Trouble du contrôle de la parole intérieure : cas des hallucinations auditives verbales (Inner speech monitoring deficit : a study of auditory verbal hallucinations) [in French]
1841Authors
nan
Abstract
_________________________________________________________ Inner speech monitoring deficit : a study of auditory verbal hallucinations Auditory verbal hallucinations (AVHs) are speech perceptions in the absence of relevant external stimuli. Some accounts of AVHs claim that a deficit in inner speech monitoring causes the own verbal thoughts of the patient to be perceived as external voices. These theories have been developed using a classical speech motor control model, in which self-monitoring can be implemented. In order to examine the inner speech monitoring deficit account, the present study aimed at collecting speech muscle activity during AVHs, overt speech and rest. Surface electromyography (sEMG) was used on eleven schizophrenia patients. Our results show an increase in muscular activity in the orbicularis oris inferior muscle during non-subvocalized AVHs, as compared with rest. This evidence that AVHs are self-generated inner speech is discussed in the framework of a speech motor control model. MOTS-CLES: orbiculaires de la bouche, contrôle moteur de la parole, hallucinations auditives verbales, parole intérieure, agentivité, sEMG, schizophrénie KEYWORDS: Orbicularis oris, speech motor control, auditory verbal hallucinations, inner speech, agentivity, sEMG, schizophrenia 233 1.
Keywords
Full Content
Actes de la conférence conjointe JEP-TALN-RECITAL 2012, volume 1: JEP, pages 233–240, Grenoble, 4 au 8 juin 2012. c ⃝2012 ATALA & AFCP Trouble du contrôle de la parole intérieure : cas des hallucinations auditives verbales Lucile Rapin¹, Marion Dohen2, Hélène Lœvenbruck2, Mircea Polosan3, Pascal Perrier2 (1) DEP, Université du Québec à Montréal (2) DPC, GIPSA-lab, UMR 5216, CNRS, Université de Grenoble (3) Pôle de Psychiatrie et de Neurologie du CHU de Grenoble lucilerapin@gmail.com, marion.dohen@gipsa-lab.grenoble-inp.fr, helene.loevenbruck@gipsa-lab.grenoble-inp.fr, mpolosan@chu-grenoble.fr, pascal.perrier@gipsa-lab.grenoble-inp.fr RESUME____________________________________________________ Les hallucinations auditives verbales (HAVs) sont des perceptions de parole en l’absence de stimulus externe. Certaines théories proposent qu’un dysfonctionnement dans le contrôle de la parole intérieure entraîne l’attribution des propres pensées verbales du patient à un agent externe. Ces théories peuvent être interprétées dans le cadre d’un modèle du contrôle moteur de la parole mettant en jeu une simulation interne du processus de production de parole. Pour examiner cet éventuel dysfonctionnement, l’étude présentée a pour but de mesurer l’activité musculaire des muscles oro-faciaux, lors des HAVs, de la lecture à voix haute et du repos. L’électromyographie de surface a été utilisée sur 11 patients schizophrènes. Les résultats montrent une augmentation de l’activité musculaire de l’orbiculaire inférieur de la bouche lors des HAVs (sans subvocalisation) par rapport au repos. Ce résultat, qui suggère que les HAVs sont de la parole intérieure auto-générée, est discuté dans le cadre du modèle de contrôle moteur. ABSTRACT_________________________________________________________ Inner speech monitoring deficit : a study of auditory verbal hallucinations Auditory verbal hallucinations (AVHs) are speech perceptions in the absence of relevant external stimuli. Some accounts of AVHs claim that a deficit in inner speech monitoring causes the own verbal thoughts of the patient to be perceived as external voices. These theories have been developed using a classical speech motor control model, in which self-monitoring can be implemented. In order to examine the inner speech monitoring deficit account, the present study aimed at collecting speech muscle activity during AVHs, overt speech and rest. Surface electromyography (sEMG) was used on eleven schizophrenia patients. Our results show an increase in muscular activity in the orbicularis oris inferior muscle during non-subvocalized AVHs, as compared with rest. This evidence that AVHs are self-generated inner speech is discussed in the framework of a speech motor control model. MOTS-CLES: orbiculaires de la bouche, contrôle moteur de la parole, hallucinations auditives verbales, parole intérieure, agentivité, sEMG, schizophrénie KEYWORDS: Orbicularis oris, speech motor control, auditory verbal hallucinations, inner speech, agentivity, sEMG, schizophrenia 233 1. Introduction Les hallucinations auditives verbales (HAVs) sont un des symptômes les plus invalidants de la schizophrénie, touchant entre 50% et 80% des patients. Elles ont été définies comme «a sensory experience which occurs in the absence of corresponding external stimulation of the relevant sensory organ, has a sufficient sense of reality to resemble a veridical perception over which the subject does not feel s/he has direct and voluntary control, and which occurs in the awake state»1 (David, 2004). Certaines théories expliquent les HAVs comme résultant d’une perturbation dans la production de …
Content truncated to 500 words
Labeled Text
_________________________________________________________ Inner speech monitoring deficit : a study of auditory verbal hallucinations Auditory verbal hallucinations (AVHs) are speech perceptions in the absence of relevant external stimuli. Some accounts of AVHs claim that a deficit in inner speech monitoring causes the own verbal thoughts of the patient to be perceived as external voices. These theories have been developed using a classical speech motor control model, in which self-monitoring can be implemented. In order to examine the inner speech monitoring deficit account, the present study aimed at collecting speech muscle activity during AVHs, overt speech and rest. Surface electromyography (sEMG) was used on eleven schizophrenia patients. Our results show an increase in muscular activity in the orbicularis oris inferior muscle during non-subvocalized AVHs, as compared with rest. This evidence that AVHs are self-generated inner speech is discussed in the framework of a speech motor control model. MOTS-CLES: orbiculaires de la bouche, contrôle moteur de la parole, hallucinations auditives verbales, parole intérieure, agentivité, sEMG, schizophrénie KEYWORDS: Orbicularis oris, speech motor control, auditory verbal hallucinations, inner speech, agentivity, sEMG, schizophrenia 233 1.
Publication Details
- Paper ID:
- 1841
- Year:
- 2012
- Publication:
- TIPSTER
- Publication Type:
- conf
- DOI:
- nan