Seconcary Motor Cortex: Where 'Sensory' Meets 'Motor' in the Rodent Frontal Cortex

被引:168
作者
Barthas, Florent [1 ]
Kwan, Alex C. [1 ,2 ]
机构
[1] Yale Univ, Sch Med, Dept Psychiat, 333 Cedar St, New Haven, CT 06511 USA
[2] Yale Univ, Sch Med, Dept Neurosci, 333 Cedar St, New Haven, CT 06511 USA
关键词
MEDIAL PREFRONTAL CORTEX; PREMOTOR CORTEX; AGRANULAR CORTEX; TOPOGRAPHICAL ORGANIZATION; CORTICAL PROJECTIONS; MEDIODORSAL NUCLEUS; FIRING PATTERNS; LONG-RANGE; RAT; MOVEMENT;
D O I
10.1016/j.tins.2016.11.006
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
In rodents, the medial aspect of the secondary motor cortex (M2) is known by other names, including medial agranular cortex (AGm), medial precentral cortex (PrCm), and frontal orienting field (FOF). As a subdivision of the medial prefrontal cortex (mPFC), M2 can be defined by a distinct set of afferent and efferent connections, microstimulation responses, and lesion outcomes. However, the behavioral role of M2 remains mysterious. Here, we focus on evidence from rodent studies, highlighting recent findings of early and context-dependent choice-related activity in M2 during voluntary behavior. Based on the current understanding, we suggest that a major function for M2 is to flexibly map antecedent signals such as sensory cues to motor actions, thereby enabling adaptive choice behavior.
引用
收藏
页码:181 / 193
页数:13
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