Paper Info
Title
Oscillatory dynamics of perceptual to conceptual transformations in the ventral visual pathway
Abstract
AbstractObject recognition requires dynamic transformations of low-level visual inputs to complex semantic representations. Although this process depends on the ventral visual pathway, we lack an incremental account from low-level inputs to semantic representations and the mechanistic details of these dynamics. Here we combine computational models of vision with semantics and test the output of the incremental model against patterns of neural oscillations recorded with magnetoencephalography in humans. Representational similarity analysis showed visual information was represented in low-frequency activity throughout the ventral visual pathway, and semantic information was represented in theta activity. Furthermore, directed connectivity showed visual information travels through feedforward connections, whereas visual information is transformed into semantic representations through feedforward and feedback activity, centered on the anterior temporal lobe. Our research highlights that the complex transformations between visual and semantic information is driven by feedforward and recurrent dynamics resulting in object-specific semantics.
Year
DOI
Venue
2018
10.1162/jocn_a_01325
Periodicals
Field
DocType
Volume
Cognitive science,Computer science,Incremental build model,Cognitive psychology,Computational model,Perception,Magnetoencephalography,Semantics,Cognitive neuroscience of visual object recognition,Temporal lobe,Feed forward
Journal
30
Issue
ISSN
Citations 
11
0898-929X
0
PageRank 
References 
Authors
0.34
8
3
Name
Order
Citations
PageRank
Alex Clarke1222.93
Barry J. Devereux2255.62
Lorraine K Tyler313614.27