当前位置: X-MOL 学术Cortex › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Dissociable pathways for moving and static face perception begin in early visual cortex: Evidence from an acquired prosopagnosic.
Cortex ( IF 3.6 ) Pub Date : 2020-07-03 , DOI: 10.1016/j.cortex.2020.03.033
Magdalena W Sliwinska 1 , Caitlin Bearpark 1 , Julia Corkhill 1 , Aimee McPhillips 1 , David Pitcher 1
Affiliation  

To investigate the functional connections between the core components of the face processing network we tested Herschel, an acquired prosopagnosic patient with a right ventral occipitotemporal lesion. In Experiment 1, Herschel, and control participants, were scanned with functional magnetic resonance imaging (fMRI) while viewing videos of moving faces, or static images taken from the videos. In Experiment 2, participants viewed videos of actors making facial expressions, or static images taken from the videos. In Experiment 3, participants viewed videos of moving faces presented in the left or right visual field. Results showed the neural response in Herschel's right occipital face area (OFA) was impaired for moving and static faces (Experiment 1), moving expressions (Experiment 2) and moving faces in the left visual field (Experiment 3). The response in Herschel's right fusiform face area (FFA) to moving and static faces was impaired in Experiment 1 only, in Experiments 2 and 3 Herschel's FFA response was not significantly different from controls. By contrast, the response in Herschel's right posterior superior temporal sulcus (rpSTS) to moving and static faces and expressions (Experiments 1 and 2) and the visual field response (Experiment 3) was not significantly different from control participants. Our results demonstrate there are cortico-cortical inputs to the pSTS from early visual cortex that are independent of the OFA, a conclusion inconsistent with established models of face processing.



中文翻译:

运动和静态面部感知的可分离途径始于早期视觉皮层:来自获得性围绝经症的证据。

为了研究面部处理网络的核心组件之间的功能连接,我们测试了Herschel,这是一名患有右腹枕颞部病变的后天体盲患者。在实验1中,在观看活动脸视频或从视频中获取的静态图像时,使用功能磁共振成像(fMRI)对Herschel和对照组参与者进行了扫描。在实验2中,参与者观看了表演面部表情的演员的视频,或从视频中拍摄的静态图像。在实验3中,参与者观看了在左侧或右侧视野中呈现的移动面孔的视频。结果显示,运动和静态面孔(实验1),运动表情(实验2)和左视野中的运动面孔(实验3)均会损害Herschel右枕面部区域(OFA)的神经反应。仅在实验1中,Herschel的右梭形脸部区域(FFA)对活动和静态脸部的响应才受到损害,在实验2和3中,Herschel的FFA响应与对照组没有显着差异。相比之下,赫歇尔右后上颞沟(rpSTS)对活动和静态面部和表情的响应(实验1和2)和视野响应(实验3)与对照组没有显着差异。我们的研究结果表明,早期视觉皮层向pSTS的皮质皮质输入与OFA无关,这一结论与已建立的面部处理模型不一致。FFA反应与对照组无显着差异。相比之下,赫歇尔右后上颞沟(rpSTS)对活动和静态面部和表情的响应(实验1和2)和视野响应(实验3)与对照组没有显着差异。我们的研究结果表明,早期视觉皮层向pSTS的皮质皮质输入与OFA无关,这一结论与已建立的面部处理模型不一致。FFA反应与对照组无显着差异。相比之下,赫歇尔右后上颞沟(rpSTS)对活动和静态面部和表情的响应(实验1和2)和视野响应(实验3)与对照组没有显着差异。我们的研究结果表明,早期视觉皮层向pSTS的皮质皮质输入独立于OFA,这一结论与已建立的面部处理模型不一致。

更新日期:2020-07-28
down
wechat
bug