Anticipation of physical causality guides eye movements
Causality is a unique feature of human perception. We present here a behavioral investigation of the influence of physical causality during visual pursuit of object collisions. Pursuit and saccadic eye movements of human subjects were recorded during ocular pursuit of two concurrently launched targe...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Bern Open Publishing
2016-02-01
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| Series: | Journal of Eye Movement Research |
| Subjects: | |
| Online Access: | https://bop.unibe.ch/JEMR/article/view/2458 |
| _version_ | 1818605866870374400 |
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| author | Kim Wende Laetitia Theunissen Marcus Missal |
| author_facet | Kim Wende Laetitia Theunissen Marcus Missal |
| author_sort | Kim Wende |
| collection | DOAJ |
| description | Causality is a unique feature of human perception. We present here a behavioral investigation of the influence of physical causality during visual pursuit of object collisions. Pursuit and saccadic eye movements of human subjects were recorded during ocular pursuit of two concurrently launched targets, one that moved according to the laws of Newtonian mechanics (the causal target) and the other one that moved in a physically implausible direction (the non-causal target). We found that anticipation of collision evoked early smooth pursuit decelerations. Saccades to non-causal targets were hypermetric and had latencies longer than saccades to causal targets. In conclusion, before and after a collision of two moving objects the oculomotor system implicitly predicts upcoming physically plausible target trajectories. |
| first_indexed | 2024-12-16T14:01:46Z |
| format | Article |
| id | doaj.art-92661679dfa3469b85f410cae289200b |
| institution | Directory Open Access Journal |
| issn | 1995-8692 |
| language | English |
| last_indexed | 2024-12-16T14:01:46Z |
| publishDate | 2016-02-01 |
| publisher | Bern Open Publishing |
| record_format | Article |
| series | Journal of Eye Movement Research |
| spelling | doaj.art-92661679dfa3469b85f410cae289200b2022-12-21T22:29:04ZengBern Open PublishingJournal of Eye Movement Research1995-86922016-02-019210.16910/jemr.9.2.1Anticipation of physical causality guides eye movementsKim Wende0Laetitia Theunissen1Marcus Missal2Université catholique de LouvainUniversité catholique de LouvainUniversité catholique de LouvainCausality is a unique feature of human perception. We present here a behavioral investigation of the influence of physical causality during visual pursuit of object collisions. Pursuit and saccadic eye movements of human subjects were recorded during ocular pursuit of two concurrently launched targets, one that moved according to the laws of Newtonian mechanics (the causal target) and the other one that moved in a physically implausible direction (the non-causal target). We found that anticipation of collision evoked early smooth pursuit decelerations. Saccades to non-causal targets were hypermetric and had latencies longer than saccades to causal targets. In conclusion, before and after a collision of two moving objects the oculomotor system implicitly predicts upcoming physically plausible target trajectories.https://bop.unibe.ch/JEMR/article/view/2458causality perceptionsaccadessmooth pursuit |
| spellingShingle | Kim Wende Laetitia Theunissen Marcus Missal Anticipation of physical causality guides eye movements Journal of Eye Movement Research causality perception saccades smooth pursuit |
| title | Anticipation of physical causality guides eye movements |
| title_full | Anticipation of physical causality guides eye movements |
| title_fullStr | Anticipation of physical causality guides eye movements |
| title_full_unstemmed | Anticipation of physical causality guides eye movements |
| title_short | Anticipation of physical causality guides eye movements |
| title_sort | anticipation of physical causality guides eye movements |
| topic | causality perception saccades smooth pursuit |
| url | https://bop.unibe.ch/JEMR/article/view/2458 |
| work_keys_str_mv | AT kimwende anticipationofphysicalcausalityguideseyemovements AT laetitiatheunissen anticipationofphysicalcausalityguideseyemovements AT marcusmissal anticipationofphysicalcausalityguideseyemovements |