Low-level Visual Attributes Affect the Integration of Visual Context during Size Processing
(2023) 23nd conference of the European Society for Cognitive Psychology — Location: Porto, Portugal (6.September.2023)
Files
Presentation.pdf
Open Access - Adobe PDF
- 1.05 MB
Details
- Authors
- Abstract
- The ventral and dorsal cerebral streams process the metrics of visual objects (e.g., their size) in a relative and absolute manner, respectively. They receive partially distinct inputs from magno(M)- and parvocellular(P) neurons with different spatial, temporal, and spectral properties. Low-level visual attributes biasing the processing of objects towards the M-dominant dorsal or P-dominant ventral streams should thus favor absolute and relative processing, respectively. We tested this by having participants judging the size of circles surrounded by larger or smaller circles resulting in the Ebbinghaus illusion. Ebbinghaus figures were displayed with visual attributes meant to bias their processing towards the M-dominant dorsal or P-dominant ventral streams. Size estimates were found to increase with actual circle size and equal sensitivity across conditions. Yet, the influence of surrounding circles was reduced for figures displayed with M-biased attributes while P-biased attributes had no effect. These results demonstrate that certain visual attributes lead objects to be processed in a more absolute manner, with significant implications for the understanding of visual perception.
- Affiliations
Citations
Geers, L., Vannuscorps, G., Pesenti, M., & Andres, M. (2023). Low-level Visual Attributes Affect the Integration of Visual Context during Size Processing. 23nd conference of the European Society for Cognitive Psychology, Porto, Portugal. https://hdl.handle.net/2078.5/267281