Speech and other functions after left (dominant) hemispherectomy.

Smith, Aaron

doi:10.1136/jnnp.29.5.467

Cited by 263 publications

(77 citation statements)

References 10 publications

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“…In contrast, KL's representation of verbally repeated phrases appeared more difficult to access, requiring a greater degree of verbal cueing and resulting in more frequent incomplete utterances. Overall, our findings may account for the previously reported paradoxical effect in the literature of preserved singing of familiar songs in patients with expressive aphasia, but the lack of an effect for unrehearsed sung over spoken novel stimuli in such patients (Cohen & Ford, 1995;Hébert et al, 2003;Peretz et al, 2004;Smith, 1966;Yamadori et al, 1977). In other words, melodic rehearsal appeared to be the key component for effecting longer-term improvements in speech production.…”

Section: Discussionsupporting

confidence: 65%

“…The absence of a relationship between the severity of aphasia and text production during singing led them to conclude that singing and speech are independent functions. Considerable previous research now suggests that singing is predominantly a right-hemisphere function while speech is primarily mediated by the left hemisphere (Botez & Wertheim, 1959;Epstein et al, 1999;Geschwind, Quadfasel, & Segarra, 1968;Gleason & Goodglass, 1984;Gordon & Bogen, 1974;Jackson, 1871;Perry, Zatorre, Petrides, Alivisatos, Meyer, & Evans, 1999;Riecker, Ackermann, Wildgruber, Dogil, & Grodd, 2000;Smith, 1966;Stewart, Walsh, Frith, & Rothwell, 2001;Wildgruber, Ackermann, Klose, Kardatzki, & Grodd, 1996).…”

mentioning

confidence: 99%

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Preserved Singing in Aphasia

Wilson¹,

Parsons²,

Reutens³

2006

Music Perception

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Section: Discussionsupporting

confidence: 65%

mentioning

confidence: 99%

Preserved Singing in Aphasia

Wilson¹,

Parsons²,

Reutens³

2006

Music Perception

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“…In an analysis of spontaneous speech from 15 individuals, the first study (Van Lancker Sidtis & Postman, 2006) reported a significantly greater proportion of formulaic speech in speakers with left-hemisphere damage than in healthy speakers, whereas individuals with righthemisphere damage produced significantly fewer formulaic expressions than both comparison groups. Supporting a role of the right hemisphere is a description of preserved formulaic expressions in a normally developing righthanded adult who underwent left hemispherectomy for treatment of a glioma (Smith, 1966). Other case reports of left (dominant) hemispherectomies described preserved formulaic expressions, including swearing and whole phrases such as "I don't know," "Put me to bed," and "I don't want any" (Crockett & Estridge, 1951;Gott, 1973;Hillier, 1954;Zollinger, 1935).…”

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confidence: 99%

Formulaic Language in Parkinson's Disease and Alzheimer's Disease: Complementary Effects of Subcortical and Cortical Dysfunction

Sidtis

Choi

Alken

et al. 2015

J Speech Lang Hear Res

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Purpose: The production of formulaic expressions (conversational speech formulas, pause fillers, idioms, and other fixed expressions) is excessive in the left hemisphere and deficient in the right hemisphere and in subcortical stroke. Speakers with Alzheimer's disease (AD), having functional basal ganglia, reveal abnormally high proportions of formulaic language. Persons with Parkinson's disease (PD), having dysfunctional basal ganglia, were predicted to show impoverished formulaic expressions in contrast to speakers with AD. This study compared participants with PD, participants with AD, and healthy control (HC) participants on protocols probing production and comprehension of formulaic expressions. Method: Spontaneous speech samples were recorded from 16 individuals with PD, 12 individuals with AD, and 18 HC speakers. Structured tests were then administered as probes of comprehension. Results: The PD group had lower proportions of formulaic expressions compared with the AD and HC groups. Comprehension testing yielded opposite contrasts: participants with PD showed significantly higher performance compared with participants with AD and did not differ from HC participants. Conclusions: The finding that PD produced lower proportions of formulaic expressions compared with AD and HC supports the view that subcortical nuclei modulate the production of formulaic expressions. Contrasting results on formal testing of comprehension, whereby participants with AD performed significantly worse than participants with PD and HC participants, indicate differential effects on procedural and declarative knowledge associated with these neurological conditions. C linical descriptions of formulaic language in aphasic speech have flourished for more than 150 years under a wide variety of terms. Formulaic language, in its modern conception, consists of fixed, unitary expressions known to a language community with their characteristic form, meaning, and usage conditions. Typical examples are conversational speech formulas ("You betcha," "You've got to be kidding," and "Say what?"), expletives ("heck"), idioms ("as the crow flies," "That's the way the cookie crumbles"), proverbs ("When it rains, it pours"), and other conventionalized expressions ("all things being equal," "in the meantime," and "the long and the short of it is"; Altenberg, 1998;Biber, 2009;Kuiper, 2004;Wray, 2002). These expressions share the features of fixed or canonical form; conventionalized, often nonliteral meaning; and specific relations to discourse context.As reviewed in Van Lancker (1973, 1975, 1994, formulaic language has its venerable beginnings in observations by J. Hughlings Jackson (1874aJackson ( /1932Jackson ( , 1874bJackson ( /1932, who labeled the preserved expressions seen in adults with language disability following left-brain damage automatic or nonpropositional speech. Examples cited by Hughlings Jackson include phrases belonging classically to the conception of formulaic expressions: "Take care," "That's a lie," "Good bye," "Oh dear," and "Bles...

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“…Further, there have been reports of callosal-sectioned patients with linguistic expression via RH mechanisms (Levy et ai., 1971;Gazzaniga et ai., 1982;Sid tis et ai., 1981;Butler and Norsell, 1968). More dramatically, severa11eft (dominant) hemispherectomized adults with little or no propositional speech have been observed to produce exemplars of fluent, normally intoned nonpropositiona1 speech (Crockett and Estridge, 1951;Hillier, 1954;Smith, 1966Smith, , 1974Bogen, 1973). Although alterations in spontaneous speech patterns following RH damage have not been systematically investigated, there are numerous clinical observations about deficient production of social interaction formulas and other instances of nonliterallanguage in such patients (Foldi et ai., 1983;Jaffe, 1978;Myers, 1979).…”

Section: The Possible Role Of the Right Hemisphere (Rh) In Nonliteralmentioning

confidence: 99%

The Neurology of Proverbs

Lancker

1990

Behavioural Neurology

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Although proverb tests are commonly used in the mental status examination surprisingly little is known about either normal comprehension or the interpretation of proverbial expressions. Current proverbs tests have conceptual and linguistic shortcomings, and few studies have been done to investigate the specific effects of neurological and psychiatric disorders on the interpretation of proverbs. Although frontal lobes have traditionally been impugned in patients who are “concrete”, recent studies targeting deficient comprehension of non literal language (e.g. proverbs, idioms, speech formulas, and indirect requests) point to an important role of the right hemisphere (RH). Research describing responses of psychiatrically and neurologically classified groups to tests of proverb and idiom usage is needed to clarify details of aberrant processing of nonliteral meanings. Meanwhile, the proverb test, drawing on diverse cognitive skills, is a nonspecific but sensitive probe of mental status.

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Speech and other functions after left (dominant) hemispherectomy.

Cited by 263 publications

References 10 publications

Preserved Singing in Aphasia

Preserved Singing in Aphasia

Formulaic Language in Parkinson's Disease and Alzheimer's Disease: Complementary Effects of Subcortical and Cortical Dysfunction

The Neurology of Proverbs

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