Figure 1
From: The sensory feedback mechanisms enabling couples to walk synchronously: An initial investigation

Example of two couples walking in synchrony. (A) Two older adults walking in the street and (B) the Wright brothers at the Belmont International Airmeet. The walking partners do not appear to be looking at each other and there is no apparent contact, yet the partners apparently walk as one. In the present study, we investigate the factors that enable synchronized walking such as that seen in these two examples.