Biomedical Research

Research Article - Biomedical Research (2017) Volume 28, Issue 22

Impairment of attention choice in left spatial neglect patients: A behavioral study

The aim of this study was to explore the changes in object-based and space-based attention choice in left spatial neglect. Eleven subjects with left spatial neglect were designated as viewer-centered neglect (viewer-centered group, n=5) or combined viewer-centered with object-centered neglect (combined group, n=6). All recruited subjects completed a modified cue-target paradigm, and their Response Times (RTs) to valid and invalid cues were recorded and analysed. The mean RT for targets located in the left space was longer than the mean RT for targets in the right space, especially in the combined group. Furthermore, with an invalid cue prompt, the RT was longer when attention was shifted between objects than when shifted within objects in any group, regardless of targets in left or right spaces. However, when attention shifted towards the left, the RT increased. Subjects with left spatial neglect manifest impairment of space-based attention choice and a disengagement disorder of the right space (or engagement disorder of the left space).

Author(s): Yuehong Yue, Yongbo Zhao, Hongwei Zhao, Xing Xing, Nan Yin

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