Measurements of auditory-verbal STM span in aphasia: Effects of item, task, and lexical impairment

  title={Measurements of auditory-verbal STM span in aphasia: Effects of item, task, and lexical impairment},
  author={Nadine Martin and Jennifer Ayala},
  journal={Brain and Language},
In the first part of this study, we investigated effects of item and task type on span performance in a group of aphasic individuals with word processing and STM deficits. Group analyses revealed significant effects of item on span performance with span being greater for digits than for words. We also investigated associations between subjects' lexical-semantic and phonological processing abilities and performance on four measures of verbal span (digit and word span, each varied for type of… Expand
Links Between Short-Term Memory and Word Retrieval in Aphasia.
Results suggest that word retrieval and verbal STM tasks likely rely on a partially shared temporary linguistic activation process that is based on an interactive activation language processing model. Expand
Effects of working memory load on processing of sounds and meanings of words in aphasia
Increased verbal WM load significantly reduced accuracy of performance on synonymy and rhyming judgements and semantic STM and one executive function, inhibition ability, emerged as the strongest predictors of theverbal WM load effect in these judgement tasks for individuals with aphasia. Expand
Assessment of linguistic and verbal short-term memory components of language abilities in aphasia
Some current models of aphasia emphasize a role of short-term memory in the processing of language and propose that the language impairment in aphasia involves impairment to cognitive processes thatExpand
Spoken-word processing in aphasia: Effects of item overlap and item repetition
  • E. Janse
  • Medicine, Psychology
  • Brain and Language
  • 2008
Results show that deactivation is a fast process and poor performance on diagnostic verbal STM tasks was shown to be related to lexical decision performance in both overlap and repetition conditions, which suggests a common underlying deficit. Expand
Influence of working memory on stimulus generalization in anomia treatment: A pilot study
Abstract Neuropsychological testing of distinct cognitive domains holds promise as a prognostic indicator of aphasia therapy success; however, it is unclear the degree to which cognitive assessmentsExpand
Treatment of verbal short-term memory abilities to improve language function in aphasia: A case series treatment study
This study investigated whether a treatment involving repetition of word sequences after a response delay would improve tolerance of increased verbal STM load in repetition and, consequently, improve performance on repetition and other language tasks. Expand
The heterogeneity of verbal short-term memory impairment in aphasia
These results disconfirm a strong version of the linguistic account ofverbal STM impairment in aphasia, by showing variable impairment to both item and serial order processing aspects of verbal STM. Expand
Short-term memory treatment: Patterns of learning and generalisation to sentence comprehension in a person with aphasia
  • C. Salis
  • Psychology, Medicine
  • Neuropsychological rehabilitation
  • 2012
Improvements in sentence comprehension may have resulted from resilience to rapid decay of linguistic representations within sentences (words and phrases), which in turn facilitated comprehension. Expand
Short-term/working memory impairments in aphasia: Data, models, and their application to aphasia rehabilitation
Much of the extant research in language processing and language impairment has focused on elements of linguistic representation that are accessed and retrieved in comprehension, repetition, andExpand
Measuring working memory deficits in aphasia.
These data are consistent with WM deficits in aphasia, for which the n-back task holds promise for clinical quantification. Expand


Language and Auditory-verbal Short-term Memory Impairments: Evidence for Common Underlying Processes
We report an investigation of the short-term memory STM impairments of 15 aphasic subjects whose language profiles varied with respect to the relative involvement of lexical-semantic and phonologicalExpand
Effects of Word Processing and Short‐term Memory Deficits on Verbal Learning: Evidence from Aphasia
We report two experiments that investigate the abilities of aphasic subjects with lexical and short-term memory impairments to learn supraspan lists of 10 words. We examined effects of stimulusExpand
Language Processing and Working Memory: Neuropsychological Evidence for Separate Phonological and Semantic Capacities
Abstract The short-term memory and sentence-processing abilities of two brain-damaged patients were investigated. Although both patients showed similar reductions in span, one patient showed worseExpand
Recovery in Deep Dysphasia: Evidence for a Relation between Auditory–Verbal STM Capacity and Lexical Errors in Repetition
In a series of computer simulation and empirical studies, it is shown that NC's repetition performance can be accounted for by varying two parameters of an interactive activation model of repetition adapted from Dell and O'Seaghdha's (1991) model of production: decay rate and temporal interval. Expand
Neuropsychological and computational evidence for a model of lexical processing, verbal short-term memory and learning
Evidence from aphasia is reviewed supporting the view that verbal STM processes are inextricably linked with the lexical processing system (as opposed to drawing solely on an independent shortterm memory system), which is a foundation for the development of a new model of word processing, verbalSTM and learning. Expand
Verbal and Non-Verbal Short-Term Memory Impairment Following Hemispheric Damage
Two patients with an exceedingly poor verbal memory span were observed and two right hemisphere damaged patients who showed an extreme reduction of spatial span, which could not be accounted for by space perceptual disorders and contrasted with a normal performance on a spatial long-term memory test. Expand
Neuropsychological impairments of short-term memory
List of contributors Acknowledgements General introduction Part I. The Functional Architecture of Auditory-Verbal (Phonological) Short-Term Memory and its Neural Correlates: 1. The impairment ofExpand
Dissociable components of short-term memory and their relation to long-term learning
Results suggest that the semantic and phonological components of STM are essential for the long- term learning of corresponding representations in long-term memory. Expand
The relationship of input and output phonological processing: An evaluation of models and evidence to support them
The means by which an interactive activation model that assumes a single phonological network or functionally connected input and output phonological networks could account for apparent dissociations of these two pathways are discussed. Expand
Memory for familiar and unfamiliar words: Evidence for a long-term memory contribution to short-term memory span
Abstract Two experiments are described which demonstrate a long-term memory contribution to memory span. In the first experiment nonwords were used because they lack a long-term memoryExpand