Perceptual Characteristics of Vowel and Prosody Production in Apraxic, Aphasic, and Dysarthric Speakers

1991 ◽  
Vol 34 (1) ◽  
pp. 67-80 ◽  
Author(s):  
Katharine Odell ◽  
Malcolm R. McNeil ◽  
John C. Rosenbek ◽  
Linda Hunter
Keyword(s):  
Initial Position ◽  
Word Production ◽  
Error Pattern ◽  
Prosodic Features ◽  
Single Word ◽  
Error Patterns ◽  
Word Level ◽  
Monosyllabic Words ◽  
Perceptual Characteristics

Narrow phonetic transcriptions and prosodic judgments were made of single-word imitations by apraxic (AOS), conduction aphasic (CA), and ataxic dysarthric (AD) speakers. AOS and AD subjects showed similar vowel error patterns, particularly predominant errors in low, tense, and back vowels, more distortions than other types of vowel errors, and predominant errors in initial position of words and in monosyllabic words. The CA subjects displayed a different vowel error pattern, notably more substitutions than distortions, more errors in polysyllabic than monosyllabic words, and more errors in noninitial than initial positions of words. Analysis of prosodic features identifiable at the single-word level (e.g., syllabic stress, juncture, and struggles to initiate or complete productions) indicated that syllabic stress errors and more difficulty initiating than completing word production were characteristic of AOS and AD but not CA subjects.

Content Coverage of Single-Word Tests Used to Assess Common Phonological Error Patterns

2015 ◽  
Vol 46 (1) ◽  
pp. 14-29 ◽  
Author(s):  
Cecilia Kirk ◽  
Laura Vigeland
Keyword(s):  
Final Position ◽  
Error Pattern ◽  
Single Word ◽  
Error Patterns ◽  
Criterion Level ◽  
Content Coverage ◽  
Cluster Reduction

Purpose This review evaluated whether 9 single-word tests of phonological error patterns provide adequate content coverage to accurately identify error patterns that are active in a child's speech. Method Tests in the current study were considered to display sufficient opportunities to assess common phonological error patterns if they provided at least 4 opportunities for each of 11 error patterns. The target phonemes for these error patterns had to occur as singletons (except for final consonant deletion and cluster reduction) and in stressed syllables (except for weak syllable deletion). Error patterns for which positional asymmetries have been documented (velar fronting, stopping of fricatives and affricates, and cluster reduction) required 4 opportunities in both word-initial and word-final position to meet the study's criterion. Results None of the tests provided 4 opportunities for every error pattern, the criterion level used in this study. Error patterns that tended to be underrepresented across tests included weak syllable deletion, reduction of word-final clusters, fronting of velars, gliding of liquids, and deaffrication. Conclusion This review will allow clinicians to gain a deeper understanding of the methods used to assess phonological error patterns in single-word tests.

Perceptual Characteristics of Consonant Production by Apraxic Speakers

1990 ◽  
Vol 55 (2) ◽  
pp. 345-359 ◽  
Author(s):  
Katharine Odell ◽  
Malcolm R. McNeil ◽  
John C. Rosenbek ◽  
Linda Hunter
Keyword(s):  
Speech Production ◽  
Error Rate ◽  
System Analysis ◽  
Apraxia Of Speech ◽  
Single Word ◽  
Transcription System ◽  
Phonetic Transcription ◽  
Production Models ◽  
Monosyllabic Words ◽  
Perceptual Characteristics

Single-word repetitions by 4 brain-damaged adults with apraxia of speech (AOS) but without concomitant aphasia were transcribed using a standard narrow phonetic transcription system. Analysis of consonant productions yielded a profile of AOS slightly different from the traditionally accepted one. Among the results was the atypical finding that consonant distortions exceeded all other error types including sound substitutions. In addition, errors predominated in the medial position of words, and monosyllabic words had approximately the same error rate per number of consonants as did multisyllabic words. Results are discussed with reference to previous perceptual descriptions of AOS and in relationship to Broca's aphasia. Results are also interpreted relative to linguistic and motoric components of speech production models.

scholarly journals Who Did What and When? Using Word- and Clause-Level ERPs to Monitor Working Memory Usage in Reading

1995 ◽  
Vol 7 (3) ◽  
pp. 376-395 ◽  
Author(s):  
Jonathan W. King ◽  
Marta Kutas
Keyword(s):  
Working Memory ◽  
Sentence Type ◽  
Syntactic Complexity ◽  
Memory Usage ◽  
Single Word ◽  
Word Level ◽  
Poor Comprehenders ◽  
Anterior Negativity ◽  
Object Relative

ERPs were recorded from 24 undergraduates as they read sentences known to differ in syntactic complexity and working memory requirements, namely Object and Subject Relative sentences. Both the single-word and multiword analyses revealed significant differences due to sentence type, while multiword ERPs also showed that sentence type effects differed for Good and Poor comprehenders. At the single-word level, ERPs to both verbs in Object Relative sentences showed a left anterior negativity between 300 and 500 msec postword-onset relative to those to Subject Relative verbs. At the multiword level, a slow frontal positivity characterized Subject Relative sentences, but was absent for Object Relatives. This slow positivity appears to index ease of processing or integration. and was more robust in Good than in Poor comprehenders.

Phonetic Encoding Contributes to the Processing of Linguistic Prosody at the Word Level: Cross-Linguistic Evidence From Event-Related Potentials

2021 ◽  
pp. 1-11
Author(s):  
Luodi Yu ◽  
Jiajing Zeng ◽  
Suiping Wang ◽  
Yang Zhang
Keyword(s):  
Auditory Processing ◽  
Event Related Potentials ◽  
Event Related Potential ◽  
Acoustic Cues ◽  
Prosodic Features ◽  
Speech Stimuli ◽  
Word Level ◽  
Acoustic Control ◽  
Related Potentials ◽  
Prosodic Phonology

Purpose This study aimed to examine whether abstract knowledge of word-level linguistic prosody is independent of or integrated with phonetic knowledge. Method Event-related potential (ERP) responses were measured from 18 adult listeners while they listened to native and nonnative word-level prosody in speech and in nonspeech. The prosodic phonology (speech) conditions included disyllabic pseudowords spoken in Chinese and in English matched for syllabic structure, duration, and intensity. The prosodic acoustic (nonspeech) conditions were hummed versions of the speech stimuli, which eliminated the phonetic content while preserving the acoustic prosodic features. Results We observed language-specific effects on the ERP that native stimuli elicited larger late negative response (LNR) amplitude than nonnative stimuli in the prosodic phonology conditions. However, no such effect was observed in the phoneme-free prosodic acoustic control conditions. Conclusions The results support the integration view that word-level linguistic prosody likely relies on the phonetic content where the acoustic cues embedded in. It remains to be examined whether the LNR may serve as a neural signature for language-specific processing of prosodic phonology beyond auditory processing of the critical acoustic cues at the suprasyllabic level.

scholarly journals Comparing the cognate effect in spoken and written second language word production

2019 ◽  
Author(s):  
Merel Muylle ◽  
Eva Van Assche ◽  
Robert Hartsuiker
Keyword(s):  
Second Language ◽  
Picture Naming ◽  
Language Production ◽  
Naming Task ◽  
Written Language ◽  
Word Production ◽  
Error Pattern ◽  
Underlying Processes

Cognates – words that share form and meaning between languages – are processed faster than control words. However, it is unclear whether this effect is merely lexical (i.e., central) in nature, or whether it cascades to phonological/orthographic (i.e., peripheral) processes. This study compared the cognate effect in spoken and typewritten production, which share central, but not peripheral processes. We inquired whether this effect is present in typewriting, and if so, whether its magnitude is similar to spoken production. Dutch-English bilinguals performed either a spoken or written picture naming task in English; picture names were either Dutch-English cognates or control words. Cognates were named faster than controls and there was no cognate-by-modality interaction. Additionally, there was a similar error pattern in both modalities. These results suggest that common underlying processes are responsible for the cognate effect in spoken and written language production, and thus a central locus of the cognate effect.

Word form retrieval in language production

2007 ◽  
pp. 470-488 ◽  
Author(s):  
Antje S. Meyer ◽  
Eva Belke
Keyword(s):  
Language Production ◽  
Knowledge Building ◽  
Word Production ◽  
Word Form ◽  
Lexical Selection ◽  
Single Word ◽  
Phonological Representations ◽  
Phonological Knowledge ◽  
Phonetic Code ◽  
Selection Of

Current models of word form retrieval converge on central assumptions. They all distinguish between morphological, phonological, and phonetic representations and processes; they all assume morphological and phonological decomposition, and agree on the main processing units at these levels. In addition, all current models of word form postulate the same basic retrieval mechanisms: activation and selection of units. Models of word production often distinguish between processes concerning the selection of a single word unit from the mental lexicon and the retrieval of the associated word form. This article explores lexical selection and word form retrieval in language production. Following the distinctions in linguistic theory, it discusses morphological encoding, phonological encoding, and phonetic encoding. The article also considers the representation of phonological knowledge, building of phonological representations, segmental retrieval, retrieval of metrical information, generating the phonetic code of words, and a model of word form retrieval.

A multi-functional approach to single-word usage

1977 ◽  
Vol 4 (1) ◽  
pp. 23-43 ◽  
Author(s):  
Maris Monitz Rodgon ◽  
Wayne Jankowski ◽  
Lucias Alenskas
Keyword(s):  
Individual Differences ◽  
Language Acquisition ◽  
Functional Approach ◽  
Word Production ◽  
Developmental Changes ◽  
Single Word ◽  
Dimensional Approach ◽  
Word Usage ◽  
Child Interaction ◽  
Parent Child Interaction

ABSTRACTLanguage is conceptualized as a multi-dimensional entity which involves symbolic and cognitive aspects, communicative aspects, and structural-linguistic aspects, both syntactic and semantic. The child's task during acquisition is to become aware of, to understand, and to operate according to convention in these three spheres. Analysis of the single-word production of three children revealed developmental changes in the salience of the three aspects and individual differences in functional styles of language acquisition. Use of the multi-dimensional approach also revealed differences in the relations between language, overt action, and a child's tendency to talk about action. Many differences, particularly in communicative style, were related to differences in parent–child interaction.

Dysarthria of Adult Cerebral Palsy

1980 ◽  
Vol 23 (1) ◽  
pp. 41-55 ◽  
Author(s):  
L. J. Platt ◽  
Gavin Andrews ◽  
Pauline M. Howie
Keyword(s):  
Cerebral Palsy ◽  
Speech Intelligibility ◽  
Confusion Matrix ◽  
Initial Position ◽  
Final Position ◽  
Single Word ◽  
Speech Task ◽  
Position Errors ◽  
Confusion Matrices

The articulation errors of 32 spastic and 18 athetoid males, aged 17–55 years, were analyzed using a confusion matrix paradigm. The subjects had a diagnosis of congenital cerebral palsy, and adequate intelligence, hearing, and ability to perform the speech task. Phonetic transcriptions were made of single-word utterances which contained 49 selected phonemes: 22 word-initial consonants, 18 word-final consonants and nine vowels. Errors of substitution, omission and distortion were categorized on confusion matrices such that patterns could be observed. It was found that within-manner errors (place or voicing errors or both) exceeded between-manner errors by a substantial amount, more so on final consonants. The predominant within-manner errors occurred on fricative phonemes for both initial and final positions. Affricate within-manner errors, all of devoicing, were also frequent in final position. The predominant between-manner initial position errors involved liquid-to-glide and affricate-to-stop changes, and for final position, affricate-to-fricative. Phoneme omission occurred three times more frequently on final than on initial consonants. The error data of individual subjects were found to correspond with the identified overall group patterns. Those with markedly reduced speech intelligibility demonstrated the same patterns of error as the overall group. The implications for treatment are discussed.

Distinctions between two phonological output deficits

1994 ◽  
Vol 15 (1) ◽  
pp. 75-95 ◽  
Author(s):  
Susan E. Kohn ◽  
Katherine L. Smith
Keyword(s):  
Behavioral Pattern ◽  
Word Production ◽  
Phonological Encoding ◽  
Single Word ◽  
Phonological Representations ◽  
Behavioral Features ◽  
Phonemic Representations ◽  
Two Stages ◽  
Phonological Activation ◽  
Phonological System

ABSTRACTTwo aphasics with a similar level of phonological production difficulty are compared to distinguish the properties of disruption to two stages in the phonological system for producing single words: activation of stored lexical-phonological representations versus construction of phonemic representations. A set of distinguishing behavioral features for breakdown at each stage is generated on the basis of a model of single word production. Important variables for analyzing output include: (a) the unit of phonological encoding (morpheme versus syllable), (b) the phonemic relationship between targets and responses, (c) the effects of target consonant-vowel (CV) structure, and (d) the level of pseudoword production. On a set of production tests, the expected behavioral pattern for impaired lexical-phonological activation was displayed by LW, while the expected behavioral pattern for impaired phonemic planning was displayed by CM.

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