Kumar Sanjay, Riddoch M Jane, Humphreys Glyn W
Department of Psychology, Oxford Brookes University, Oxford, United Kingdom.
Department of Experimental Psychology, University of Oxford, Oxford, United Kingdom.
Front Hum Neurosci. 2021 Mar 4;15:634359. doi: 10.3389/fnhum.2021.634359. eCollection 2021.
Prior work shows that the possibility of action to an object (visual affordance) facilitates attentional deployment. We sought to investigate the neural mechanisms underlying this modulation of attention by examining ERPs to target objects that were either congruently or incongruently gripped for their use in the presence of a congruently or incongruently gripped distractor. Participants responded to the presence or absence of a target object matching a preceding action word with a distractor object presented in the opposite location. Participants were faster in responding to congruently gripped targets compared to incongruently gripped targets. There was a reduced N2pc potential when the target was congruently gripped, and the distractor was incongruently gripped compared to the conditions where targets were incongruently gripped or when the distractor, as well as target, was congruently gripped. The N2pc results indicate that target selection is easier when action information is congruent with an object's use.
先前的研究表明，对物体采取行动的可能性（视觉可供性）有助于注意力的分配。我们试图通过检查对目标物体的事件相关电位（ERP）来研究这种注意力调节的神经机制，这些目标物体在存在一致或不一致握持的干扰物的情况下，其握持方式与使用方式一致或不一致。参与者对与前面动作词匹配的目标物体的出现或不出现做出反应，干扰物出现在相反的位置。与握持方式不一致的目标相比，参与者对握持方式一致的目标反应更快。当目标物体握持方式一致且干扰物握持方式不一致时，与目标物体握持方式不一致或干扰物和目标物体握持方式都一致的情况相比，N2pc电位降低。N2pc结果表明，当动作信息与物体的使用方式一致时，目标选择更容易。
