Vigorous Orientation Signal Propagates Best from Collinear Motion

• DOI: 10.1068/i0655rep
• Publication Date: 2014-08-12T14:28:35Z
• Authors: Massimo Girelli
• Keywords: Bar (unit); SIGNAL (programming language); Clockwise

In the present study, Poggendorff illusion was tested with four types of stimuli: A moving dot, a bar parallel to inducing lines, collinear motion trajectory, and static bars as in classic illusion. Psychometric functions alignment task showed that bar, where orientation trajectory matched, yielded best performance almost eliminating illusion; vertical on contrary, worst alignment, finally dot led intermediate alignments. These results demonstrate interaction between likely takes place primary visual cortex (V1) these two signals might be modulated by top-down activity from higher order areas such middle temporal (MT). This vigorous orientation-motion allows extremely accurate positional predictions objects scene, particular during occlusion.