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The right uncinate fasciculus supports verbal short-term memory in aphasia
Brain Struct Funct. 2023 Apr 2. doi: 10.1007/s00429-023-02628-9. Online ahead of print.ABSTRACTVerbal short-term memory (STM) deficits are associated with language processing impairments in people with aphasia. Importantly, the integrity of STM can predict word learning ability and anomia therapy gains in aphasia. While the recruitment of perilesional and contralesional homologous brain regions has been proposed as a possible mechanism for aphasia recovery, little is known about the white-matter pathways that support verbal STM in post-stroke aphasia. Here, we investigated the relationships between the language-related whi...
Source: Brain Structure and Function - April 3, 2023 Category: Neuroscience Authors: Guillem Oliv é Claudia Pe ñaloza Luc ía Vaquero Matti Laine Nadine Martin Antoni Rodriguez-Fornells Source Type: research

The Feeling That 'I Can Say It in My Head' Predicts Word-by-Word Success in Subsequent Aphasia Treatment. (P2.118)
CONCLUSIONS: In one individual, self-reported internal naming predicted success and rate of learning on a word-by-word basis during speech therapy for anomia. This suggests that claims of inner speech may be more reliable than previously appreciated, and may also be clinically relevant. These self-reports could improve accuracy of prognosis, or potentially be used to guide treatment on a word-by-word basis.Disclosure: Dr. Hayward has nothing to disclose. Dr. Sullivan has nothing to disclose. Dr. Snider has nothing to disclose. Dr. Lacey has nothing to disclose. Dr. Friedman has nothing to disclose. Dr. Turkeltaub has nothing to disclose.
Source: Neurology - April 9, 2014 Category: Neurology Authors: Hayward, W., Sullivan, K., Snider, S., Lacey, E., Friedman, R., Turkeltaub, P. Tags: Cerebrovascular Disease and Interventional Neurology: Behavioral, Cognitive, and Miscellaneous Source Type: research

When semantics aids phonology: A processing advantage for iconic word forms in aphasia
Publication date: Available online 28 January 2015 Source:Neuropsychologia Author(s): Lotte Meteyard , Emily Stoppard , Dee Snudden , Stefano F. Cappa , Gabriella Vigliocco Iconicity is the non-arbitrary relation between properties of a phonological form and semantic content (e.g. “moo”, “splash”). It is a common feature of both spoken and signed languages, and recent evidence shows that iconic forms confer an advantage during word learning. We explored whether iconic forms conferred a processing advantage for 13 individuals with aphasia following left-hemisphere stroke. Iconic and control words were compared in ...
Source: Neuropsychologia - February 1, 2015 Category: Neurology Source Type: research

Temporal information processing as a basis for auditory comprehension: clinical evidence from aphasic patients.
CONCLUSIONS & IMPLICATIONS: These results provide further clinical evidence supporting the thesis that TIP constitutes the core process incorporated in both language and attentional resources. The novel value of the present study is the indication for the first time in Slavic language users a clear coexistence of the 'timing-auditory comprehension-attention' relationships. PMID: 25727346 [PubMed - as supplied by publisher]
Source: International Journal of Language and Communication Disorders - February 27, 2015 Category: Speech Therapy Authors: Oron A, Szymaszek A, Szelag E Tags: Int J Lang Commun Disord Source Type: research

Evidence for Intensive Aphasia Therapy: Consideration of Theories from Neuroscience and Cognitive Psychology
Publication date: Available online 21 June 2015 Source:PM&R Author(s): Jade K. Dignam , Amy D. Rodriguez , David Copland Treatment intensity is a critical component to the delivery of speech-language pathology and rehabilitation services. Within aphasia rehabilitation, however, there is currently insufficient evidence to guide clinical decision making with respect to the optimal treatment intensity. This review considers perspectives from two key bodies of research; the neuroscience and cognitive psychology literature, with respect to the scheduling of aphasia rehabilitation services. Neuroscience research sugges...
Source: PMandR - June 29, 2015 Category: Rehabilitation Source Type: research

The multiple validities of neuropsychological assessment.
This article discusses construct and criterion validity of neuropsychological tests, as well as assessment validity, which allows determination of whether an individual examinee is producing valid test results. Factor analyses identify 6 domains of abilities. Tests of learning and memory and processing speed are most sensitive to presence of brain dysfunction in both traumatic brain injury (TBI) and Alzheimer’s disease (AD). Tests of processing speed, working memory, verbal symbolic functions, and visuoperceptual and visuospatial judgment and problem solving are sensitive to the severity of TBI and AD, as well as to the ...
Source: American Psychologist - November 30, 2015 Category: Psychiatry & Psychology Authors: Larrabee, Glenn J. Source Type: research

Aphasia: evidence-based therapy approaches.
Abstract Speech and language therapy is essential in the rehabilitation of aphasic disorders following a stroke. Due to the predicted increase of aphasia and limited resources within the healthcare system, the development of efficient and sustainable treatment methods is of exceptional importance. The effectiveness of both traditional and innovative approaches needs to be evaluated against the standards of evidence-based medicine. Class I evidence has been established for high-intensity speech and language therapy in subacute and chronic stages of aphasia. Innovative training-based approaches have so far only bee...
Source: Der Nervenarzt - September 19, 2016 Category: Neurology Authors: Darkow R, Flöel A Tags: Nervenarzt Source Type: research

Transcranial direct current stimulation (tDCS) facilitates verb learning by altering effective connectivity in the healthy brain
Publication date: Available online 17 July 2018Source: NeuroImageAuthor(s): Valentina Fiori, Lisa Kunz, Philipp Kuhnke, Paola Marangolo, Gesa HartwigsenAbstractRecent studies have shown that the left inferior frontal gyrus (IFG) plays a key role in language learning. Facilitatory stimulation over this region by means of anodal transcranial direct current stimulation (tDCS) can modulate linguistic abilities in healthy individuals and improve language performance in patients with post-stroke aphasia. Neuroimaging studies in healthy participants have suggested that anodal tDCS decreases task-related activity at the stimulated...
Source: NeuroImage - July 18, 2018 Category: Neuroscience Source Type: research

Artificial Grammar Learning with Transcranial Direct Current Stimulation (tDCS): A Pilot Study
The relationship between attention and learning has been well-established [1], with many studies showing that increased attention can improve learning and decreased attention can be detrimental to learning. Although stroke-induced aphasia is defined as a primary language impairment, many persons with aphasia also have attention deficits [2]. Sustained attention, the ability to maintain attention to a stimulus for an extended period of time, is an important prerequisite for participating in speech and language therapy and has been shown to be impaired in persons with aphasia [2].
Source: BRAIN STIMULATION: Basic, Translational, and Clinical Research in Neuromodulation - July 1, 2019 Category: Neurology Authors: Ellyn A. Riley, Ying Wu Source Type: research

Neurocognitive Recovery of Sentence Processing in Aphasia.
Conclusions Sentence processing treatment results in improved comprehension and production of complex syntactic structures in chronic agrammatism and generalization to less complex, linguistically related structures in chronic agrammatism. Patients also show treatment-induced shifts toward normal-like online sentence processing routines (based on eye movement data) and changes in neural recruitment patterns (based on functional neuroimaging), with posttreatment activation of regions overlapping with those within sentence processing and dorsal attention networks engaged by neurotypical adults performing the same task. These...
Source: Journal of speech, language, and hearing research : JSLHR - November 21, 2019 Category: Speech-Language Pathology Authors: Thompson CK Tags: J Speech Lang Hear Res Source Type: research

Investigating Attentional Allocation With Eye Tracking During Category Learning in People With Aphasia
In this study, no differences were observed between individuals with aphasia and control participants on behavioral measures of accuracy and response time, though accuracies overall were lower than those of prior studies examining this task in young adults. Eye gaze data demonstrated that over the course of training, controls and individuals with aphasia learned to reduce the number of looks to the feature of lowest diagnosticity, suggestive of optimized attentional allocation. Eye gaze patterns, however, did not show increased looking or look times to all features of highest diagnosticity, which has been seen in young adu...
Source: Topics in Language Disorders - January 1, 2020 Category: Speech-Language Pathology Tags: Original Articles Source Type: research

Aphasia in neurology practice: A survey about perceptions and practices
Conclusion: The thrust areas, pertaining to gaps in perception and practices identified through this study, can be viewed as “an in-time input.” We hope that changes in some of the perceptions and practices can be attained through an emphasis on education and training at multiple levels right from the undergraduate to the practicing physicians. A few more themes and domains will need advocacy actions targeted to different stakeholders.
Source: Annals of Indian Academy of Neurology - September 24, 2020 Category: Neurology Authors: Apoorva Pauranik Nipun Pauranik Pinki Singh Durjoy Lahiri Gopee Krishnan Source Type: research

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