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Here, we focus on the mechanisms for encoding reach targets relative to visual landmarks in humans. First, we consider the behavioral results suggesting that both of these cues influence target memory, but are then transformed\u2014at the first opportunity\u2014into egocentric commands for action. We then consider the cortical mechanisms for these behaviors. We discuss different allocentric versus egocentric mechanisms for coding of target directional selectivity in memory (inferior temporal gyrus versus superior occipital gyrus) and distinguish these mechanisms from parieto\u2010frontal activation for planning egocentric direction of actual reach movements. Then, we consider where and how the former allocentric representations of remembered reach targets are converted into the latter egocentric plans. In particular, our recent neuroimaging study suggests that four areas in the parietal and frontal cortex (right precuneus, bilateral dorsal premotor cortex, and right presupplementary area) participate in this allo\u2010to\u2010ego conversion. Finally, we provide a functional overview describing how and why egocentric and landmark\u2010centered representations are segregated early in the visual system, but then reintegrated in the parieto\u2010frontal cortex for action.<\/jats:p>","DOI":"10.1111\/nyas.14261","type":"journal-article","created":{"date-parts":[[2019,10,17]],"date-time":"2019-10-17T11:10:17Z","timestamp":1571310617000},"page":"142-155","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Allocentric representations for target memory and reaching in human cortex"],"prefix":"10.1111","volume":"1464","author":[{"given":"Ying","family":"Chen","sequence":"first","affiliation":[{"name":"Center for Neuroscience Studies Queen's University  Kingston Ontario Canada"},{"name":"Canadian Action and Perception Network (CAPnet)  Toronto Ontario Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. 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