Vassallo Suzane, Douglas Jacinta
La Trobe University, Melbourne, Australia.
University of Technology, Sydney, Australia.
J Eye Mov Res. 2021 Oct 21;14(4). doi: 10.16910/jemr.14.4.6. eCollection 2021.
The visual scanpath to emotional facial expressions was recorded in BR, a 35-year-old male with chronic severe traumatic brain injury (TBI), both before and after he underwent intervention. The novel intervention paradigm combined visual scanpath training with verbal feedback and was implemented over a 3-month period using a single case design (AB) with one follow up session. At baseline BR's scanpath was restricted, characterised by gaze allocation primarily to salient facial features on the right side of the face stimulus. Following intervention his visual scanpath became more lateralised, although he continued to demonstrate an attentional bias to the right side of the face stimulus. This study is the first to demonstrate change in both the pattern and the position of the visual scanpath to emotional faces following intervention in a person with chronic severe TBI. In addition, these findings extend upon our previous work to suggest that modification of the visual scanpath through targeted facial feature training can support improved facial recognition performance in a person with severe TBI.
在一名35岁患有慢性重度创伤性脑损伤（TBI）的男性BR身上，记录了其在接受干预前后对情绪化面部表情的视觉扫描路径。这种新颖的干预范式将视觉扫描路径训练与言语反馈相结合，并采用单病例设计（AB）在3个月的时间内实施，同时进行了一次随访。在基线期，BR的扫描路径受限，其特征是主要将目光分配到面部刺激右侧的显著面部特征上。干预后，他的视觉扫描路径变得更加偏向一侧，尽管他仍表现出对面部刺激右侧的注意力偏向。本研究首次证明，对患有慢性重度TBI的人进行干预后，其对情绪化面孔的视觉扫描路径在模式和位置上均发生了变化。此外，这些发现扩展了我们之前的研究成果，表明通过有针对性的面部特征训练来改变视觉扫描路径，可以支持重度TBI患者提高面部识别能力。
