• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of vision >Effects of central cue reliabilities on discrimination accuracy and detection speed
【24h】

Effects of central cue reliabilities on discrimination accuracy and detection speed

机译：中央提示可靠性对辨别准确度和检测速度的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Partially valid central cues have been extensively used to study the effects of spatial attention on visual performance. However, the effect of cue reliability has not been examined in great detail. We assessed the effects of cue reliability in motion discrimination and speeded detection tasks. Four random dots kinematograms (RDKs) were presented in the four visual quadrants at 10?° eccentricity. Each RDK was contained within a circular aperture of 5?° diameter. In the discrimination task, participants reported the direction of translational coherent motion. Coherent motion occurred in only one of the four apertures. Its likely location was indicated by a cue whose reliability varied across trials over 4 levels (25%, 60%, 75%, 86%). Discrimination accuracy was greater when motion stimuli were preceded by valid than invalid cues. This effect was modulated by cue reliability, the greater the cue reliability the greater the validity effect. Moreover, validity effects were also found in the 25% reliability condition, when no task relevant spatial information was provided by the cue. In the detection task, the set-up was the same, except that participants had to report the onset of expanding motion as quickly as possible, rather than motion direction. Validity and reliability effects were also found in this paradigm. We compared performance when two quadrants were cued either by a pro-cue (pointing to the location where coherent motion will have appeared) or anti-cue (pointing to locations where coherent motion will not have appeared). Anti-cues were associated with poorer performance than pro-cues. On the other hand, discrimination performance when one or two quadrants were cued, by cues which provided the same amount of spatial information, i.e. one bit, was virtually identical. We conclude that visual performance, following central cues, reflect both the utility of cued information as well as automatic processes.
机译：部分有效的中央线索被广泛地用于研究空间注意对视觉性能的影响。然而，提示可靠性的影响尚未详细检查。我们评估了提示可靠性在运动鉴别和超速检测任务中的影响。四个随机点KineMatograms（RDK）在四个视觉象限中呈现为10？°偏心。每个RDK含有5Ω°直径的圆形孔径。在歧视任务中，参与者报告了平移相干议案的方向。相干运动仅发生在四个孔中的一个。其可能的位置是由4级以上试验（25％，60％，75％，86％）的试验而变化的暗示。当运动刺激之前，歧视精度比无效提示有效。这种效果通过提示可靠性调节，提示可靠性越大，有效性效果越大。此外，在25％的可靠性条件下也发现了有效性效应，当没有任务相关的空间信息被提示提供。在检测任务中，设置相同，除了参与者必须尽快报告扩展运动的开始，而不是运动方向。在此范例中也发现了有效性和可靠性效果。当两个象限通过Pro-Cue（指向相干运动出现的位置）或抗线（指向不存在相干运动的位置）时，我们比较了两次象限（指向连贯运动的位置）。反暗示与Pro-yues的表现较差。另一方面，当一个或两个象限被提示时，通过提示提供相同数量的空间信息的歧视性能，即一位，几乎相同。我们得出结论，在中央线索之后，视觉性能反映了CUES信息的效用以及自动流程。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号