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Walker, Grant M.; Schwartz, Myrna F.; Kimberg, Daniel Y.; Faseyitan, Olufunsho; Brecher, Adelyn; Dell, Gary S.; Coslett, H. Branch – Brain and Language, 2011
Semantic errors in aphasia (e.g., naming a horse as "dog") frequently arise from faulty mapping of concepts onto lexical items. A recent study by our group used voxel-based lesion-symptom mapping (VLSM) methods with 64 patients with chronic aphasia to identify voxels that carry an association with semantic errors. The strongest associations were…
Descriptors: Evidence, Semantics, Aphasia, Patients
Buchsbaum, Bradley R.; Baldo, Juliana; Okada, Kayoko; Berman, Karen F.; Dronkers, Nina; D'Esposito, Mark; Hickok, Gregory – Brain and Language, 2011
Conduction aphasia is a language disorder characterized by frequent speech errors, impaired verbatim repetition, a deficit in phonological short-term memory, and naming difficulties in the presence of otherwise fluent and grammatical speech output. While traditional models of conduction aphasia have typically implicated white matter pathways,…
Descriptors: Sensory Integration, Phonology, Aphasia, Patients
Ash, Sharon; McMillan, Corey; Gunawardena, Delani; Avants, Brian; Morgan, Brianna; Khan, Alea; Moore, Peachie; Gee, James; Grossman, Murray – Brain and Language, 2010
The nature and frequency of speech production errors in neurodegenerative disease have not previously been precisely quantified. In the present study, 16 patients with a progressive form of non-fluent aphasia (PNFA) were asked to tell a story from a wordless children's picture book. Errors in production were classified as either phonemic,…
Descriptors: Phonetics, Phonemics, Patients, Language Processing
Duman, Tuba Yarbay; Bastiaanse, Roelien – Brain and Language, 2009
This study tested the production of tensed finite verbs and participles referring to the past and future in agrammatic speakers of Turkish. The agrammatic speakers did not make more time reference errors in tensed verbs than in participles. This is interesting because tense in general cannot therefore be the main problem, since time reference for…
Descriptors: Verbs, Turkish, Neurolinguistics, 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
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
de Bree, Elise; Janse, Esther; van de Zande, Anne Marie – Brain and Language, 2007
This paper investigates stress assignment in Dutch aphasic patients in non-word repetition, as well as in real-word and non-word reading. Performance on the non-word reading task was similar for the aphasic patients and the control group, as mainly regular stress was assigned to the targets. However, there were group differences on the real-word…
Descriptors: Control Groups, Aphasia, Error Patterns, Patients
Moses, Melanie S.; Nickels, Lyndsey A.; Sheard, Christine – Brain and Language, 2004
In this study, the recurrent perseverative errors produced by 44 speakers without impairment were examined in picture naming and reading aloud tasks under a fast response deadline. The proportion of perseverative relative to non-perseverative errors was greater in picture naming, the more error-prone task, than in reading aloud. Additionally,…
Descriptors: Aphasia, Language Processing, Error Patterns
Faroqi-Shah, Yasmeen; Thompson, Cynthia K. – Brain and Language, 2004
Verb inflection errors, often seen in agrammatic aphasic speech, have been attributed to either impaired encoding of diacritical features that specify tense and aspect, or to impaired affixation during phonological encoding. In this study we examined the effect of semantic markedness, word form frequency and affix frequency, as well as accuracy…
Descriptors: Verbs, Semantics, Error Patterns, Aphasia
Nasti, Marianna; Marangolo, Paola – Brain and Language, 2005
We report the case of a patient who showed a marked deficit in compound reading after almost complete recovery from his aphasic disturbances. Omission of one of the two compound components was his most frequent type of error. The patient also produced many paraphasias, which always respected the compound structure of the target. Similar errors…
Descriptors: Aphasia, Reading Difficulties, Patients, Case Studies
Bastiaanse, Roelien; Edwards, Susan – Brain and Language, 2004
The effect of two linguistic factors in Broca's and Wernicke's aphasia was examined using Dutch and English subjects. Three tasks were used to test (1) the comprehension and (2) the construction of sentences, where verbs (in Dutch) and verb arguments (in Dutch and English) are in canonical versus non-canonical position; (3) the production of…
Descriptors: Indo European Languages, Verbs, Word Order, Speech Impairments
Colangelo, Annette; Holden, John G.; Buchanan, Lori; Van Orden, Guy C. – Brain and Language, 2004
This article contrasts aphasic patients' performance of word naming and lexical decision with that of intact college-aged readers. We discuss this contrast within a framework of self-organization; word recognition by aphasic patients is destabilized relative to intact performance. Less stable performance shows itself as an increase in the…
Descriptors: Aphasia, Patients, College Students, Word Frequency