Year: 2007
Type: dissertation
Study design: Observational Study
Abstract: The purpose of this study was to investigate two possible mechanisms for impaired visual search performance among patients with SCZ: a narrower visual span and impaired selectivity. Consistent with previous findings, the patients in this study were more adversely affected as the number of search items increased. Importantly, patients' visual search impairment was only evident when they searched for more eccentric targets, suggesting that patients with SCZ do indeed have a narrower visual span and that visual span reduction is associated with impaired visual search. In addition, patients dynamically modulated their search such that they directed their attention to the distractor type that had the smaller number of items. Overall, these data suggest that a narrower visual span is an important mechanism of impaired visual search performance among patients with SCZ. In contrast, evidence for impaired selectivity was not found in this study.
Source: TSpace (University of Toronto)
Author: Elahipanah, Ava
Language: English
Subfield: Psychiatry and Mental health
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W7132929374