TY  - JOUR
AB  - When visual stimuli are presented at the onset of a saccadic eye movement they are seen compressed onto the target location of the saccade. This peri-saccadic compression is believed to result from internal feedback pathways between oculomotor and visual areas of the brain. This feedback enhances vision around the saccade target at the expense of localization ability in other regions of the visual field. Although saccades can be targeted at only one object at a time, often multiple potential targets are available in a visual scene, and the oculomotor system has to choose which target to look at. If two targets are available, preparatory activity builds-up at both target locations in oculomotor maps. Here we show that, in this situation, two foci of compression develop, independent of which of the two targets is eventually chosen for the saccade. Our results suggest that theories that use oculomotor feedback as efference copy signals for upcoming eye movements should take the possibility into account that multiple feedback signals from potential targets may occur in parallel before the execution of a saccade.
AU  - Lappe, Markus
AU  - Hamker, Fred H.
DA  - 2015-10-06
DO  - 10.3389/fnsys.2015.00135
KW  - saccade
KW  - spatial perception
KW  - decision making
KW  - efference copy
KW  - oculomotor system
LA  - eng
N1  - Frontiers in Systems Neuroscience 9 (2015) 135, 1-9
N1  - Finanziert durch den Open-Access-Publikationsfonds 2015/2016 der Westfälischen Wilhelms-Universität Münster (WWU Münster).
PY  - 2015-10-06
SN  - 1662-5137
TI  - Peri-saccadic compression to two locations in a two-target choice saccade task
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:6-58209534558
Y2  - 2024-11-22T04:31:10
ER  -