Effects of attention on a relative mislocalization with successively presented stimuli
Effects of attention on a relative mislocalization with successively presented stimuli
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DOI：
10.1016/j.visres.2010.05.036
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发表时间：
2010-08-23
期刊：
影响因子：
1.8
通讯作者：
Erlhagen, Wolfram
中科院分区：
文献类型：
--
作者：
Bocianski, Diana;Muesseler, Jochen;Erlhagen, Wolfram
先前的研究表明，在集中注意力的条件下，刺激定位在视觉周边的精确度得到了提高。本研究探讨了集中注意力是否能够纠正最近观察到的错误定位与连续呈现的刺激：当观察者被要求本地化的周边位置的一个简要介绍的目标相对于以前提出的比较刺激，他们往往会判断目标是更对中央凹比它的实际位置。在三个实验中，在集中注意力和分散注意力的条件下测试了错误定位。结果表明，错误定位增加分布式注意和消失时，刺激出现在可预测的位置一致，从而在集中注意的条件下。然而，当一个程序与一个审判的审判提示应用的错误定位只是减少，但没有完全消除。在最近开发的动态场模型组成的相互作用的兴奋性和抑制性神经元细胞群的结果被解释为注意调制的自发（基线）水平的神经活动。(C)2010爱思唯尔有限公司保留所有权利。
Previous studies yielded evidence that the precision, with which stimuli are localized in the visual periphery, is improved under conditions of focused attention. The present study examined whether focused attention is able to correct a mislocalization recently observed with successively presented stimuli: when observers are asked to localize the peripheral position of a briefly presented target with respect to a previously presented comparison stimulus, they tended to judge the target as being more towards the fovea than was its actual position. In three experiments the mislocalization was tested under conditions with focused and distributed attention. Results revealed that the mislocalization increased with distributed attention and disappeared when stimuli appeared consistently at predictable positions and thus under conditions of focused attention. However, when a procedure with a trial-by-trial cueing was applied the mislocalization was only reduced, but not wiped out completely. In a recently developed dynamic field model consisting of interacting excitatory and inhibitory neuronal cell populations the results were explained as an attentional modulation of spontaneous (baseline) levels of neural activity. (C) 2010 Elsevier Ltd. All rights reserved.