Neural representation of geometry and surface properties in object and scene perception

Lowe, Matthew X., Rajsic, Jason, Gallivan, Jason P., Ferber, Susanne and Cant, Jonathan S. (2017) Neural representation of geometry and surface properties in object and scene perception. NeuroImage, 157. pp. 586-597. ISSN 1053-8119

LoweRajsicGallivanFerberCant2018.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0.

Download (580kB) | Preview
Official URL:


Multiple cortical regions are crucial for perceiving the visual world, yet the processes shaping representations in these regions are unclear. To address this issue, we must elucidate how perceptual features shape representations of the environment. Here, we explore how the weighting of different visual features affects neural representations of objects and scenes, focusing on the scene-selective parahippocampal place area (PPA), but additionally including the retrosplenial complex (RSC), occipital place area (OPA), lateral occipital (LO) area, fusiform face area (FFA) and occipital face area (OFA). Across three experiments, we examined functional magnetic resonance imaging (fMRI) activity while human observers viewed scenes and objects that varied in geometry (shape/layout) and surface properties (texture/material). Interestingly, we found equal sensitivity in the PPA for these properties within a scene, revealing that spatial-selectivity alone does not drive activation within this cortical region. We also observed sensitivity to object texture in PPA, but not to the same degree as scene texture, and representations in PPA varied when objects were placed within scenes. We conclude that PPA may process surface properties in a domain-specific manner, and that the processing of scene texture and geometry is equally-weighted in PPA and may be mediated by similar underlying neuronal mechanisms.

Item Type: Article
Uncontrolled Keywords: structure,layout, texture, visual features, Ventral visual, context,fMRI
Subjects: C800 Psychology
Department: Faculties > Health and Life Sciences > Psychology
Depositing User: Ay Okpokam
Date Deposited: 05 Dec 2019 10:13
Last Modified: 31 Jul 2021 20:22

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics