scholarly journals Fast Recurrent Processing Via Ventral Prefrontal Cortex is Needed by the Primate Ventral Stream for Robust Core Visual Object Recognition

2020 ◽  
Author(s):  
Kohitij Kar ◽  
James J. DiCarlo
Keyword(s):  
Prefrontal Cortex ◽  
Object Recognition ◽  
Ventral Stream ◽  
Visual Object ◽  
Visual Object Recognition ◽  
Recurrent Processing ◽  
Ventral Prefrontal Cortex

scholarly journals Fast recurrent processing via ventral prefrontal cortex is needed by the primate ventral stream for robust core visual object recognition

2020 ◽  
Author(s):  
Kohitij Kar ◽  
James J DiCarlo
Keyword(s):  
Prefrontal Cortex ◽  
Object Recognition ◽  
Late Phase ◽  
Ventral Stream ◽  
Neural Population ◽  
Visual Object ◽  
Visual Object Recognition ◽  
Neural Network Models ◽  
Recurrent Processing ◽  
Ventral Prefrontal Cortex

SummaryDistributed neural population spiking patterns in macaque inferior temporal (IT) cortex that support core visual object recognition require additional time to develop for specific (“late-solved”) images suggesting the necessity of recurrent processing in these computations. Which brain circuit motifs are most responsible for computing and transmitting these putative recurrent signals to IT? To test whether the ventral prefrontal cortex (vPFC) is a critical recurrent circuit node in this system, here we pharmacologically inactivated parts of the vPFC and simultaneously measured IT population activity, while monkeys performed object discrimination tasks. Our results show that vPFC inactivation deteriorated the quality of the late-phase (>150 ms from image onset) IT population code, along with commensurate, specific behavioral deficits for “late-solved” images. Finally, silencing vPFC caused the monkeys’ IT activity patterns and behavior to become more like those produced by feedforward artificial neural network models of the ventral stream. Together with prior work, these results argue that fast recurrent processing through the vPFC is critical to the production of behaviorally-sufficient object representations in IT.

scholarly journals Impaired Visual Object Recognition and Dorsal/Ventral Stream Interaction in Schizophrenia

2002 ◽  
Vol 59 (11) ◽  
pp. 1011 ◽  
Author(s):  
Glen M. Doniger ◽  
John J. Foxe ◽  
Micah M. Murray ◽  
Beth A. Higgins ◽  
Daniel C. Javitt
Keyword(s):  
Object Recognition ◽  
Ventral Stream ◽  
Visual Object ◽  
Visual Object Recognition

Developmental Trajectory of Visual Object Recognition Revealed by fMRI

2007 ◽  
Author(s):  
K. Suzanne Scherf ◽  
Marlene Behrmann ◽  
Kate Humphreys ◽  
Beatriz Luna
Keyword(s):  
Object Recognition ◽  
Developmental Trajectory ◽  
Visual Object ◽  
Visual Object Recognition
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