Normative data for an expanded set of stimuli for testing high-level influences on object perception: OMEFA-II

Colin S. Flowers, Kimberley D. Orsten-Hooge, Barnes G.L. Jannuzi, Mary A. Peterson

Research output: Contribution to journalArticlepeer-review


We present normative data for bipartite displays used to investigate high-level contributions to object perception in general and to figure-ground perception in particular. In these vertically-elongated displays, two equal-area regions of different luminance abut a central, articulated, vertical border. In Intact displays, a portion of a mono-oriented well-known (“familiar”) object is sketched along one side of the border; henceforth the “critical side.” The other side is the “complementary side.” We measured inter-subject agreement among 32 participants regarding objects depicted on the critical and complementary sides of the borders of Intact displays and two other types of displays: upright and inverted Part-Rearranged displays. The parts on the critical side of the border are the same in upright Intact and Part-Rearranged displays but spatially rearranged into a new configuration in the latter. Inter-subject agreement is taken to index the extent to which a side activates traces of previously seen objects near the central border. We report normative data for 288 regions near the central borders of 144 displays (48/type) and a thorough description of the image features. This set of stimuli is larger than an older “Object Memory Effects on Figure Assignment” (OMEFA) set. This new OMEFA-II set of high-resolution displays is available online (

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Oct 16 2019

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Immunology and Microbiology(all)
  • Neuroscience(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

Fingerprint Dive into the research topics of 'Normative data for an expanded set of stimuli for testing high-level influences on object perception: OMEFA-II'. Together they form a unique fingerprint.

Cite this