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Related Experiment Video

Updated: Mar 20, 2026

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody

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Functional foreign accent syndrome.

Omay Lee1, Lea Ludwig2, Richard Davenport1

  • 1Department of Clinical Neurosciences, University of Edinburgh, Western General Hospital, Edinburgh, UK.

Practical Neurology
|May 29, 2016
PubMed
Summary
This summary is machine-generated.

Foreign accent syndrome (FAS) is a rare speech disorder. This study highlights a case of functional FAS, distinguishing it from structural causes by identifying transient and reversible speech characteristics.

Keywords:
Conversion DIsorderForeign Accent SyndromeFunctional Neurological DisorderPsychogenic

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Area of Science:

  • Neurology
  • Linguistics
  • Psychiatry

Background:

  • Foreign accent syndrome (FAS) is a rare neurological condition characterized by changes in speech articulation, leading listeners to perceive an unfamiliar accent.
  • While typically associated with left hemisphere lesions, the possibility of functional causes for FAS is increasingly recognized.

Purpose of the Study:

  • To describe a unique case of functional Foreign accent syndrome.
  • To identify key characteristics that differentiate functional FAS from structural (lesion-based) FAS.
  • To underscore the complex etiology of FAS, encompassing both neurological and functional components.

Main Methods:

  • Case study methodology.
  • Clinical assessment of speech patterns and neurological examination.
  • Video documentation of the patient's speech for detailed analysis.

Main Results:

  • The described case presented with functional FAS, lacking evidence of structural brain lesions.
  • Distinguishing features identified include preceding motor disturbances, accent inconsistencies, unusual speech mannerisms, and transient, reversible symptoms.
  • These characteristics suggest a non-organic basis for the observed speech alterations.

Conclusions:

  • Foreign accent syndrome can arise from functional causes, not solely from structural brain damage.
  • Recognizing functional FAS is crucial for accurate diagnosis and appropriate management.
  • FAS represents a complex interplay of neurological and psychological factors.