caa a22 4500 445353155 CHVBK 20180317142851.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00221-011-2581-7 doi (NATIONALLICENCE)springer-10.1007/s00221-011-2581-7 Adaptation of catch-up saccades during the initiation of smooth pursuit eye movements [Elektronische Daten] [Alexander Schütz, David Souto] Reduction of retinal speed and alignment of the line of sight are believed to be the respective primary functions of smooth pursuit and saccadic eye movements. As the eye muscles strength can change in the short-term, continuous adjustments of motor signals are required to achieve constant accuracy. While adaptation of saccade amplitude to systematic position errors has been extensively studied, we know less about the adaptive response to position errors during smooth pursuit initiation, when target motion has to be taken into account to program saccades, and when position errors at the saccade endpoint could also be corrected by increasing pursuit velocity. To study short-term adaptation (250 adaptation trials) of tracking eye movements, we introduced a position error during the first catch-up saccade made during the initiation of smooth pursuit—in a ramp-step-ramp paradigm. The target position was either shifted in the direction of the horizontally moving target (forward step), against it (backward step) or orthogonally to it (vertical step). Results indicate adaptation of catch-up saccade amplitude to back and forward steps. With vertical steps, saccades became oblique, by an inflexion of the early or late saccade trajectory. With a similar time course, post-saccadic pursuit velocity was increased in the step direction, adding further evidence that under some conditions pursuit and saccades can act synergistically to reduce position errors. Springer-Verlag, 2011 Saccade adaptation nationallicence Pursuit adaptation nationallicence Saccadic eye movements nationallicence Smooth pursuit eye movements nationallicence Catch-up saccade nationallicence Schütz Alexander Abteilung Allgemeine Psychologie, Justus-Liebig-Universität Giessen, Otto-Behaghel-Strasse 10F, 35394, Giessen, Germany aut Souto David Faculté de Psychologie et Sciences de l'Éducation, Université de Genève, Geneva, Switzerland aut Experimental Brain Research Springer-Verlag 209/4(2011-04-01), 537-549 0014-4819 209:4<537 2011 209 221 https://doi.org/10.1007/s00221-011-2581-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-011-2581-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schütz Alexander Abteilung Allgemeine Psychologie, Justus-Liebig-Universität Giessen, Otto-Behaghel-Strasse 10F, 35394, Giessen, Germany aut NATIONALLICENCE 700 1- Souto David Faculté de Psychologie et Sciences de l'Éducation, Université de Genève, Geneva, Switzerland aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 209/4(2011-04-01), 537-549 0014-4819 209:4<537 2011 209 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer