Auditory hallucinations and reduced language lateralization in schizophrenia: a meta-analysis of dichotic listening studies.
J Int Neuropsychol Soc
; 19(4): 410-8, 2013 Apr.
Article
en En
| MEDLINE
| ID: mdl-23332000
ABSTRACT
Reduced left-hemispheric language lateralization has been proposed to be a trait marker for schizophrenia, but the empirical evidence is ambiguous. Recent studies suggest that auditory hallucinations are critical for whether a patient shows reduced language lateralization. Therefore, the aim of the study was to statistically integrate studies investigating language lateralization in schizophrenia patients using dichotic listening. To this end, two meta-analyses were conducted, one comparing schizophrenia patients with healthy controls (n = 1407), the other comparing schizophrenia patients experiencing auditory hallucinations with non-hallucinating controls (n = 407). Schizophrenia patients showed weaker language lateralization than healthy controls but the effect size was small (g = -0.26). When patients with auditory hallucinations were compared to non-hallucinating controls, the effect size was substantially larger (g = -0.45). These effect sizes suggest that reduced language lateralization is a weak trait marker for schizophrenia as such and a strong trait marker for the experience of auditory hallucinations within the schizophrenia population.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Esquizofrenia
/
Psicología del Esquizofrénico
/
Pruebas de Audición Dicótica
/
Alucinaciones
/
Lateralidad Funcional
Tipo de estudio:
Observational_studies
/
Systematic_reviews
Límite:
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Int Neuropsychol Soc
Asunto de la revista:
NEUROLOGIA
/
PSICOLOGIA
Año:
2013
Tipo del documento:
Article
País de afiliación:
Noruega