![]() ![]() ![]() It is hypothesized that a relatively enduring left hemisphere abnormality may leave some patients at risk for auditory hallucinations. CONCLUSIONS: The results suggest that auditory hallucinations are associated with abnormalities in left hemisphere functioning and that these abnormalities might not be limited to the time of the auditory hallucinations. A subgroup of patients was tested in both hallucinating and nonhallucinating states, but the ear asymmetry was not noticeably different between these states. Neither group was able to modify its performance when instructed to attend to either the left or the right ear. In contrast, the hallucinating patients showed no ear advantage. ![]() RESULTS: The nonhallucinating patients showed the normal right ear advantage, which indicates a left hemisphere superiority in the processing of linguistic stimuli. The test was administered under three conditions: a nonforced attention condition, a condition in which attention was forced to the left ear, and one in which attention was forced to the right ear. Brain activation measured with fMRI during a mental arithmetic task in schizophrenia and major depression. polymorphisms in FOXP2 have recently been associated with auditory hallucinations in schizophrenia (Sanjuan et al., 2006). The general setup of a standard dichotic listening test is such that. The dichotic listening (DL) paradigm (Bryden. Here we report a 64-channel EEG study using lagged phase synchronization analysis and eLORETA source estimation to examine the functional connectivity between bilateral auditory cortices in the gamma-band in 26 schizophrenia patients (13 with and 13 without AVH) and 26 matched healthy controls (HC) while performing a dichotic listening task. This test is mostly used in the field of neuroscience and cognitive psychology. METHOD: In this study a consonant-vowel version of the Dichotic Listening Test was used to assess the functional integration of the left hemisphere in hallucinating and nonhallucinating psychotic patients. Request PDF Controlled shifting of attention in schizophrenia and bipolar disorder through a dichotic listening paradigm The dichotic listening (DL). Studies using dichotic listening tasks have reported findings suggestive of alterations of cerebral laterality in schizophrenia and affective disorders. The type of psychological test which is commonly used to investigate the lateralization of brain and selective attenuation within the auditory system of the brain is known as Dichotic listening. It has been hypothesized that hearing imaginary voices involves the same physiological processes as those involved in hearing real voices, but this hypothesis has not been conclusively confirmed. OBJECTIVE: Auditory hallucinations are a serious problem for a large subgroup of psychotic patients who do not respond optimally to neuroleptic medication. ![]()
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