한빛사논문
- 조회3,376
Abstract
Hee-kyoung Ko1, Martina Poletti1 & Michele Rucci1-3
1Department of Psychology, Boston University, Boston, Massachusetts, USA. 2Biomedical Engineering, Boston University, Boston, Massachusetts, USA. 3Program in Neuroscience, Boston University, Boston, Massachusetts, USA. Correspondence should be addressed to M.R.
Received 28 April; accepted 14 September; published online 31 October 2010; doi:10.1038/nn.2663
The image on the retina is never stationary. Microscopic relocations of gaze, known as microsaccades, occur even during steady fixation. It has long been thought that microsaccades enable exploration of small regions in the scene in the same way saccades are normally used to scan larger regions. This hypothesis, however, has remained controversial, as it is believed that microsaccades are suppressed during fine spatial judgments. We examined the eye movements of human observers in a high-acuity visuomotor task, the threading of a needle in a computer-simulated virtual environment. Using a method for gaze-contingent display that enables accurate localization of the line of sight, we found that microsaccades precisely move the eye to nearby regions of interest and are dynamically modulated by the ongoing demands of the task. These results indicate that microsaccades are part of the oculomotor strategy by which the visual system acquires fine spatial detail.
논문정보
- Research article
- 2010년 10월 (BRIC 등록일 )
- 국외 연구진
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