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. 2019 Aug 23;13:194. doi: 10.3389/fnbeh.2019.00194

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Copyright © 2019 Flierman, Ignashchenkova, Negrello, Thier, De Zeeuw and Badura.

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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Example traces of saccades normalized to fixation with and without the glissade. All saccades aligned to the onset of a glissade. (A) Position and velocity traces of saccade (gray) and average (black) of saccades without a glissade; 59% of all saccades. (B) Example traces of saccades with glissadic overshoot (35% of all saccades); inset shows glissade onset (green arrow) and offset (blue arrow). (C) Example traces of saccades with a glissadic undershoot (6% of all saccades). Percentages were calculated from 3597 saccades from 4 monkeys (data collected with a scleral search coil). Traces were normalized to prevent the glissades from being concealed by the variability in saccade amplitude.