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Spatiotemporal neural dynamics of object recognition under uncertainty in humans.
- Source :
-
ELife [Elife] 2023 May 15; Vol. 12. Date of Electronic Publication: 2023 May 15. - Publication Year :
- 2023
-
Abstract
- While there is a wealth of knowledge about core object recognition-our ability to recognize clear, high-contrast object images-how the brain accomplishes object recognition tasks under increased uncertainty remains poorly understood. We investigated the spatiotemporal neural dynamics underlying object recognition under increased uncertainty by combining MEG and 7 Tesla (7T) fMRI in humans during a threshold-level object recognition task. We observed an early, parallel rise of recognition-related signals across ventral visual and frontoparietal regions that preceded the emergence of category-related information. Recognition-related signals in ventral visual regions were best explained by a two-state representational format whereby brain activity bifurcated for recognized and unrecognized images. By contrast, recognition-related signals in frontoparietal regions exhibited a reduced representational space for recognized images, yet with sharper category information. These results provide a spatiotemporally resolved view of neural activity supporting object recognition under uncertainty, revealing a pattern distinct from that underlying core object recognition.<br />Competing Interests: YW, EP, BH No competing interests declared<br /> (© 2023, Wu et al.)
Details
- Language :
- English
- ISSN :
- 2050-084X
- Volume :
- 12
- Database :
- MEDLINE
- Journal :
- ELife
- Publication Type :
- Academic Journal
- Accession number :
- 37184213
- Full Text :
- https://doi.org/10.7554/eLife.84797