Detection of a temporal salient object benefits from visual stimulus-specific adaptation in avian midbrain inhibitory nucleus  

作　　者：Jiangtao WANG Xiaoping RAO Shuman HUANG Zhizhong WANG Xiaoke NIU Minjie ZHU Songwei WANG Li SHI 

机构地区：[1]Department of Automation,Zhengzhou University School of Electrical Engineering,Zhengzhou,China [2]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,National Center for Magnetic Resonance in Wuhan,Key Laboratory of Magnetic Resonance in Biological Systems,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan,China [3]Department of Automation,Tsinghua University,Beijing,China

出　　处：《Integrative Zoology》2024年第2期288-306,共19页整合动物学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.62206253).

摘　　要：Food and predators are the most noteworthy objects for the basic survival of wild animals,and both are often deviant in both spatial and temporal domains and quickly attract an animal’s attention.Although stimulus-specific adaptation(SSA)is considered a potential neural basis of salient sound detection in the temporal domain,related research on visual SSA is limited and its relationship with temporal saliency is uncertain.The avian nucleus isthmi pars magnocellularis(Imc),which is central to midbrain selective attention network,is an ideal site to investigate the neural correlate of visual SSA and detection of a salient object in the time domain.Here,the constant order paradigm was applied to explore the visual SSA in the Imc of pigeons.The results showed that the firing rates of Imc neurons gradually decrease with repetitions of motion in the same direction,but recover when a motion in a deviant direction is presented,implying visual SSA to the direction of a moving object.Furthermore,enhanced response for an object moving in other directions that were not presented ever in the paradigm is also observed.To verify the neural mechanism underlying these phenomena,we introduced a neural computation model involving a recoverable synaptic change with a“center-surround”pattern to reproduce the visual SSA and temporal saliency for the moving object.These results suggest that the Imc produces visual SSA to motion direction,allowing temporal salient object detection,which may facilitate the detection of the sudden appearance of a predator.

关 键 词：ADAPTATION attention model PIGEON SALIENCY 

分 类 号：Q95[生物学—动物学]