School of Psychology and Centre for Brain Research, University of Auckland, New Zealand.
School of Psychology and Centre for Brain Research, University of Auckland, New Zealand.
Neuropsychologia. 2022 Apr 15;168:108185. doi: 10.1016/j.neuropsychologia.2022.108185. Epub 2022 Feb 18.
Visual orienting was studied in a patient (FM) with parietal-occipital damage due to oligodendroglioma and associated surgery, and in eighteen control participants. The ability of FM and control participants to shift attention in response to spatial landmark cues, and in response to cues that recruit endogenous orienting via encoding of cue identity, were assessed. According to the unified model of vision and attention (Lambert, A. et al., Journal of Experimental Psychology: Human Perception & Performance, 44, 412-432) FM should find it difficult to orient attention in response to spatial landmarks due to impaired functioning of the dorsal visual stream; but shifting attention in response to cue identity, encoded via the ventral visual stream, should be spared. Consistent with these predictions, FM was unable to shift attention in the landmark cueing task, but shifted attention effectively in response to identity cues; and her visual orienting performance differed reliably from controls. These findings complement our earlier observation of preserved orienting towards landmark cues in a patient with bilateral damage to the ventral visual stream, and add to a growing body of evidence in support of the unified model of vision and attention.
视觉定向在一位因少突胶质细胞瘤及相关手术导致顶枕叶损伤的患者（FM）和 18 名对照参与者中进行了研究。评估了 FM 和对照参与者响应空间地标线索以及通过线索身份编码来调动内源性定向的线索响应来转移注意力的能力。根据视觉和注意力的统一模型（Lambert，A.等人，《实验心理学杂志：人类感知与表现》，44，412-432），FM 由于背侧视觉流功能受损，可能难以响应空间地标来定向注意力；但通过腹侧视觉流编码的线索身份的注意力转移应该不会受到影响。与这些预测一致，FM 无法在地标线索任务中转移注意力，但有效响应身份线索转移注意力；她的视觉定向表现与对照组有可靠差异。这些发现补充了我们之前在双侧腹侧视觉流损伤的患者中观察到的对地标线索的定向保留，并且为支持视觉和注意力的统一模型提供了越来越多的证据。
