Cortical time-course of evidence accumulation during semantic processing

Our understanding of the surrounding world and communication with other people are tied to mental representations of concepts. In order for the brain to recognize an object, it must determine which concept to access based on information available from sensory inputs. In this study, we combine magnet...

Full description

Saved in:
Bibliographic Details
Published in:Communications biology 2023-12, Vol.6 (1), p.1242-1242, Article 1242
Main Authors: Ghazaryan, Gayane, van Vliet, Marijn, Lammi, Lotta, Lindh-Knuutila, Tiina, Kivisaari, Sasa, Hultén, Annika, Salmelin, Riitta
Format: Article
Language:English
Subjects:
631/378/116/2394
631/378/2649/1594
Biology
Biomedical and Life Sciences
Brain
Cognition
Humans
Information processing
Life Sciences
Machine learning
Magnetoencephalography
Medical imaging
Neuroimaging
Pattern recognition
Semantics
Temporal variations
Visual Perception - physiology
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Our understanding of the surrounding world and communication with other people are tied to mental representations of concepts. In order for the brain to recognize an object, it must determine which concept to access based on information available from sensory inputs. In this study, we combine magnetoencephalography and machine learning to investigate how concepts are represented and accessed in the brain over time. Using brain responses from a silent picture naming task, we track the dynamics of visual and semantic information processing, and show that the brain gradually accumulates information on different levels before eventually reaching a plateau. The timing of this plateau point varies across individuals and feature models, indicating notable temporal variation in visual object recognition and semantic processing. An MEG study on semantic processing of concepts in a silent picture naming task indicates that the brain gradually accumulates information before reaching a plateau.
ISSN:2399-3642
2399-3642
DOI:10.1038/s42003-023-05611-6