Turatto Massimo, Betta Elena
University of Trento, Rovereto, Italy.
Psychon Bull Rev. 2006 Oct;13(5):928-32. doi: 10.3758/bf03194021.
The redundant signal effect (RSE) refers to the fact that human beings react more quickly to a pair of stimuli than to only one stimulus. In previous studies of the RSE in the oculomotor system, bimodal signals have been used as the goal of the saccade. In consistency with studies using manual response times (RTs), saccadic RTs have been shown to be shorter for redundant multimodal stimuli than for single unimodal stimuli. In the present experiments, we extended these findings by demonstrating an RSE in the saccadic system elicited only by unimodal visual stimuli. In addition, we found that shorter saccadic RTs were accompanied by an increased saccadic peak velocity. The present results are of relevance for neurophysiological models of saccade execution, since the boost of saccades was elicited by two visual transients (acting as a "go" signal) that were presented not at the goal of the saccade but at various other locations.
冗余信号效应（RSE）指的是人类对一对刺激的反应比对单个刺激的反应更快这一事实。在先前关于动眼系统中RSE的研究中，双峰信号被用作扫视的目标。与使用手动反应时间（RTs）的研究一致，已表明对于冗余多模态刺激，扫视反应时间比单个单模态刺激的扫视反应时间更短。在本实验中，我们通过证明仅由单模态视觉刺激引发的扫视系统中的RSE扩展了这些发现。此外，我们发现较短的扫视反应时间伴随着扫视峰值速度的增加。本研究结果与扫视执行的神经生理模型相关，因为扫视的增强是由两个视觉瞬变（充当“开始”信号）引发的，这两个视觉瞬变并非出现在扫视目标处，而是出现在其他各个位置。
