Epelboim J L, Steinman R M, Kowler E, Edwards M, Pizlo Z, Erkelens C J, Collewijn H
Department of Psychology, University of Maryland at College Park 20742-4411, USA.
Vision Res. 1995 Dec;35(23-24):3401-22. doi: 10.1016/0042-6989(95)00080-x.
Eye and head movements were recorded as unrestrained subjects tapped or only looked at nearby targets. Scanning patterns were the same in both tasks: subjects looked at each target before tapping it; visual search had similar speeds and gaze-shift accuracies. Looking, however, took longer and, unlike tapping, benefitted little from practice. Looking speeded up more than tapping when memory load was reduced: memory was more efficient during tapping.
eye movements made when only looking are different from those made when tapping. Visual search functions as a separate process, incorporated into both tasks: it can be used to improve performance when memory load is heavy.
当无约束的受试者轻敲或仅注视附近目标时，记录其眼睛和头部运动。两项任务中的扫描模式相同：受试者在轻敲每个目标之前先注视它；视觉搜索具有相似的速度和注视转移准确性。然而，注视花费的时间更长，并且与轻敲不同，很少从练习中受益。当记忆负荷降低时，注视比轻敲加速得更多：轻敲时记忆更有效。
仅注视时的眼动与轻敲时的眼动不同。视觉搜索作为一个独立的过程，融入到两项任务中：当记忆负荷较重时，它可用于提高表现。
