TY  - JOUR
A1  - Engbert, Ralf
T1  - Microsaccades keep the eyes' balance during fixation
N2  - During fixation of a stationary target, small involuntary eye movements exhibit an erratic trajectory-a random walk. Two types of these fixational eye movements are drift and microsaccades (small-amplitude saccades). We investigated fixational eye movements and binocular coordination using a statistical analysis that had previously been applied to human posture control. This random-walk analysis uncovered two different time scales in fixational eye movements and identified specific functions for microsaccades. On a short time scale, microsaccades enhanced perception by increasing fixation errors. On a long time scale, microsaccades reduced fixation errors and binocular disparity (relative to pure drift movements). Thus, our findings clarify the role of oculomotor processes during fixation
Y1  - 2004
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/15129
ER  -