Population receptive field sizes in patients with a psychotic disorder and visual hallucinations

Staal, W. (Wouter) (2017) Population receptive field sizes in patients with a psychotic disorder and visual hallucinations. thesis, Medicine.

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Abstract

According to previous studies, people with schizophrenia have a range of deficits in visual perception. It is thought that these deficits might contribute to the occurrence of visual hallucinations (VH). In this study, functional Magnetic Resonance Imaging (fMRI) and population Receptive Field (pRF) mapping were used to probe the neuronal underpinnings of these VH. The pRF sizes of four patients with VH were compared with the pRFs of six patients without VH and eight healthy controls. We expected to find smaller pRF sizes in patients compared to healthy controls. Moreover, we expected to find smaller pRF sizes in patients with VH compared to patients without VH. Larger pRF sizes were found in patients compared to healthy controls. Besides, the pRF sizes of patients with VH did not differ from patients without VH. Further research, including more participants, has to be done to confirm the results of this study.

Item Type:	Thesis (Thesis)
Supervisor name:	First supervisor: and Bruggeman, Dr. R. and Psychiatrist Second supervisor: and Cornelissen, Prof. Dr. F.W. Neuroscientist and Daily supervisor: and Ommen, Ms. M.M. van MD/PhD student and University Medical Center Groningen (UMCG), department of Ne
Faculty:	Medical Sciences
Date Deposited:	25 Jun 2020 11:01
Last Modified:	25 Jun 2020 11:01
URI:	https://umcg.studenttheses.ub.rug.nl/id/eprint/2111

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