Yukiko Shiro1,2, Shuhei Nagai1, Kazuhiro Hayashi1, Shuichi Aono3, Makoto Nishihara1, Takahiro Ushida1. 1. Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Aichi, Japan. 2. Faculty of Rehabilitation Sciences, Department of Physical Therapy, Nagoya Gakuin University, Nagoya, Aichi, Japan. 3. Department of Pain Data Management, Aichi Medical University, Nagakute, Aichi, Japan.
Abstract
PURPOSE: The purpose of the present study was to investigate the visual attentional behavior towards a pain-affected area and face/body images using eye tracking in complex regional pain syndrome (CRPS) patients. Moreover, we investigated the relationship between visual attentional behavior and clinical symptoms. PATIENTS AND METHODS: Eight female patients with CRPS type 1 in their upper limbs and 8 healthy adult women participated in this study. First, the participants were asked to watch videoclips in a relaxed manner (Videoclip 1 featured young adults who introduced themselves; Videoclip 2 featured young adults touching the hand of the other person sitting across from them with their hand.) Eye movement data were tracked with eye-tracking glasses. RESULTS: In video clip 1, the fixation duration (FD) and fixation count (FC) on faces tended to be lower in CRPS patients than in healthy controls. This tendency was found in patients with low body cognitive distortions. In video clip 2, CRPS patients displayed significantly lower FD and FC on the unaffected hand while watching a video of the unaffected hand being touched compared with healthy controls. Moreover, patients with low body cognitive distortion displayed significantly longer FD on the affected hand. CONCLUSION: Some CRPS patients differed in visual attentional behavior toward the face and body compared with healthy controls. In addition, our findings suggest that patients with lower body cognitive distortion may have a high visual attention for the affected hand, while patients with higher distortion may be neglecting the affected hand.
PURPOSE: The purpose of the present study was to investigate the visual attentional behavior towards a pain-affected area and face/body images using eye tracking in complex regional pain syndrome (CRPS) patients. Moreover, we investigated the relationship between visual attentional behavior and clinical symptoms. PATIENTS AND METHODS: Eight female patients with CRPS type 1 in their upper limbs and 8 healthy adult women participated in this study. First, the participants were asked to watch videoclips in a relaxed manner (Videoclip 1 featured young adults who introduced themselves; Videoclip 2 featured young adults touching the hand of the other person sitting across from them with their hand.) Eye movement data were tracked with eye-tracking glasses. RESULTS: In video clip 1, the fixation duration (FD) and fixation count (FC) on faces tended to be lower in CRPSpatients than in healthy controls. This tendency was found in patients with low body cognitive distortions. In video clip 2, CRPSpatients displayed significantly lower FD and FC on the unaffected hand while watching a video of the unaffected hand being touched compared with healthy controls. Moreover, patients with low body cognitive distortion displayed significantly longer FD on the affected hand. CONCLUSION: Some CRPSpatients differed in visual attentional behavior toward the face and body compared with healthy controls. In addition, our findings suggest that patients with lower body cognitive distortion may have a high visual attention for the affected hand, while patients with higher distortion may be neglecting the affected hand.
Authors: Monika Halicka; Axel D Vittersø; Hayley McCullough; Andreas Goebel; Leila Heelas; Michael J Proulx; Janet H Bultitude Journal: Cortex Date: 2020-03-13 Impact factor: 4.027