Diana Van Lancker Sidtis

When novel sentences spoken or heard for the first time in the history of the universe are not enough: toward a dual‐process model of language

Although interest in the language sciences was previously focused on newly created sentences, more recently much attention has turned to the importance of formulaic expressions in normal and disordered communication. Also referred to as formulaic expressions and made up of speech formulas, idioms, expletives, serial and memorized speech, slang, sayings, cliches, and conventional expressions, non-propositional language forms a large proportion of every speakers competence, and may be differentially disturbed in neurological disorders. This review aims to examine non-propositional speech with respect to linguistic descriptions, psycholinguistic experiments, sociolinguistic studies, child language development, clinical language disorders, and neurological studies. Evidence from numerous sources reveals differentiated and specialized roles for novel and formulaic verbal functions, and suggests that generation of novel sentences and management of prefabricated expressions represent two legitimate and separable processes in language behaviour. A preliminary model of language behaviour that encompasses unitary and compositional properties and their integration in everyday language use is proposed. Integration and synchronizing of two disparate processes in language behaviour, formulaic and novel, characterizes normal communicative function and contributes to creativity in language. This dichotomy is supported by studies arising from other disciplines in neurology and psychology. Further studies are necessary to determine in what ways the various categories of formulaic expressions are related, and how these categories are processed by the brain. Better understanding of how non-propositional categories of speech are stored and processed in the brain can lead to better informed treatment strategies in language disorders.

Formulaic expressions in spontaneous speech of left- and right- hemisphere-damaged subjects

Background: The preservation of swearing, serial speech, and speech formulas is well documented in clinical descriptions of aphasia. Proper nouns and sentence stems have also been reported in the residual speech of severely aphasic subjects. The incidence of formulaic expressions in spontaneous speech of right‐hemisphere‐damaged subjects has not yet been well examined. Recent interest in formulaic expressions (FEs) in normal language use, combined with the converging evidence of a role for the right hemisphere in processing pragmatic elements of language, led to this study. Methods & Procedures: We undertook an examination of hypotheses about the hemispheric processing of FEs in the spontaneous speech of persons with left hemisphere (LH) and right hemisphere (RH) damage. Based on preserved use of formulaic expressions in clinically described aphasic speech, the hypothesis under examination in this study was that the intact RH has a role in the production of formulaic expressions. Further inquiries involved possible differences in incidence in the speech samples between subsets of FEs, such as proper nouns and discourse particles. Outcomes & Results: Our results indicate a greater proportion of FEs in the spontaneous speech of persons with LH damage, and proportionally fewer FEs in RH speech, when compared to normal control speakers. Examination of the incidence of separate categories indicates a paucity of proper noun production in the LH group, supporting the association of proper noun anomia with LH damage. Pragmatically determined vocal elements (pause fillers, discourse elements) were least present in RH dysfunction. These results suggest that clinical evaluation of formulaic as well as novel language functions may give important insights into the language disorder profile of various neurological populations. The identification of relatively preserved formulaic expressions in LH damage may provide a basis for a more effective treatment plan, while evaluation of RH damaged individuals using this perspective may identify communication disorders not previously recognised. Conclusions: These results support the notion that an intact RH supports use of some types of formulaic language.

Dysprosodic speech following basal ganglia insult: Toward a conceptual framework for the study of the cerebral representation of prosody.

Progress in understanding brain/behavior relationships in adult-acquired dysprosody has led to models of cortical hemispheric representation of prosodic processing based on functional (linguistic vs affective) or physical (timing vs pitch) parameters. These explanatory perspectives have not been reconciled, and also a number of neurobehavior syndromes that include dysprosody among their neurological signs have not yet been integrated. In addition to expanding the functional perspective on prosody, some of these syndromes have implicated a significant role of subcortical nuclei in prosodic competence. In this article, two patients with acquired dysprosodic speech following damage to basal ganglia nuclei were evaluated using behavioral, acoustic, cognitive, and radiographic approaches. Selective quantitative measures were performed on each individuals performance to provide detailed verification and clarification of clinical observations, and to test hypotheses regarding prosodic function. These studies, combined with a review of related clinical research findings, exemplify the value of a broader perspective on the neurobehavioral dysfunction underlying acquired adult dysprosodic speech, and lead to a new, proposed conceptual framework for the cerebral representation of prosody.

Does functional neuroimaging solve the questions of neurolinguistics

Abstract Neurolinguistic research has been engaged in evaluating models of language using measures from brain structure and function, and/or in investigating brain structure and function with respect to language representation using proposed models of language. While the aphasiological strategy, which classifies aphasias based on performance modality and a few linguistic variables, has been the most stable, cognitive neurolinguistics has had less success in reliably associating more elaborately proposed levels and units of language models with brain structure. Functional imaging emerged at this stage of neurolinguistic research. In this review article, it is proposed that the often-inconsistent superfluity of outcomes arising from functional imaging studies of language awaits adjustment at both “ends” of the process: model and data. Assumptions that our current language models consistently and reliably represent implicit knowledge within human cerebral processing are in line for major revision; and the promise of functional brain imaging to reveal any such knowledge structures must incorporate stable correlates of the imaging signal as dependent variable.

Effects of neurological damage on production of formulaic language

Early studies reported preserved formulaic language in left hemisphere damaged subjects and reduced incidence of formulaic expressions in the conversational speech of stroke patients with right hemispheric damage. Clinical observations suggest a possible role also of subcortical nuclei. This study examined formulaic language in the spontaneous speech of stroke patients with left, right, or subcortical damage. Four subjects were interviewed and their speech samples compared to normal speakers. Raters classified formulaic expressions as speech formulae, fillers, sentence stems, and proper nouns. Results demonstrated that brain damage affected novel and formulaic language competence differently, with a significantly smaller proportion of formulaic expressions in subjects with right or subcortical damage compared to left hemisphere damaged or healthy speakers. These findings converge with previous studies that support the proposal of a right hemisphere/subcortical circuit in the management of formulaic expressions, based on a dual‐process model of language incorporating novel and formulaic language use.

In the Beginning Was the Familiar Voice: Personally Familiar Voices in the Evolutionary and Contemporary Biology of Communication

The human voice is described in dialogic linguistics as an embodiment of self in a social context, contributing to expression, perception and mutual exchange of self, consciousness, inner life, and personhood. While these approaches are subjective and arise from phenomenological perspectives, scientific facts about personal vocal identity, and its role in biological development, support these views. It is our purpose to review studies of the biology of personal vocal identity—the familiar voice pattern—as providing an empirical foundation for the view that the human voice is an embodiment of self in the social context. Recent developments in the biology and evolution of communication are concordant with these notions, revealing that familiar voice recognition (also known as vocal identity recognition or individual vocal recognition) has contributed to survival in the earliest vocalizing species. Contemporary ethology documents the crucial role of familiar voices across animal species in signaling and perceiving internal states and personal identities. Neuropsychological studies of voice reveal multimodal cerebral associations arising across brain structures involved in memory, emotion, attention, and arousal in vocal perception and production, such that the voice represents the whole person. Although its roots are in evolutionary biology, human competence for processing layered social and personal meanings in the voice, as well as personal identity in a large repertory of familiar voice patterns, has achieved an immense sophistication.

Dramatic effects of speech task on motor and linguistic planning in severely dysfluent parkinsonian speech

In motor speech disorders, dysarthric features impacting intelligibility, articulation, fluency and voice emerge more saliently in conversation than in repetition, reading or singing. A role of the basal ganglia in these task discrepancies has been identified. Further, more recent studies of naturalistic speech in basal ganglia dysfunction have revealed that formulaic language is more impaired than novel language. This descriptive study extends these observations to a case of severely dysfluent dysarthria due to a parkinsonian syndrome. Dysfluencies were quantified and compared for conversation, two forms of repetition, reading, recited speech and singing. Other measures examined phonetic inventories, word forms and formulaic language. Phonetic, syllabic and lexical dysfluencies were more abundant in conversation than in other task conditions. Formulaic expressions in conversation were reduced compared to normal speakers. A proposed explanation supports the notion that the basal ganglia contribute to formulation of internal models for execution of speech.

Formulaic Language in Alzheimer's Disease.

Background: Studies of productive language in Alzheimers disease (AD) have focused on formal testing of syntax and semantics but have directed less attention to naturalistic discourse and formulaic language. Clinical observations suggest that individuals with AD retain the ability to produce formulaic language long after other cognitive abilities have deteriorated. Aims: This study quantifies production of formulaic expressions in the spontaneous speech of individuals with AD. Persons with early and late onset forms of the disease were compared. Methods & Procedures: Conversational language samples of individuals with early (n = 5) and late onset (n = 6) AD and healthy controls (n = 5) were analysed to determine whether formulaic language, as measured by the number of words in formulaic expressions, differs between groups. Outcomes & Results: Results indicate that individuals with AD, regardless of age of onset, used significantly more formulaic expressions than healthy controls. The early and late onset AD groups did not differ on formulaic language measures. Conclusions: These findings contribute to a dual process model of cerebral function, which proposes differing processing principles for formulaic and novel expressions. In this model, subcortical areas, which remain intact into late in the progression of Alzheimers disease, play an important role in the production of formulaic language. Applications to clinical practice include identifying preserved formulaic language and providing informed counselling to patient and family.

Formulaic Language and Language Disorders

The importance of formulaic language is recognized by many branches of the language sciences. Second language learners acquire a language using a maturationally advanced neurological substrate, leading to a profile of formulaic language use and knowledge that differs from that of the prepuberty learner. Unlike the considerable interest in formulaic language seen in second language learning, attention paid to this theme in clinical communicative disorders has been limited. Historically, verbal expressions preserved in severe nonfluent aphasia, including counting, interjections, and memorized phrases, have been referred to as automatic speech . Closer examination of all forms of aphasic speech reveals a high proportion of formulaic expressions, while speech samples from persons with right hemisphere and subcortical damage show a significant impoverishment. These findings are supported by studies of persons with Alzheimers disease, who have intact subcortical nuclei and abnormally high proportions of formulaic expressions, and Parkinsons disease, which is characterized by dysfunctional subcortical systems and impoverished formulaic language. Preliminary studies of schizophrenic speech also reveal a paucity of formulaic language. A dissociation between knowledge and use of the expressions is found in some of these populations. Observations in clinical adult subjects lead to a profile of cerebral function underlying production of novel and formulaic language, known as the dual processing model. Whereas the left hemisphere modulates newly created language, production of formulaic language is dependent on a right hemisphere/subcortical circuit. Implications of the dual process model for evaluation and treatment of language disorders are discussed.The importance of formulaic language is recognized by many branches of the language sciences. Second language learners acquire a language using a maturationally advanced neurological substrate, leading to a profile of formulaic language use and knowledge that differs from that of the prepuberty learner. Unlike the considerable interest in formulaic language seen in second language learning, attention paid to this theme in clinical communicative disorders has been limited. Historically, verbal expressions preserved in severe nonfluent aphasia, including counting, interjections, and memorized phrases, have been referred to as automatic speech. Closer examination of all forms of aphasic speech reveals a high proportion of formulaic expressions, while speech samples from persons with right hemisphere and subcortical damage show a significant impoverishment. These findings are supported by studies of persons with Alzheimers disease, who have intact subcortical nuclei and abnormally high proportions of formulaic expressions, and Parkinsons disease, which is characterized by dysfunctional subcortical systems and impoverished formulaic language. Preliminary studies of schizophrenic speech also reveal a paucity of formulaic language. A dissociation between knowledge and use of the expressions is found in some of these populations. Observations in clinical adult subjects lead to a profile of cerebral function underlying production of novel and formulaic language, known as the dual processing model. Whereas the left hemisphere modulates newly created language, production of formulaic language is dependent on a right hemisphere/subcortical circuit. Implications of the dual process model for evaluation and treatment of language disorders are discussed.

Auditory recognition of idioms by native and nonnative speakers of English: It takes one to know one

The abilities of second language speakers to discriminate the prosodic contrasts between idiomatic and literal meanings of ambiguous sentences were investigated using utterances previously shown to be reliably identified by acoustic cues. Four listener groups of varying proficiency, native speakers of American English, native speakers of non-American English, fluent nonnative speakers of English, and advanced students of English as a second language (ESL), judged whether single and paired, tape-recorded, literal and idiomatic utterances were spoken with intended idiomatic or literal meanings. Both native speaker groups performed significantly better than fluent nonnatives, while ESL students performed at chance. These results lend support to the hypothesis that abilities to discriminate subtle prosodic contrasts are learned later than other components of speech and language.