Davoli Christopher C, Brockmole James R
Department of Psychology, University of Notre Dame, 203 Haggar Hall, Notre Dame, IN 46556, USA.
Atten Percept Psychophys. 2012 Oct;74(7):1386-90. doi: 10.3758/s13414-012-0351-7.
Recent investigations have revealed enhanced processing of information that is presented within hand space. A potential consequence of such enhancement could be that simultaneous processing of information outside of hand space is diminished, but this possibility has yet to be tested. Here, we considered the possibility that the hands can serve as a natural remedy for unwanted interference, by acting as a physical manifestation of the attentional window. Participants performed a flanker task in which they identified a central target letter in the presence of flanking letters that varied in their degrees of compatibility with the target. Participants either held their hands around the target, such that the flankers appeared outside of the hands (but in clear view), or held their hands away from the display, and thus not around any of the stimuli. Flanker interference was markedly reduced when the hands were around the target, and these effects were not attributable to visual differences across the conditions. Collectively, these results indicate that the hands effectively shield attention from visual interference.
最近的研究表明，对手空间内呈现的信息的处理能力有所增强。这种增强的一个潜在后果可能是，同时处理手空间外的信息的能力会减弱，但这种可能性尚未得到验证。在这里，我们考虑了这样一种可能性，即手可以作为一种自然的方式来消除不必要的干扰，通过作为注意力窗口的一种物理表现。参与者进行了一项侧翼任务，在该任务中，他们要在存在与目标字母兼容性程度不同的侧翼字母的情况下识别中心目标字母。参与者要么将手放在目标周围，使得侧翼字母出现在手的外侧（但在清晰视野内），要么将手远离显示屏，因此不在任何刺激物周围。当手放在目标周围时，侧翼干扰明显减少，而且这些效应并非归因于不同条件下的视觉差异。总体而言，这些结果表明，手能有效地保护注意力免受视觉干扰。
