conditions, and (ii) to evaluate treatment effects of anomia treatment using a method called semantic feature analysis (SFA). Word-finding ability was assessed by means of a comprehensive test battery to describe and compare signs of anomia, in relation to various health aspects within the International Classification of Functioning, Disability and Health (ICF), in 87 participants with left-hemisphere stroke, MS or PD (in Study I), and to evaluate changes in outcome measures after SFA treatment (in Studies II–IV). Three participants with stroke (Study II) and two participants with MS (Study IV) participated in multiple-baseline across-subjects single-case experimental-design studies, and seventeen participants with stroke participated in a randomized controlled trial (Study III). Findings from Study I revealed similarities in terms of reduced fluency, delayed response times and difficulties supplying sufficiently informative content when re-telling cartoon plots. Most participants reported experiencing a negative impact on their communicative participation and quality of life. Participants with anomia after stroke differed from those with MS or PD in that they typically had more extensive anomia, although there were overlaps between the groups. However, the degree of anomia as assessed in formal tests did not always correlate with the degree of self-perceived communicative difficulties in everyday life. Findings from the three intervention studies (Studies II–IV) showed that participants with stroke found the trained items used in SFA treatment significantly easier to retrieve after the treatment, but that these effects were primarily limited to the trained words and that similar treatment effects could be achieved using another type of anomia treatment as well. No treatment effects were apparent in participants with MS who had mild anomia. Moreover, the findings confirmed those from previous studies, namely that generalization effects on untrained items, effects on connected speech and improvements to self-reported communicative participation and quality of life are difficult to achieve; only minor (statistically non-significant) treatment effects on communicative activity and participation were found. In conclusion, anomia of various degrees in stroke, MS and PD may lead to similar consequences for everyday communication and self-perceived communicative participation. Anomia treatment focused solely on improving single-word retrieval may not be sufficient to yield effects on the activity and participation in everyday communicative situations. Keywords: anomia, word-finding difficulties, ICF, assessment, self-reports, naming, everyday communication, semantic feature analysis, SFA, treatment, stroke, multiple sclerosis, Parkinson’s disease
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| 7. |
- Torinsson, Malin, et al.
(författare)
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Telerehabilitation with Verb Network Strengthening Treatment (VNeST) in two participants with mild-to-moderate and moderate-to-severe aphasia: A single-case experimental design study
- 2024
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Ingår i: APHASIOLOGY. - 0268-7038 .- 1464-5041.
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Tidskriftsartikel (refereegranskat)abstract
- BackgroundVerb Network Strengthening Treatment (VNeST) is a verb-centred aphasia treatment that targets the semantic relationships between a verb (e.g., dig) and related content words (e.g., gardener, hole), aiming to promote word retrieval and sentence production in aphasia. Previous research shows promising results of VNeST in several participants.AimsThis study investigates the effects of VNeST through telerehabilitation on word retrieval and sentence production with treated and semantically related untreated verbs, as well as the possible generalisation to confrontation naming and connected speech. Further, functional communication, communicative participation, health-related quality of life and client satisfaction are explored.Methods and ProceduresA single-case experimental design study with multiple baselines was conducted with two participants with stroke-induced mild-to-moderate Broca's aphasia or moderate-to-severe Wernicke's aphasia who received VNeST through telerehabilitation. Percentage of non-overlapping data, Baseline Corrected Tau and d-index effect size were used to measure improvement in word retrieval and sentence production elicited through video-clip stimuli. The study is registered with ClinicTrials.gov, number NCT05152979.Outcomes and ResultsThe participant with Wernicke's aphasia improved in word retrieval in sentences with trained and untrained verbs and showed some - albeit limited - generalisation to confrontation naming of nouns and verbs. The participant with Broca's aphasia withdrew after half of the planned dosage, as he did not consider VNeST suitable for his needs. He did not improve in word retrieval or sentence production.ConclusionsVNeST shows promise when it comes to improving word retrieval in trained and semantically related untrained stimuli in moderate-to-severe Wernicke's aphasia. This study adds to the existing literature by showing potential improvement in VNeST through telerehabilitation.
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