Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Brain Functional Representation of Highly Occluded Object Recognition

Bao Li
ORCID logo ,
Chi Zhang
,
Long Cao
,
Panpan Chen
,
Tianyuan Liu
,
Hui Gao
,
Linyuan Wang
ORCID logo ,
Bin Yan
,
Li Tong
* ORCID logo
Version 1 : Received: 29 August 2023 / Approved: 29 August 2023 / Online: 30 August 2023 (15:28:29 CEST)

A peer-reviewed article of this Preprint also exists.

Li, B.; Zhang, C.; Cao, L.; Chen, P.; Liu, T.; Gao, H.; Wang, L.; Yan, B.; Tong, L. Brain Functional Representation of Highly Occluded Object Recognition. Brain Sci. 2023, 13, 1387. Li, B.; Zhang, C.; Cao, L.; Chen, P.; Liu, T.; Gao, H.; Wang, L.; Yan, B.; Tong, L. Brain Functional Representation of Highly Occluded Object Recognition. Brain Sci. 2023, 13, 1387.

Abstract

Recognizing highly occluded objects is believed to arises from the interaction between the brain's vision and cognition controlling areas, although supporting neuroimaging data is currently limited. To explore the neural mechanism during this activity, we conducted an occlusion object recognition experiment using functional magnetic resonance imaging (fMRI). During magnet resonance examinations, 66 subjects engaged in object recognition tasks with three different occlusion degrees. Generalized linear model (GLM) analysis showed that the activation degree of occipital lobe (inferior occipital gyrus, middle occipital gyrus, and occipital fusiform gyrus) and dorsal anterior cingulate cortex (dACC) was related to the occlusion degree of the objects. Multivariate pattern analysis (MVPA) further unearthed a considerable surge in classification precision when dACC activation was incorporated as a feature. This suggested the combined role of dACC and occipital lobe in occluded object recognition tasks. Moreover, psychophysiological interaction (PPI) analysis disclosed that functional connectivity (FC) between the dACC and the occipital lobe was enhanced with increased occlusion, highlighting the necessity of FC between these two brain regions in effectively identifying exceedingly occluded objects. In conclusion, these findings contribute to understanding the neural mechanisms of highly occluded objects recognition, augmenting our appreciation of how the brain manages incomplete visual data.

Keywords

fMRI; MVPA; PPI; dACC; occipital lobe; occluded object recognition

Subject

Biology and Life Sciences, Neuroscience and Neurology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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