{"title":"多目标跟踪中绑定目标识别和定位的皮质回路","authors":"L. Nummenmaa, Lauri Oksama, E. Glerean, J. Hyönä","doi":"10.1093/cercor/bhw380","DOIUrl":null,"url":null,"abstract":"Abstract Sustained multifocal attention for moving targets requires binding object identities with their locations. The brain mechanisms of identity‐location binding during attentive tracking have remained unresolved. In 2 functional magnetic resonance imaging experiments, we measured participants’ hemodynamic activity during attentive tracking of multiple objects with equivalent (multiple‐object tracking) versus distinct (multiple identity tracking, MIT) identities. Task load was manipulated parametrically. Both tasks activated large frontoparietal circuits. MIT led to significantly increased activity in frontoparietal and temporal systems subserving object recognition and working memory. These effects were replicated when eye movements were prohibited. MIT was associated with significantly increased functional connectivity between lateral temporal and frontal and parietal regions. We propose that coordinated activity of this network subserves identity‐location binding during attentive tracking.","PeriodicalId":9825,"journal":{"name":"Cerebral Cortex (New York, NY)","volume":"25 1","pages":"162 - 172"},"PeriodicalIF":0.0000,"publicationDate":"2016-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"23","resultStr":"{\"title\":\"Cortical Circuit for Binding Object Identity and Location During Multiple-Object Tracking\",\"authors\":\"L. Nummenmaa, Lauri Oksama, E. Glerean, J. Hyönä\",\"doi\":\"10.1093/cercor/bhw380\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract Sustained multifocal attention for moving targets requires binding object identities with their locations. The brain mechanisms of identity‐location binding during attentive tracking have remained unresolved. In 2 functional magnetic resonance imaging experiments, we measured participants’ hemodynamic activity during attentive tracking of multiple objects with equivalent (multiple‐object tracking) versus distinct (multiple identity tracking, MIT) identities. Task load was manipulated parametrically. Both tasks activated large frontoparietal circuits. MIT led to significantly increased activity in frontoparietal and temporal systems subserving object recognition and working memory. These effects were replicated when eye movements were prohibited. MIT was associated with significantly increased functional connectivity between lateral temporal and frontal and parietal regions. We propose that coordinated activity of this network subserves identity‐location binding during attentive tracking.\",\"PeriodicalId\":9825,\"journal\":{\"name\":\"Cerebral Cortex (New York, NY)\",\"volume\":\"25 1\",\"pages\":\"162 - 172\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-12-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"23\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cerebral Cortex (New York, NY)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1093/cercor/bhw380\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cerebral Cortex (New York, NY)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/cercor/bhw380","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Cortical Circuit for Binding Object Identity and Location During Multiple-Object Tracking
Abstract Sustained multifocal attention for moving targets requires binding object identities with their locations. The brain mechanisms of identity‐location binding during attentive tracking have remained unresolved. In 2 functional magnetic resonance imaging experiments, we measured participants’ hemodynamic activity during attentive tracking of multiple objects with equivalent (multiple‐object tracking) versus distinct (multiple identity tracking, MIT) identities. Task load was manipulated parametrically. Both tasks activated large frontoparietal circuits. MIT led to significantly increased activity in frontoparietal and temporal systems subserving object recognition and working memory. These effects were replicated when eye movements were prohibited. MIT was associated with significantly increased functional connectivity between lateral temporal and frontal and parietal regions. We propose that coordinated activity of this network subserves identity‐location binding during attentive tracking.