Reference frame for rapid visual processing of line orientation

What is it about?

We can easily detect a line or edge at an angle to the environment. Is this 'pop-out' effect underpinned by visual cues or the direction of gravity? This work shows that pop-out occurs whether or not visual or gravitational cues define the frame of reference. Another reference frame must be involved.

Featured Image

Why is it important?

Previous work has suggested that as well as the visual environment, gravitational cues might affect pop-out of an oriented line or edge. The present findings suggest that the frame of reference may actually be defined by the retina or axis of the body.