The Processing of Printed Language by Aphasic Adults

1982 ◽  
Vol 25 (2) ◽  
pp. 314-319 ◽  
Author(s):  
John L. Locke ◽  
John W. Deck

Eight aphasic and eight brain-damaged nonaphasie patients silently "read" a short passage while performing an internal search for specified consonant letters of varying phonological and syntactic salience. The nonaphasie patients showed the phonological and syntactic effects customarily achieved by normal readers. For example, they were more likely to find a letter if it were pronounced than if it were silent, and they were more likely to find a letter if it were in a content word than in a function word. The aphasics had reliable phonological effects hut no observable syntactic effects. Those aphasics with relatively large phonological effects performed better on a separate task requiring the oral reading of isolated words. For reading theory, the primary message from this study is that phonological recoding may occur between word recognition and the completion of semantic analysis, and that recoding may not by itself be sufficient to reading for meaning. For aphasia theory, the main implication of this study is that aphasics read by applying the appropriate phonological strategies, but that such strategies are limited in the face of ineffective syntactic and semantic processing, as occurs in aphasia.

1987 ◽  
Vol 19 (1) ◽  
pp. 33-47 ◽  
Author(s):  
Herbert D. Simons ◽  
Donald J. Leu

This study evaluated the relative importance of graphic and contextual information in word recognition as well as the relative importance of several specific sources of contextual information (lexical, semantic, syntactic, discourse) among students at three different grade levels (second, fourth, and sixth). In addition, word recognition behavior was compared at both target word locations where various aspects of context were disrupted and at non-target word locations where naturally occurring oral reading errors appeared. Results indicated that all students used greater graphic than contextual information at target word locations. The use of graphic information during word recognition tended to increase with development. The use of contextual information tended to decrease with development. These results are interpreted as being generally consistent with recent work by Stanovich (1980) and others who emphasize the importance of automatic context-free word recognition ability. Context use at non-target word locations occurred largely at function word locations that were rich in syntactic context. These results suggest that word recognition processing varies not only with the proficiency level of a reader, as Stanovich's model suggests, but also with the amount of contextual richness that surrounds any particular word.


2017 ◽  
Vol 49 (3) ◽  
pp. 296
Author(s):  
Simin ZHAO ◽  
Yan WU ◽  
Tianhong LI ◽  
Qingtong GUO

2000 ◽  
Vol 12 (4) ◽  
pp. 622-634 ◽  
Author(s):  
Matti Laine ◽  
Riitta Salmelin ◽  
Päivi Helenius ◽  
Reijo Marttila

Magnetoencephalographic (MEG) changes in cortical activity were studied in a chronic Finnish-speaking deep dyslexic patient during single-word and sentence reading. It has been hypothesized that in deep dyslexia, written word recognition and its lexical-semantic analysis are subserved by the intact right hemisphere. However, in our patient, as well as in most nonimpaired readers, lexical-semantic processing as measured by sentence-final semantic-incongruency detection was related to the left superior-temporal cortex activation. Activations around this same cortical area could be identified in single-word reading as well. Another factor relevant to deep dyslexic reading, the morphological complexity of the presented words, was also studied. The effect of morphology was observed only during the preparation for oral output. By performing repeated recordings 1 year apart, we were able to document significant variability in both the spontaneous activity and the evoked responses in the lesioned left hemisphere even though at the behavioural level, the patient's performance was stable. The observed variability emphasizes the importance of estimating consistency of brain activity both within and between measurements in brain-damaged individuals.


2015 ◽  
Vol 49 (6) ◽  
pp. 889-897 ◽  
Author(s):  
Elisabete Mesquita Peres de Carvalho ◽  
Leila Bernarda Donato Göttems ◽  
Maria Raquel Gomes Maia Pires

Abstract OBJECTIVE To describe the stages of construction and validation of an instrument in order to analyze the adherence to best care practices during labour and birth. METHOD Methodological research, carried out in three steps: construction of dimensions and items, face and content validity and semantic analysis of the items. RESULTS The face and content validity was carried out by 10 judges working in healthcare, teaching and research. Items with Content Validity Index (CVI) ≥ 0.9 were kept in full or undergone revisions as suggested by the judges. Semantic analysis, performed twice, indicated that there was no difficulty in understanding the items. CONCLUSION The instrument with three dimensions (organization of healthcare network to pregnancy and childbirth, evidence-based practices and work processes) followed the steps recommended in the literature, concluded with 50 items and total CVI of 0.98.


1998 ◽  
Vol 41 (5) ◽  
pp. 1019-1030 ◽  
Author(s):  
James Au-Yeung ◽  
Peter Howell ◽  
Lesley Pilgrim

Stuttering on function words was examined in 51 people who stutter. The people who stutter were subdivided into young (2 to 6 years), middle (6 to 9 years), and older (9 to 12 years) child groups; teenagers (13 to 18 years); and adults (20 to 40 years). As reported by previous researchers, children up to about age 9 stuttered more on function words (pronouns, articles, prepositions, conjunctions, auxiliary verbs), whereas older people tended to stutter more on content words (nouns, main verbs, adverbs, adjectives). Function words in early positions in utterances, again as reported elsewhere, were more likely to be stuttered than function words at later positions in an utterance. This was most apparent for the younger groups of speakers. For the remaining analyses, utterances were segmented into phonological words on the basis of Selkirk’s work (1984). Stuttering rate was higher when function words occurred in early phonological word positions than other phonological word positions whether the phonological word appeared in initial position in an utterance or not. Stuttering rate was highly dependent on whether the function word occurred before or after the single content word allowed in Selkirk’s (1984) phonological words. This applied, once again, whether the phonological word was utterance-initial or not. It is argued that stuttering of function words before their content word in phonological words in young speakers is used as a delaying tactic when the forthcoming content word is not prepared for articulation.


2001 ◽  
Vol 13 (6) ◽  
pp. 829-843 ◽  
Author(s):  
A. L. Roskies ◽  
J. A. Fiez ◽  
D. A. Balota ◽  
M. E. Raichle ◽  
S. E. Petersen

To distinguish areas involved in the processing of word meaning (semantics) from other regions involved in lexical processing more generally, subjects were scanned with positron emission tomography (PET) while performing lexical tasks, three of which required varying degrees of semantic analysis and one that required phonological analysis. Three closely apposed regions in the left inferior frontal cortex and one in the right cerebellum were significantly active above baseline in the semantic tasks, but not in the nonsemantic task. The activity in two of the frontal regions was modulated by the difficulty of the semantic judgment. Other regions, including some in the left temporal cortex and the cerebellum, were active across all four language tasks. Thus, in addition to a number of regions known to be active during language processing, regions in the left inferior frontal cortex were specifically recruited during semantic processing in a task-dependent manner. A region in the right cerebellum may be functionally related to those in the left inferior frontal cortex. Discussion focuses on the implications of these results for current views regarding neural substrates of semantic processing.


Author(s):  
Sheila Blumstein

This article reviews current knowledge about the nature of auditory word recognition deficits in aphasia. It assumes that the language functioning of adults with aphasia was normal prior to sustaining brain injury, and that their word recognition system was intact. As a consequence, the study of aphasia provides insight into how damage to particular areas of the brain affects speech and language processing, and thus provides a crucial step in mapping out the neural systems underlying speech and language processing. To this end, much of the discussion focuses on word recognition deficits in Broca's and Wernicke's aphasics, two clinical syndromes that have provided the basis for much of the study of the neural basis of language. Clinically, Broca's aphasics have a profound expressive impairment in the face of relatively good auditory language comprehension. This article also considers deficits in processing the sound structure of language, graded activation of the lexicon, lexical competition, influence of word recognition on speech processing, and influence of sentential context on word recognition.


Sign in / Sign up

Export Citation Format

Share Document