Exogenous attention differentially modulates the processing of categorical and coordinate spatial relations
Exogenous attention differentially modulates the processing of categorical and coordinate spatial relations
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DOI：
10.1016/j.actpsy.2010.04.004
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发表时间：
2010-09-01
影响因子：
1.8
通讯作者：
Michimata, Chikashi
中科院分区：
文献类型：
--
作者：
Okubo, Matia;Laeng, Bruno;Michimata, Chikashi
Carrasco和她的同事们认为，外源性注意力会减少有人注意的地方的感受野的大小（Gobell & Carrasco，2005; Yeshurun & Carrasco，1998，2000）。基于小感受野和大感受野分别更有效地加工类别空间关系和坐标空间关系的假设，我们预测外源性注意对类别空间关系的加工比坐标空间关系的加工更有利，但会干扰坐标空间关系的加工。为了验证这些假设，参与者被测试使用的注意提示范式的波斯纳（1980年）的变体。在短线索-靶刺激起始时间（100 ms，实验1，N=28）下，外源性注意对分类空间加工的促进作用大于对坐标空间加工的促进作用，并且无论线索大小，实验2（N= 24）都能重复这一结果。当坐标判断足够困难时，外源性注意干扰了坐标空间关系的加工（实验3，N= 28）。这些结果表明，外源性注意可以不同地调节类别和协调空间关系的加工。(C)2010爱思唯尔有限公司版权所有。
Carrasco and her colleagues have suggested that exogenous attention reduces the size of receptive fields at an attended location (Gobell & Carrasco, 2005; Yeshurun & Carrasco, 1998, 2000). Based on the hypothesis that categorical and coordinate spatial relations are more efficiently processed by smaller and larger receptive fields, respectively, we predicted that exogenous attention would be more beneficial to the processing of categorical spatial relations than coordinate spatial relations while it would disrupt the processing of coordinate spatial relations. To test these hypotheses, participants were tested using a variant of Posner's (1980) attentional cueing paradigm. Exogenous attention produced larger facilitative effects on categorical spatial processing than on coordinate spatial processing at a short cue-target stimulus onset asynchrony (100 ms, Experiment 1, N=28), and this result was replicated regardless of cue size in Experiment 2 (N= 24). When the coordinate judgment was sufficiently difficult, exogenous attention disrupted the processing of coordinate spatial relations (Experiment 3, N= 28). These findings indicate that exogenous attention can differentially modulate the processing of categorical and coordinate spatial relations. (C) 2010 Elsevier B.V. All rights reserved.