A role for the cerebellum in motor speech planning: Evidence from foreign accent syndrome

Neurogenic foreign accent syndrome: Articulatory setting, segments and prosody in a Dutch speaker

“…As to its neuroanatomical substrate, neurogenic FAS typically follows from etiologically different -mostly vascular -lesions affecting the motor speech areas of the language dominant hemisphere, including the precentral and middle frontal gyrus, the anterior insular region, the inferior parietal region and the adjacent subcortical regions. The most recent research further indicates that the cerebellum may also be crucially implicated in the development of FAS particularly in Mariën, Verhoeven, Engelborghs, Rooker, Pickut, & De Deyn (2006), Mariën & Verhoeven (2007) and Cohen, Kurowski, Steven, Blumstein, & Pascual-Leone (2009). Besides an acquired type of neurogenic FAS, a developmental variant has recently been identified by Mariën, Verhoeven, Wackenier, Engelborghs, & De Deyn (2009) who described FAS in the context of developmental apraxia of speech and specific language impairment.…”

“…At the suprasegmental level, neurogenic FAS has often been noted to have a fundamental change of speech rhythm which is described as slow (Ardila, Rosselli, & Ardila, 1988), different (Christoph, de Freitas, dos Santos, Lima, Araujo, & Carota, 2004), isosyllabic (Berthier, Ruiz, Massone, Startkstein, & Leiguarda, 1991), staccato (Berthier et al, 1991), scanning (Mariën et al, 2006) or syllable-timed (Mariën & Verhoeven, 2007). In addition to changes in speech rhythm, occasional problems with word stress placement are sometimes observed (Gurd, Bessell, Bladon, & Bamford, 1988).…”

“…This intonation description will be carried out against the background of a thorough analysis of the patient's neurolinguistic and segmental phonetic characteristics. For a discussion of the possible underlying pathophysiologic mechanisms of FAS in this patient, we would like to refer the reader to Mariën et al (2006).…”

Multidisciplinary Assessment and Diagnosis of Conversion Disorder in a Patient with Foreign Accent Syndrome

“…The condition is often preceded or accompanied by other communication disorders such as aphasia, dysarthria, and apraxia of speech [18]. More recently, FAS has been associated with a variety of neurological illnesses, including multiple sclerosis [19,20], primary progressive aphasia [21], cerebellar hypoperfusion [22], and metastatic breast cancer [23]. Several case reports of patients with FAS and psychiatric illness without a known brain lesion have also appeared, including patients with bipolar disease [24], psychosis [25,26], psychogenic illness [27], and conversion disorder [28,29].…”

Cerebellocerebral Diaschisis and Postsurgical Posterior Fossa Syndrome in Pediatric Patients

“…9 Given the fact that apraxic speech symptoms have already been described as CCD phenomena in adult patients after focal cerebellar damage, more systematic studies are needed to elucidate the exact nature and pathophysiologic substrate of speech and language phenomena following the phase of mutism in PFS. 10,11 …”