Maintenance of stable central eye fixation is crucial for a variety of behavioral,

electrophysiological, and neuroimaging experiments. Naïve observers in these

experiments are not typically accustomed to fixating, requiring the use of cumbersome

and costly eye-tracking or producing confounds in results. We devised a flicker display

that produced an easily detectable visual phenomenon whenever the eyes moved. A few

minutes of training using this display dramatically improved the accuracy of eye fixation

while observers performed a demanding peripheral attention cueing task. In contrast, the

same amount of training using control displays did not produce significant fixation

improvements and some observers consistently made eye movements to the attention cue,

contaminating the cueing effect. Our results indicate that (1) eye fixation can be rapidly

improved in naïve observers by providing contingent feedback about eye movements, and

(2) our simple flicker technique provides an easy and effective method for providing this

feedback.