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Faroqi-Shah, Yasmeen – Neuropsychologia, 2008
Errors in the production of verb inflections, especially tense inflections, are pervasive in agrammatic Broca's aphasia ("*The boy eat"). The neurolinguistic underpinnings of these errors are debated. One group of theories attributes verb inflection errors to disruptions in encoding the verb's morphophonological form, resulting from either a…
Descriptors: Sentences, Semantics, Verbs, Aphasia
Bormann, Tobias; Kulke, Florian; Wallesch, Claus-W.; Blanken, Gerhard – Brain and Language, 2008
Within a discrete two-stage model of lexicalization, semantic errors and errors of omission are assumed to be independent events. In contrast, cascading and interactive models allow for an influence of word form on lexical selection and thus for an inherent relationship in accounting for both error types. A group of 17 aphasic patients was…
Descriptors: Semantics, Aphasia, Patients, Semiotics
Erdeljac, Vlasta; Sekulic, Martina – Clinical Linguistics & Phonetics, 2008
This paper examines the relative values of syntactic-semantic relationships in the mental lexicon of aphasic patients, which were tested within syntagmatic and paradigmatic networks of lexical relations. Semantic relations, such as synonymy, antonomy, and hyperonymy, as well as collocational and coordinational syntactic-semantic relations, were…
Descriptors: Control Groups, Sentences, Semantics, Form Classes (Languages)
Hoffman, Paul; Jefferies, Elizabeth; Ehsan, Sheeba; Hopper, Samantha; Lambon Ralph, Matthew A. – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2009
Semantic short-term memory (STM) patients have a reduced ability to retain semantic information over brief delays but perform well on other semantic tasks; this pattern suggests damage to a dedicated buffer for semantic information. Alternatively, these difficulties may arise from mild disruption to domain-general semantic processes that have…
Descriptors: Semantics, Short Term Memory, Patients, Aphasia
Hodgson, Catherine; Lambon Ralph, Matthew A. – Brain and Language, 2008
Semantic errors are commonly found in semantic dementia (SD) and some forms of stroke aphasia and provide insights into semantic processing and speech production. Low error rates are found in standard picture naming tasks in normal controls. In order to increase error rates and thus provide an experimental model of aphasic performance, this study…
Descriptors: Speech Impairments, Neurological Impairments, Error Patterns, Visual Stimuli
Cano, Agnes; Rapp, Brenda; Costa, Albert; Juncadella, Montserrat – Neuropsychologia, 2008
We describe the performance of an aphasic individual who showed a selective impairment affecting his comprehension of auditorily presented number words and not other word categories. His difficulty in number word comprehension was restricted to the auditory modality, given that with visual stimuli (written words, Arabic numerals and pictures) his…
Descriptors: Visual Stimuli, Semantics, Number Concepts, Auditory Stimuli
Kiran, Swathi; Lebel, Keith R. – Clinical Linguistics & Phonetics, 2007
The present study examined lexical representation in early Spanish-English bilinguals using an unmasked semantic and translation priming paradigm. In Experiment 1, participants were divided into two groups based on performance (more-balanced bilinguals, MB and less-balanced bilinguals, LB) on the experimental task. In Experiment 2, four patients…
Descriptors: Patients, Translation, Bilingualism, Aphasia
Spironelli, Chiara; Angrilli, Alessandro – Neuropsychologia, 2009
In this study spectral delta percentage was used to assess both brain dysfunction/inhibition and functional linguistic impairment during different phases of word processing. To this aim, EEG delta amplitude was measured in 17 chronic non-fluent aphasic patients while engaged in three linguistic tasks: Orthographic, Phonological and Semantic.…
Descriptors: Semantics, Linguistics, Aphasia, Inhibition
Brambati, S. M.; Ogar, J.; Neuhaus, J.; Miller, B. L.; Gorno-Tempini, M. L. – Neuropsychologia, 2009
Previous neuropsychological studies on acquired dyslexia revealed a double dissociation in reading impairments. Patients with phonological dyslexia have selective difficulty in reading pseudo-words, while those with surface dyslexia misread exception words. This double dissociation in reading abilities has often been reported in brain-damaged…
Descriptors: Behavioral Science Research, Semantics, Dementia, Dyslexia
Jefferies, Elizabeth; Hoffman, Paul; Jones, Roy; Lambon Ralph, Matthew A. – Journal of Memory and Language, 2008
This study presents the first direct comparison of immediate serial recall in semantic dementia (SD) and transcortical sensory aphasia (TSA). Previous studies of the effect of semantic impairment on verbal short-term memory (STM) have led to important theoretical advances. However, different conclusions have been drawn from these two groups. This…
Descriptors: Phonemes, Phonology, Semantics, Dementia
Wilshire, Carolyn E.; Keall, Leonie M.; Stuart, Elizabeth J.; O'Donnell, Debra J. – Neuropsychologia, 2007
In this study, we use an auditory picture-word interference task to examine an anomic individual, NP. NP produced semantic errors in picture naming, but his comprehension was relatively well preserved. In the task, pictures to be named were accompanied by semantically, phonologically or unrelated distractors, presented at onsets ranging from…
Descriptors: Aphasia, Language Processing, Identification, Visual Aids
Fridriksson, Julius; Moser, Dana; Bonilha, Leonardo; Morrow-Odom, K. Leigh; Shaw, Heather; Fridriksson, Astrid; Baylis, Gordon C.; Rorden, Chris – Neuropsychologia, 2007
Most naming treatments in aphasia either assume a phonological or semantic emphasis or a combination thereof. However, it is unclear whether semantic or phonological treatments recruit the same or different cortical areas in chronic aphasia. Employing three persons with aphasia, two of whom were non-fluent, the present study compared changes in…
Descriptors: Semantics, Phonology, Brain, Neurological Organization
Rider, Jill Davis; Wright, Heather Harris; Marshall, Robert C.; Page, Judith L. – American Journal of Speech-Language Pathology, 2008
Purpose: Semantic feature analysis (SFA) was used to determine whether training contextually related words would improve the discourse of individuals with nonfluent aphasia in preselected contexts. Method: A modified multiple-probes-across-behaviors design was used to train target words using SFA in 3 adults with nonfluent aphasia. Pretreatment,…
Descriptors: Semantics, Aphasia, Vocabulary, Adults
A Case-Series Test of the Interactive Two-Step Model of Lexical Access: Evidence from Picture Naming
Schwartz, Myrna F.; Dell, Gary S.; Martin, Nadine; Gahl, Susanne; Sobel, Paula – Journal of Memory and Language, 2006
Many facts about aphasic and nonaphasic naming are explained by models that use spreading activation to map from the semantics of a word to its phonology. The implemented model of picture naming discussed here achieves this by coupling interactive feedback with two selection steps. The model's structure and default parameters were set up to match…
Descriptors: Semantics, Phonology, Aphasia, Case Studies
Wong, Winsy; Low, Sam-Po – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2008
The present study investigated verbal recall of semantically preserved and degraded words and nonwords by taking into consideration the status of one's semantic short-term memory (STM). Two experiments were conducted on 2 Chinese individuals with aphasia. The first experiment showed that they had largely preserved phonological processing abilities…
Descriptors: Semantics, Aphasia, Short Term Memory, Recall (Psychology)