Losier Bruno J, Klein Raymond M
Department of Psychology, St. Joseph's HealthCare Hamilton, Hamilton, Ontario, Canada.
Brain Res Cogn Brain Res. 2004 May;19(3):269-74. doi: 10.1016/j.cogbrainres.2004.01.002.
Covert orienting within peripersonal (near) and extrapersonal (far) space was investigated in a large sample of young adults. The participants made speeded responses to targets in a simple, go/no-go detection task. Stimuli, equated for eccentricity and size, were presented at two distinct distances from the observer, representing peripersonal space and extrapersonal space. Within each distance condition cues and targets were presented at the four corners of an imaginary square allowing assessment of the influence of attention upon targets presented in the upper and lower as well as left and right visual fields. In the neutral condition lower field targets had a small advantage over upper field targets. This effect was also observed under cued conditions. When presented in peripersonal space, near targets benefited more from valid cuing than did targets in the other conditions. This pattern is discussed in terms of Previc's [Behav. Brain Sci. 13 (1990) 519] model of visual field specialization.
在大量年轻成年人样本中研究了个人周边（近）空间和个人外部（远）空间内的隐蔽定向。参与者在一个简单的“是/否”检测任务中对目标做出快速反应。刺激物在与观察者的两个不同距离处呈现，其离心率和大小相等，分别代表个人周边空间和个人外部空间。在每个距离条件下，线索和目标呈现在一个假想正方形的四个角上，以便评估注意力对上下以及左右视野中呈现的目标的影响。在中性条件下，下视野目标比上视野目标有小优势。在有线索提示的条件下也观察到了这种效应。当在个人周边空间呈现时，近目标比其他条件下的目标从有效线索提示中获益更多。根据普雷维克[《行为与脑科学》13（1990）519]的视野专业化模型对这种模式进行了讨论。
