Bidet-Caulet Aurélie, Voisin Julien, Bertrand Olivier, Fonlupt Pierre
INSERM U280, IFNL, UCB-Lyon1, Centre Hospitalier Le Vinatier, Bron, France.
Neuroimage. 2005 Oct 15;28(1):132-9. doi: 10.1016/j.neuroimage.2005.06.018. Epub 2005 Jul 18.
A vivid perception of a moving human can be evoked when viewing a few point-lights on the joints of an invisible walker. This special visual ability for biological motion perception has been found to involve the posterior superior temporal sulcus (STSp). However, in everyday life, human motion can also be recognized using acoustic cues. In the present study, we investigated the neural substrate of human motion perception when listening to footsteps, by means of a sparse sampling functional MRI design. We first showed an auditory attentional network that shares frontal and parietal areas previously found in visual attention paradigms. Second, an activation was observed in the auditory cortex (Heschl's gyrus and planum temporale), likely to be related to low-level sound processing. Most strikingly, another activation was evidenced in a STSp region overlapping the temporal biological motion area previously reported using visual input. We thus propose that a part of the STSp region might be a supramodal area involved in human motion recognition, irrespective of the sensory modality input.
当观看一个隐形步行者关节上的几个点光源时,能唤起对移动人体的生动感知。已发现这种用于生物运动感知的特殊视觉能力涉及颞上沟后部(STSp)。然而,在日常生活中,人体运动也可以通过听觉线索来识别。在本研究中,我们通过稀疏采样功能磁共振成像设计,研究了听脚步声时人体运动感知的神经基础。我们首先展示了一个听觉注意网络,该网络共享先前在视觉注意范式中发现的额叶和顶叶区域。其次,在听觉皮层(颞横回和颞平面)观察到激活,这可能与低水平的声音处理有关。最引人注目的是,在一个与先前使用视觉输入报告的颞部生物运动区域重叠的STSp区域也有激活迹象。因此,我们提出STSp区域的一部分可能是一个超模态区域,参与人体运动识别,而与感觉模态输入无关。