Recently, it has been proposed that exaggerated top-down processing may generate spontaneous perceptual output, and that this may constitute a cognitive predisposition toward hallucinations. In this experiment, we investigated whether hallucination proneness would be associated with increased auditory-verbal perceptual expectations, and at which processing level this occurs. From 351 undergradu...

aim and background: cognitivists have recently paid extensive attention to source monitoring deficit as an impairment in schizophrenic patients and is used in clarification of major symptoms including hallucination and delusion. therefore, the present study aimed to explore the effects of source monitoring ability in auditory hallucination. methods and materials: this causal-comparative study u...

BACKGROUND The pathophysiology of auditory verbal hallucinations remains poorly understood. AIMS To characterise the time course of regional brain activity leading to auditory verbal hallucinations. METHOD During functional magnetic resonance imaging, 11 patients with schizophrenia or schizoaffective disorder signalled auditory verbal hallucination events by pressing a button. To contro...

Pure word deafness is a disorder of auditory verbal comprehension without dysfunction of speaking, reading, or writing. This rare symptom arises from bilateral lesions in the temporal lobes or disconnection between the primary auditory cortex and Wernicke’s area. I present a right-handed 33-year-old woman who presented with pure word deafness and complex auditory hallucination with intermittent...

Abstract Background While advances in the field of functional magnetic resonance imaging (fMRI) provide new opportunities to study brain networks underlying experience hallucinations psychosis, there are methodological challenges unique symptom-capture studies. Study Design We extracted activated during hallucination-capture for schizophrenia patients when fMRI data collected from two sites was...

BACKGROUND Auditory verbal hallucinations (AVHs) represent one of the most intriguing phenomena in schizophrenia, however, brain abnormalities underlying AVHs remain unclear. The present study examined the association between cortical thickness and AVHs in first-episode schizophrenia. METHOD High-resolution MR images were obtained in 49 first-episode schizophrenia (FES) patients and 50 well-m...

OBJECTIVES This study adapted the Launay Slade Hallucination Scale (LSHS) to measure predisposition to auditory and visual hallucinations and examine the relationship between meta-cognition and predisposition in a non-psychiatric population. It also tested the hypothesis that individuals highly predisposed to hallucination would show positive and negative meta-cognitive beliefs and report the u...

We used functional magnetic resonance imaging to examine how brain activity associated with auditory verbal hallucinations in schizophrenia changed during hallucinatory events. Activation in the left inferior frontal and right middle temporal gyri was evident 6-9 s before the person signalled the onset of the hallucination, whereas activation in the bilateral temporal gyri and the left insula c...

Inner speaking, the covert talking that goes on inside a person's mind, can shape creative thought. How phenomenological properties and quality of inner speaking correlate with potential, however, is an open scientific problem. To explore this, participants ( n = 267) filled in revised Varieties Speech Questionnaire Launay Slade Hallucination Scale (auditory subscale), performed three tests pot...

Phase locking in the gamma-band range has been shown to be diminished in patients with schizophrenia. Moreover, there have been reports of positive correlations between phase locking in the gamma-band range and positive symptoms, especially hallucinations. The aim of the present study was to use a new methodological approach in order to investigate gamma-band phase synchronization between the l...