Bertera J H
Schepens Eye Research Institute, MA 02114.
Spat Vis. 1992;6(2):81-8. doi: 10.1163/156856892x00154.
The interference from an irrelevant position cue was compared in a reaction-time paradigm using voice and manual responses. The subjects were required to say 'left' or 'right' or to press left or right keys in response to arrow directions, and the arrows were presented at left or right side display positions irrelevant to the task. Display position significantly increased latency when it did not match the response to the relevant direction cue for both spatial (key-press) and non-spatial (voice) responses (73 and 59 ms, respectively). When presented alone, the position cue was processed faster than the direction cue for both manual and verbal responses. Results are discussed in terms of a common abstract mediator for left-right responses between modes and the processing speed difference between the relevant and irrelevant cue. The irrelevant left-right position code may occupy some limited-capacity channel ahead of the left-right code derived from processing the relevant direction cue.
在一个反应时范式中，使用语音和手动反应比较了来自无关位置线索的干扰。要求受试者根据箭头方向说“左”或“右”，或者按下左或右键，箭头呈现在与任务无关的左侧或右侧显示位置。当显示位置与空间（按键）和非空间（语音）反应的相关方向线索的反应不匹配时，显示位置显著增加了反应潜伏期（分别为73毫秒和59毫秒）。单独呈现时，对于手动和言语反应，位置线索的处理速度都比方向线索快。根据模式之间左右反应的共同抽象中介以及相关和无关线索之间的处理速度差异来讨论结果。无关的左右位置编码可能在处理相关方向线索得出的左右编码之前占据一些有限容量的通道。
