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Brain activation during auditory hallucinations in the schizophrenia-patient.

Brouwer, L. (2010) Brain activation during auditory hallucinations in the schizophrenia-patient. Bachelor's Thesis, Biology.

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Abstract

Introduction: Auditory hallucinations are the most common positive symptoms in schizophrenia. The main goal of this review is exploring the activity of the brain during this phenomenon. Material and method: Searching Pubmed for activation studies with auditory hallucinations and schizophrenia yield 53 potential articles. After selecting 10 interesting remained. Using MRIcro the spots of maximal activation are marked. Results: All most all articles reported bilateral activation of the STG and MTG in the temporal lobe. Also activation of the inferior frontal lobe was found in both hemispheres, including Broca’s area and his right homologue. Moreover activation of the cingulate gyrus and the parahippocampal gyrus was found, bilaterally. Preceding the occurrence of hallucination Diederen et al. showed an prominent decrease of activation in the left parahippocampal gyrus. Dissussion: these finding suggest activation of a cortical network of language areas involved in auditory hallucinations. There are multiple explanations for the function of this network in hallucinations. One is that auditory hallucinations are internally generated thoughts that are misrecognized as coming from an external source. Because there is a defect in the monitoring of self-generated inner speech. The other explanation is that auditory hallucinations are spontaneously retrieved verbal memories.

Item Type: Thesis (Bachelor's Thesis)
Degree programme: Biology
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 15 Feb 2018 07:31
Last Modified: 15 Feb 2018 07:31
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/9250

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