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. 2022 May 16;13:844341. doi: 10.3389/fneur.2022.844341

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Copyright © 2022 Kim, Choi, Chin, Lee and Na.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The number of fixations. (A) Patients with EOAD showed more frequent fixations than NC participants. (B) Patients with EOAD and LOAD showed more frequent fixations on the perceptual space AOI than the NC participants. (C) Patients with EOAD showed more frequent fixations on the working space AOI than the LOAD and NC participants. (D) Patients with EOAD and LOAD showed a higher ratio (working/perceptual space) of fixations on the AOIs than the NC participants. AOI, area of interest; EOAD, early-onset Alzheimer's disease; LOAD, late-onset Alzheimer's disease; NC, normal control. *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001.