How does visuo-spatial attention modify visual information processing? Analysis of intervention processes.

本研究试图阐明两种众所周知的注意控制手段对注意干预过程的不同召唤；即通过突然的刺激变化自动捕获和自愿控制的容量分配。第一年，使用噪声刺激的RT干扰来研究自动捕获。当噪声正好出现在目标之前时，众所周知，噪声会干扰目标识别，从而增加噪声和目标刺激属于不同反应类别时的反应延迟。然而，当噪声出现在目标之前（比如2秒），干扰就会减少到几乎不存在。研究发现，一对信号棒的突然出现确实恢复了这种干扰，但这并不是由于注意力捕获，因为提示信号在噪声数字的同侧呈现时和在对侧呈现时一样有效。在第二年，计划对注意力的自愿控制进行研究。在初步的研究中，我发现了一个有趣的现象，与注意力的自主控制有关。这是对人物消失的关注。当一个字母（“/”或“/”）嵌入到一组噪声字母（“+”）中时，有出席的目标而不是无出席的目标消失。这一现象是在一个系统的实验中观察到的，该实验仍在进行中。

This research project attempted to elucidate attentional intervention processes, which are differentially summoned by two well-known attentional control means ; i. e. , automatic capturing by sudden stimulus change and voluntary controlled capacity allocation.In the first year, automatic capturing was studied using RT interference by noise stimuli. When noise is presented just before target, it is well-known that noise interferes with target identification, thus increasing response latency when noise and target stimuli belong to different response classes. However, when noise presentation precedes target well in advance (say, 2 second), interference is reduced to be almost non-existent. It was found that abrupt onset of a pair of bars really restored this interference, but this was not due to attention capture, since cue can was as effective when presented ipsilateral to the noise digit as when it was presented in contralateral field.In the second year, study of voluntary control of attention was planned. In the preliminary study, I found an interesting phenomenon related to voluntary control of attention. It was attentional facilitation of figural disapperance. When a letter ("/" or "/") was embedded in an array of noise letters ("+") , attended, rather than non-attended target disappeared. This phenomenon was observed in a systematic experiment, which is still underway.