Babkoff H, Genser S, Hegge F W
Cortex. 1985 Dec;21(4):581-93. doi: 10.1016/s0010-9452(58)80006-4.
The effect of the eccentricity of parafoveal stimulation on a lexical decision task was studied using stimuli presented to the two visual hemifield. Five-letter word and nonword stimuli were presented to three parafoveal locations ranging over 1 degree angle of eccentricity. Subjects responded manually. The results of the analyses indicated that the average RT to words was approximately 48 msec. shorter than to nonwords. The average RT to a stimulus presented to the RVF was approximately 11 msec. shorter than to a stimulus presented to the LVF. As parafoveal location became more eccentric, RT to all stimuli increased by approximately 37 msec. per degree of eccentricity. A very significant interaction was found between the visual hemifield stimulated and the direction of response to the type of stimulus presented (word/nonword).
使用呈现给两个视觉半视野的刺激，研究了中央凹旁刺激的离心率对词汇判断任务的影响。向三个中央凹旁位置呈现五个字母的单词和非单词刺激，这些位置的离心率范围为1度视角。受试者进行手动反应。分析结果表明，对单词的平均反应时间比对非单词的平均反应时间短约48毫秒。呈现给右视野的刺激的平均反应时间比对呈现给左视野的刺激的平均反应时间短约11毫秒。随着中央凹旁位置的离心率增加，对所有刺激的反应时间每增加1度离心率大约增加37毫秒。在受刺激的视觉半视野与对呈现的刺激类型（单词/非单词）的反应方向之间发现了非常显著的交互作用。
