Cluttering

Weiss, D.A.

doi:10.1159/000263150

Cited by 19 publications

(20 citation statements)

References 28 publications

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“…Also, even though both conditions compared to baseline showed increased activation in adults who clutter of right hemisphere homologues of posterior "language" regions (superior temporal sulcus and angular gyrus), these regions were not differentially activated for picture description relative to sentence reading. The immediate implications of the findings observed in these two conditions in these posterior language regions are not immediately clear, but the findings are of note because some researchers have suggested a relationship between cluttering and high level language comprehension difficulties (Daly, 1986;Ward, 2006;Weiss, 1964).…”

Section: Implications For a Working Model Of The Neural Underpinningsmentioning

confidence: 88%

“…For example, the hesitations and normal non-fluencies cited in the LCD could be language based, motor based, or reflect a more generalised problem with organisation, or planning as Weiss (1964) first speculated. Ward (2011a) argued that cluttering symptoms are seen at all levels of Van der Merwe's (2008) four-level model of speech processing.…”

Section: Recent Considerations On the Aetiology Of Clutteringmentioning

confidence: 99%

“…There is also a history of dispute as to the scope of the core behaviours of the disorder, with speculation as to whether cluttering is a motor speech disorder, a language disorder, both, or perhaps more to do with executive functioning than either (Daly, 1986;Preus, 1996;St. Louis, Myers, Bakker, & Raphael, 2007;Van Zaalen, Wijnen, & De Jonckere, 2009a;Ward, 2010;Weiss, 1964). These differences have led researchers to apply different criteria when defining their experimental groups.…”

Section: A Unified Perspective Of Clutteringmentioning

confidence: 99%

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The neurological underpinnings of cluttering: Some initial findings

Ward

Connally

Pliatsikas

et al. 2015

Journal of Fluency Disorders

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a b s t r a c tBackground: Cluttering is a fluency disorder characterised by overly rapid or jerky speech patterns that compromise intelligibility. The neural correlates of cluttering are unknown but theoretical accounts implicate the basal ganglia and medial prefrontal cortex. Dysfunction in these brain areas would be consistent with difficulties in selection and control of speech motor programs that are characteristic of speech disfluencies in cluttering. There is a surprising lack of investigation into this disorder using modern imaging techniques. Here, we used functional MRI to investigate the neural correlates of cluttering. Method: We scanned 17 adults who clutter and 17 normally fluent control speakers matched for age and sex. Brain activity was recorded using sparse-sampling functional MRI while participants viewed scenes and either (i) produced overt speech describing the scene or (ii) read out loud a sentence provided that described the scene. Speech was recorded and analysed off line. Differences in brain activity for each condition compared to a silent resting baseline and between conditions were analysed for each group separately (cluster-forming threshold Z > 3.1, extent p < 0.05, corrected) and then these differences were further compared between the two groups (voxel threshold p < 0.01, extent > 30 voxels, uncorrected). Results: In both conditions, the patterns of activation in adults who clutter and control speakers were strikingly similar, particularly at the cortical level. Direct group comparisons revealed greater activity in adults who clutter compared to control speakers in the lateral premotor cortex bilaterally and, as predicted, on the medial surface (pre-supplementary motor area). Subcortically, adults who clutter showed greater activity than control speakers in the basal ganglia. Specifically, the caudate nucleus and putamen were overactive in adults who clutter for the comparison of picture description with sentence reading. In addition, adults who clutter had reduced activity relative to control speakers in the lateral anterior cerebellum bilaterally.Eleven of the 17 adults who clutter also stuttered. This comorbid diagnosis of stuttering was found to contribute to the abnormal overactivity seen in the group of adults who clutter in the right ventral premotor cortex and right anterior cingulate cortex. In the remaining areas of abnormal activity seen in adults who clutter compared to controls, the subgroup who clutter and stutter did not differ from the subgroup who clutter but do not stutter. Conclusions: Our findings were in good agreement with theoretical predictions regarding the neural correlates of cluttering. We found evidence for abnormal function in the basal ganglia and their cortical output target, the medial prefrontal cortex. The findings are discussed in relation to models of cluttering that point to problems with motor control of speech.Educational objectives: This paper reports findings on the neural correlates seen in adults who clutter, and offers hypotheses as to ...

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Section: Implications For a Working Model Of The Neural Underpinningsmentioning

confidence: 88%

Section: Recent Considerations On the Aetiology Of Clutteringmentioning

confidence: 99%

Section: A Unified Perspective Of Clutteringmentioning

confidence: 99%

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The neurological underpinnings of cluttering: Some initial findings

Ward

Connally

Pliatsikas

et al. 2015

Journal of Fluency Disorders

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“…His motor problems maybe indicative of left-hemisphere impairment, the side that appears to be affected in signing aphasia among deaf people (Chiarello, Knight, & Mandel, 1982;Kimura, 1981). However, clumsiness and stuttering are also typical of many reading-disordered children (Weiss, 1964).…”

Section: Literacy Intervention For a Deaf Child Pjfhmentioning

confidence: 99%

Literacy Intervention for a Deaf Child with Severe Reading Disorder

Tetzchner

Rogne

Lilleeng

1997

Journal of Literacy Research

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“…In his book. Cluttering [55] he has described the multiplicity of symptoms, familial tendancy, etc. and quotes the theories of various experts as to the explanation of such " non-neurologic" conditions.…”

Section: Froeschels Modern Theories On Stuttering 143mentioning

confidence: 99%

Modern Theories on Stuttering

Froeschels¹

1967

Folia Phoniatr Logop

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Cluttering

Cited by 19 publications

References 28 publications

The neurological underpinnings of cluttering: Some initial findings

The neurological underpinnings of cluttering: Some initial findings

Literacy Intervention for a Deaf Child with Severe Reading Disorder

Modern Theories on Stuttering

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