Skerswetat_et_al_2018.pdf (2.5 MB)
Download fileLevelt’s laws do not predict perception when luminance- and contrast-modulated stimuli compete during binocular rivalry
journal contribution
posted on 2023-07-26, 14:25 authored by Jan Skerswetat, Monika A. Formankiewicz, Sarah J. WaughIncompatible patterns viewed by each of the two eyes can provoke binocular rivalry, a competition of perception. Levelt’s first law predicts that a highly visible stimulus will predominate over a less visible stimulus during binocular rivalry. In a behavioural study, we made a counterintuitive observation: low visibility patterns can predominate over high visibility patterns. Our results show that none of Levelt’s binocular rivalry laws hold when luminance-modulated (LM) patterns compete with contrast-modulated (CM) patterns. We discuss visual saliency, asymmetric feedback, and a combination of both as potential mechanisms to explain the CM versus LM findings. Competing orthogonal LM stimuli do follow Levelt’s laws, whereas only the first two laws hold for competing CM stimuli. The current results provide strong psychophysical evidence for the existence of separate processing stages for LM and CM stimuli.
History
Refereed
- Yes
Volume
2018Issue number
8Page range
14432Publication title
Scientific ReportsISSN
2045-2322External DOI
Publisher
Nature ResearchFile version
- Published version
Language
- eng