Abstract
Each time we make an eye movement, positions of objects on the retina change. In order to keep track of relevant objects their positions have to be updated. The situation becomes even more complex if the object is no longer present in the world and has to be held in memory. In the present study, we used saccadic curvature to investigate the time-course of updating a memorized location across saccades. Previous studies have shown that a memorized location competes with a saccade target for selection on the oculomotor map, which leads to saccades curving away from it. In our study participants performed a sequence of two saccades while keeping a location in memory. The trajectory of the second saccade was used to measure when the memorized location was updated after the first saccade. The results showed that the memorized location was rapidly updated with the eyes curving away from its spatial coordinates within 130 ms after the first eye movement. The time-course of updating was comparable to the updating of an exogenously attended location, and depended on how well the location was memorized.
| Original language | English |
|---|---|
| Article number | 1072 |
| Pages (from-to) | 1-11 |
| Number of pages | 11 |
| Journal | Scientific Reports |
| Volume | 8 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 18 Jan 2018 |
Funding
This research was supported by an Open Area Research Grant from the Netherlands Organization for Scientific Research to Artem Belopolsky [ORA 464-15-193]. The authors are not aware of any conflicts of interest that might be perceived as affecting the objectivity of this work. We thank Jonathan van Leeuwen for his help with the time series analysis and permutation testing.
| Funders | Funder number |
|---|---|
| Netherlands Organization for Scientific Research to Artem Belopolsky | ORA 464-15-193 |