Fast Recurrent Processing via Ventrolateral Prefrontal Cortex Is Needed by the Primate Ventral Stream for Robust Core Visual Object Recognition

被引：72

作者：

Kar, Kohitij ^{[1
,2
,3
]}

DiCarlo, James J. ^{[1
,2
,3
]}

机构：

[1] MIT, McGovern Inst Brain Res, Cambridge, MA 01239 USA

[2] MIT, Dept Brain & Cognit Sci, Cambridge, MA 01239 USA

[3] MIT, Ctr Brains Minds & Machines, Cambridge, MA 01239 USA

来源：

NEURON | 2021年 / 109卷 / 01期

关键词：

CORTICAL CONNECTIONS; NEURONAL RESPONSES; STRIATE CORTEX; SINGLE NEURONS; MONKEY; REPRESENTATION; MODELS; SPACE; TE;

D O I：

10.1016/j.neuron.2020.09.035

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Distributed neural population spiking patterns in macaque inferior temporal (IT) cortex that support core object recognition require additional time to develop for specific, "late-solved" images. This suggests the necessity of recurrent processing in these computations. Which brain circuits are responsible for computing and transmitting these putative recurrent signals to IT? To test whether the ventrolateral prefrontal cortex (vIPFC) is a critical recurrent node in this system, here, we pharmacologically inactivated parts of vIPFC and simultaneously measured IT activity while monkeys performed object discrimination tasks. vIPFC inactivation deteriorated the quality of late-phase (>150 ms from image onset) IT population code and produced commensurate behavioral deficits for late-solved images. Finally, silencing vIPFC caused the monkeys' IT activity and behavior to become more like those produced by feedforward-only ventral stream models. Together with prior work, these results implicate fast recurrent processing through vIPFC as critical to producing behaviorally sufficient object representations in IT.

引用

页码：164 / 176.e5

页数：19

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