期刊论文详细信息
eLife
Robust vestibular self-motion signals in macaque posterior cingulate region
Yong Gu1  Bingyu Liu1  Qingyang Tian1 
[1] CAS Center for Excellence in Brain Science and Intelligence Technology, Key Laboratory of Primate Neurobiology, Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China;University of Chinese Academy of Sciences, Beijing, China;
关键词: self-motion;    vestibular;    optic flow;    cingulate cortex;    multisensory;    heading;    Rhesus macaque;   
DOI  :  10.7554/eLife.64569
来源: eLife Sciences Publications, Ltd
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【 摘 要 】

Self-motion signals, distributed ubiquitously across parietal-temporal lobes, propagate to limbic hippocampal system for vector-based navigation via hubs including posterior cingulate cortex (PCC) and retrosplenial cortex (RSC). Although numerous studies have indicated posterior cingulate areas are involved in spatial tasks, it is unclear how their neurons represent self-motion signals. Providing translation and rotation stimuli to macaques on a 6-degree-of-freedom motion platform, we discovered robust vestibular responses in PCC. A combined three-dimensional spatiotemporal model captured data well and revealed multiple temporal components including velocity, acceleration, jerk, and position. Compared to PCC, RSC contained moderate vestibular temporal modulations and lacked significant spatial tuning. Visual self-motion signals were much weaker in both regions compared to the vestibular signals. We conclude that macaque posterior cingulate region carries vestibular-dominant self-motion signals with plentiful temporal components that could be useful for path integration.

【 授权许可】

CC BY   

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