Deficits in emotion-based learning are implicated in many psychiatric disorders. Research conducted with patients with schizophrenia using one of the most popular tasks for the investigation of emotion-based learning, the Iowa Gambling Task (IGT), has largely been inconclusive. The present study employed a novel, contingency-shifting variant IGT with hallucination- and delusion-prone university...

We report evidence that auditory verbal hallucinations (AVH) in schizophrenia patients are perceptual distortions lateralized to the left hemisphere. We used a dichotic listening task with repeated presentations of consonant-vowel syllables, a different syllable in the right and left ear. This task produces more correct reports for the right ear syllable in healthy individuals, indicative of le...

An updated summary of the most used instruments assessing auditory hallucinations in population with psychosis, allows us to underline scarceness and need Spanish versions important instruments. The aim study is examine psychometric characteristics two different complementary for hallucinations, version Auditory Vocal Hallucination Scale (AVHRS) Positive Useful Voices Inquiry (PUVI). A sample 6...

Objective: Isolated visual hallucinations is considered as the Charles Bonnet syndrome. Ophtalmic or brain organic disease is a necessary or exclusionary criterion for diagnosis. In previous reports, it reported only solitary hallucination. In this report, we found multiple hallucinations. Case Presentation: In this article we report a 64 year-old blind man with renal failure under hemodialy...

IntroductionMigraine with aura is less frequent than the subtype form without aura. Normally, auras are typically manifested visual symptoms, but it possible to have an auditory and olfactory complains as symptomatology.Case reportAn 8-year-old boy family cases of migraine, complained hallucination episodes, since he was 5 years-old, a duration 10 20 minutes, followed by cure intense photophobi...

Olfactory hallucinations (smelling odors that are not present) are intrusive and disruptive yet challenging to investigate because they cannot be produced on demand. In this study, the authors attempted to model olfactory hallucinations using hypnotic suggestions. We gave some subjects a suggestion to smell an odor in the absence of a real odor (positive hallucination) and gave others a suggest...

schizophrenia and various neurological disorders have some signs and symptoms. visual hallucinations are one of such disorders. the related studies in some diseases for example parkinson disease and lewy body dementia indicate that acetylcholine (ach) plays a significant role in neuropsychiatric manifestation and its association with visual hallucination; therefore, visual hallucinations occur ...