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Visual search in Alzheimer's disease and amnesticmild cognitive impairment: An eye-tracking study       
Yazarlar (6)
Hatice Eraslan Boz
İzmir Demokrasi Üniversitesi, Türkiye
Koray Koçoğlu
Türkiye
Dr. Öğr. Üyesi Müge AKKOYUN Dr. Öğr. Üyesi Müge AKKOYUN
Işıl Yağmur Tüfekci
Merve Ekin
Gülden Akdal Halmagyı
Dokuz Eylül Üniversitesi, Türkiye
Devamını Göster
Özet
Visual search impairment is a potential cognitive marker for Alzheimer's disease (AD) and amnestic mild cognitive impairment (aMCI). The aim of this study is to compare eye movements during visual tracking in AD and aMCI patients versus healthy controls (HCs). A prospective cohort study included 32 AD and 37 aMCI patients, and 33 HCs. Each participant was asked to look at the target object in a visual stimulus containing one target and eight distractors, and eye movements were recorded with EyeLink 1000 Plus. AD patients had fewer fixations and shorter target fixation duration than aMCI patients and HCs. Fixation durations were also shorter in aMCI patients compared to HCs. Also, AD patients were more fixated on distractors than HCs. Our findings revealed that visual search is impaired in the early stages of AD and even aMCI, highlighting the importance of addressing visual processes in the Alzheimer's continuum. AD patients looked to distractors more and longer than the target compared to aMCI patients and older healthy individuals. aMCI patients had an impaired visual search pattern compared to healthy controls, just like patients with AD. The visual search task differentiated AD and aMCI patients from healthy individuals without dementia.
Anahtar Kelimeler
Alzheimer's disease | amnestic mild cognitive impairment | finding objects | visual attention | visual | search
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı ALZHEIMERS & DEMENTIA
Dergi ISSN 1552-5260 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 02-2024
Cilt No 20
Sayı 2
Sayfalar 10 / 768
Doi Numarası 10.1002/alz.13478