Our model (1) predicts that peripheral cues can improve performance on high-acuity visual tasks if the brain implements a mechanism for stabilization of fixational drift that is solely based on retinal inputs. For such improvement to be observed experimentally, several requirements should be met. The stimulus must be presented in the central fovea so the task can focus on features near our acuity limit, at ∼1 arcmin resolution, for which fixational drift is consequential. Exposure time should be large enough for a stabilization mechanism to be beneficial (∼100 ms or more). The stimulus must be sufficiently small that its own features cannot provide sufficient information about the eye trajectory. In particular, care must be taken to remove inadvertent peripheral cues within the visual scene, like the edge of a screen or objects in the room.
Reply to Wehrhahn: Experimental requirements for testing the role of peripheral cues in dynamic image stabilization
Authors: Yoram Burak, Uri Rokni, Markus Meister, and Haim Sompolinsky
Year of publication: 2011
Journal: PNAS 108 (10) E36
Link to publication: