Giessener Elektronische Bibliothek

GEB - Giessener Elektronische Bibliothek

Corrective saccades influence velocity judgments and interception

Goettker, Alexander ; Brenner, Eli ; Gegenfurtner, Karl R. ; de la Malla, Cristina

Originalveröffentlichung: (2019) Scientific Reports 9:5395 doi: 10.1038/s41598-019-41857-z
Zum Volltext im pdf-Format: Dokument 1.pdf (1.611 KB)

Bitte beziehen Sie sich beim Zitieren dieses Dokumentes immer auf folgende
URN: urn:nbn:de:hebis:26-opus-149012

Sammlung: Open Access - Publikationsfonds
Universität Justus-Liebig-Universität GieĂźen
Institut: Abteilung Allgemeine Psychologie
Fachgebiet: Psychologie
DDC-Sachgruppe: Psychologie
Dokumentart: Aufsatz
Sprache: Englisch
Erstellungsjahr: 2019
Publikationsdatum: 22.10.2019
Kurzfassung auf Englisch: In daily life we often interact with moving objects in tasks that involve analyzing visual motion, like catching a ball. To do so successfully we track objects with our gaze, using a combination of smooth pursuit and saccades. Previous work has shown that the occurrence and direction of corrective saccades leads to changes in the perceived velocity of moving objects. Here we investigate whether such changes lead to equivalent biases in interception. Participants had to track moving targets with their gaze, and in separate sessions either judge the targets´ velocities or intercept them by tapping on them. We separated trials in which target movements were tracked with pure pursuit from trials in which identical target movements were tracked with a combination of pursuit and corrective saccades. Our results show that interception errors are shifted in accordance with the observed influence of corrective saccades on velocity judgments. Furthermore, while the time at which corrective saccades occurred did not affect velocity judgments, it did influence their effect in the interception task. Corrective saccades around 100 ms before the tap had a stronger effect on the endpoint error than earlier saccades. This might explain why participants made earlier corrective saccades in the interception task.
Lizenz: Lizenz-Logo  Creative Commons - Namensnennung 4.0