Scientists Uncover Cross-Species Neural Mechanism for Early Detection of Life Motion in Visual Processing----Chinese Academy of Sciences

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background-size: auto; } </style> <div class="title_line"> <div class="title_box"><img src="../../images/P020191026341161412629.png" /><h4>Newsroom</h4></div> </div>  <div class="subMain boxcenter">  <div class="xl clearfix"> <div class="title_sub title_sub_green2 title_sub_font"><a href="../../../../" title="Home" class="CurrChnlCls">Home</a> / <a href="../../../" title="Newsroom" class="CurrChnlCls">Newsroom</a> / <a href="../../" title="Research News" class="CurrChnlCls">Research News</a> / <a href="../" title="Life Sciences" class="CurrChnlCls">Life Sciences</a></div> <div class="clear"></div>  <div class="xl_left"> <div class="xl_left_div"> <h4 class="xl_title">Scientists Uncover Cross-Species Neural Mechanism for Early Detection of Life Motion in Visual Processing</h4> <div class="xl_title2"> <p> <script language="javascript"> var str_Publisher=""; str_Publisher='CHEN Na'; if(str_Publisher !="") document.write('Editor: CHEN Na |') </script> Nov 15, 2024</p> <span id="pageview" style="display:none" > </span> <div class="xl_opt"> <a href="#" class="opt_print"></a> <div class="xl_share"> <a href="http://twitter.com/intent/tweet?source=webclient&text=Scientists Uncover Cross-Species Neural Mechanism for Early Detection of Life Motion in Visual Processing https://english.cas.cn/newsroom/research_news/life/202411/t20241121_891877.shtml" target="_blank"><img src="../../../../images/z19_share1.png" /></a> <a href="http://www.facebook.com/sharer/sharer.php?u=https://english.cas.cn/newsroom/research_news/life/202411/t20241121_891877.shtml&v=3" target="_blank"><img src="../../../../images/z19_share2.png" /></a> <a href="https://www.linkedin.com/shareArticle?mini=true&source=str&title=https://english.cas.cn/newsroom/research_news/life/202411/t20241121_891877.shtml&url=https://english.cas.cn/newsroom/research_news/life/202411/t20241121_891877.shtml" target="_blank"><img src="../../../../images/z19_share3.png" /></a> <a href="https://plus.google.com/share?url=https://english.cas.cn/newsroom/research_news/life/202411/t20241121_891877.shtml" target="_blank"><img src="../../../../images/z19_share4.png" /></a> <div data-badge-popover="left" data-badge-type="1" data-link-target="_blank" data-doi="" data-hide-no-mentions="true" class="altmetric-embed _refer_dis" style="float:right;margin:8px; "></div> </div> </div> </div> <div class="xl_content" id="xl_content"> <div class="trs_editor_view TRS_UEDITOR trs_paper_default trs_word trs_web"><p>Visual systems of both humans and animals can detect life motion from the environment at the earliest stage of visual processing, a recent joint research by scientists from the Chinese Academy of Sciences (CAS) uncovered.</p><p>Jointly led by scientists from the CAS Institute of Psychology and CAS Institute of Biophysics, the study also highlighted the critical role of the superior colliculus (SC) in the perception of biological motion (BM) signals, suggesting a cross-species mechanism for processing BM early in the visual stream.</p><p>Results of the study were published in <em>Nature Communications </em>on Nov. 7, entitled "<a href="https://doi.org/10.1038/s41467-024-53968-x" target="_self" _title="null" textvalue="Detecting biological motion signals in human and monkey superior colliculus: a subcortical-cortical pathway for biological motion perception" needdownload="false" data-needdownload="false" data-needparse="false">Detecting biological motion signals in human and monkey superior colliculus: a subcortical-cortical pathway for biological motion perception</a>".</p><p>The ability to detect the presence of living beings through their movements is fundamental to the visual system, playing a crucial role in survival behaviors such as hunting, predator avoidance, and social interaction.</p><p>In experimental studies, the point-light display —commonly used to represent BM— shows the movement trajectories of humans or animals. Most vertebrates, including humans, are highly adept at processing BM, indicating the existence of a cross-species mechanism for BM perception, potentially rooted in homologous brain architecture. </p><p>In light of this, the researchers conducted a cross-species study to explore the role of the SC in BM processing.</p><p>The SC, lying on the roof of the mammalian midbrain (with a homologous structure known as the optic tectum in non-mammalian vertebrates), receives direct input from the retina and transmits this information to higher visual processing structures.</p><p>To better understand how the SC processes BM signals at different depths, the team analyzed neural responses at various layers. They found that the selective response to BM was most pronounced in the superficial layers, decreased in the intermediate layers, and was minimal in the deeper layers.</p><p>Using high-field (3T) and ultra-high-field (7T) functional magnetic resonance imaging, the researchers recorded the neural responses of the SC to BM in both humans and macaque monkeys. Their findings revealed that the SC selectively responds to BM.</p><p>The researchers also used dynamic causal modeling to investigate the connections between the SC and other brain regions involved in BM processing. Their results revealed a functional pathway in the human brain, where BM information is transmitted from SC, through the middle temporal visual complex, to the posterior superior temporal sulcus.</p><p style="text-align: center;"><img src="./W020241121406654097391.jpg" width="557" data-uploadpic="W020241121406654097391.jpg" needdownload="true" data-needdownload="true" style="" picname alt="" oldsrc="W020241121406654097391.jpg" uploadpic="W020241121406654097391.jpg" /></p><p style="text-align: center;"><span style="color: rgb(153, 153, 153);">Figure 1. Dynamic causal modeling analysis reveals the functional connectivity pathway involved in BM perception. (Image by Dr. LU Xiqian)</span></p></div> </div> <script language="javascript"> var str_attachment=""; if(str_attachment!="") document.write('Attachment file name：') </script> <ul> </ul> </div> </div>   <div class="xl_right"> <div class="xl_right_div"> <div class="xl_box contact"> <div class="xl_title3"><h5>Contact</h5></div> <p class="editor">LIU Chen</p> <p class="eventtime"><a href="http://english.psych.cas.cn/" target="_blank">Institute of Psychology</a></p> <script language="javascript"> var str_Tel=""; str_Tel='86-10-64857633'; if(str_Tel !="") document.write('<p class="oldcolumn">Tel: '+ str_Tel +'</p>') </script> <p>E-mail: <a class="email" href="mailto:liuc@psych.ac.cn">liuc@psych.ac.cn</a></p> </div> <div class="xl_box"> <script language="javascript"> var str_attachment=""; str_attachment='https://doi.org/10.1038/s41467-024-53968-x'; if(str_attachment!="") document.write('<div class="xl_title3"><h5>Reference</h5></div>') </script> <p class="reference"><a href="https://doi.org/10.1038/s41467-024-53968-x" target="_blank">Detecting biological motion signals in human and monkey superior colliculus: a subcortical-cortical pathway for biological motion perception</a></p> </div> <div class="xl_box"> <div class="xl_title3 relatedUP"><h5>Related Articles</h5></div> <div class="xl_imgbox related"> <a href="../../../archive/research_archive/rp2017/201705/t20170516_177095.shtml"><img src="../../../archive/research_archive/rp2017/201705/W020170516344210719309.png" alt="The Experimental Scene.png"/></a> <h5><a href="../../../archive/research_archive/rp2017/201705/t20170516_177095.shtml">Scientists Discover How Monocular Deprivation of Fourier Phase Information Reshapes Sensory Ocular Dominance</a></h5> <h6>May 16, 2017</h6> <p id="ma177095">Recently, Dr. BAO Min and his team from the Institute of Psychology of the Chinese Academy of Sciences and their collaborator Dr. HE Sheng from the Institute of Biophysics tested this idea. </p> <a href="../202105/t20210511_269158.shtml"><img src="../202105/W020210511537829373851.jpg" alt="A cortico-collicular pathway for motor planning in a memory-dependent perceptual decision task.jpg"/></a> <h5><a href="../202105/t20210511_269158.shtml">Researchers Unravel Cortico-collicular Circuit Mechanism Underlying Motor Planning During Decision-making</a></h5> <h6>May 17, 2021</h6> <p id="ma269158">XU Ninglong's lab at the Institute of Neuroscience, Center for Excellence in Brain Science and Intelligence Technology of the Chinese Academy of Sciences identified a pathway from the premotor cortex to the superior colliculus (SC) that is critical during memory-guided de...</p> </div> </div> </div> </div>  </div>  </div>   <div class="foot1"> <div class="boxcenter container"> <ul class="foot_list"> <li class="foot_li1"> <h5 class="foot_list_t"><a href="//english.cas.cn/../../about_us/" ignoreapd="1">About Us</a></h5> <dl> <dd><a href="//english.cas.cn/../../about_us/introduction/" 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Scientists Uncover Cross-Species Neural Mechanism for Early Detection of Life Motion in Visual Processing----Chinese Academy of Sciences