Goolkasian P, Bunt A A
Am J Psychol. 1978 Jun;91(2):251-65.
Two experiments were conducted to investigate performance with and without voluntary eye movements in a dynamic stimulus situation. Experiment I used a combined tracking and prediction task. Level of training, complexity of the signal, and visual region sampled were the variables of interest. Experiment II manipulated the same variables in only the prediction task. Thus, the amount of attention allotted to the prediction task was varied between experiments. The d' measure indicated that under peripheral vision instructions accuracy on the prediction task was the same as under foveal vision instructions provided that: (1) the level of task complexity was low, (2) the subjects were well trained, and (3) only the prediction task was performed, or in the dual task situation only visual regions near the fovea were sampled. All other combinations of the variables resulted in a lower performance scores under peripheral vision instructions. Results are interpreted within the framework of current theories of the functional visual field.
进行了两项实验，以研究在动态刺激情境下有或没有自主眼球运动时的表现。实验一使用了跟踪与预测相结合的任务。训练水平、信号复杂度和所采样的视觉区域是感兴趣的变量。实验二则仅在预测任务中操控相同的变量。因此，不同实验中分配给预测任务的注意力数量有所不同。d' 测量结果表明，在外周视觉指令下，预测任务的准确性与中央凹视觉指令下相同，条件是：（1）任务复杂度较低，（2）受试者训练有素，（3）仅执行预测任务，或者在双重任务情境中仅采样中央凹附近的视觉区域。变量的所有其他组合在外周视觉指令下都会导致较低的表现分数。研究结果在当前功能性视野理论的框架内进行了解释。
