文章基本信息

标题：Effects of Hand Proximity and Movement Direction in Spatial and Temporal Gap Discrimination
本地全文：下载
作者：Wiemers, Michael ; Fischer, Martin H.
期刊名称：Frontiers in Psychology
电子版ISSN：1664-1078
出版年度：2016
卷号：7
页码：1930-1939
DOI：10.3389/fpsyg.2016.01930
出版社：Frontiers Media
摘要：Previous research on the interplay between static manual postures and visual attention revealed enhanced visual selection near the hands (near-hand effect). During active movements there is also superior visual performance when moving towards compared to away from the stimulus (direction effect). The “modulated visual pathways” hypothesis argues that differential involvement of magno- and parvocellular visual processing streams causes the near-hand effect. The key finding supporting this hypothesis is an increase in temporal and a reduction in spatial processing in near-hand space (Gozli, West, & Pratt, 2012). Since this hypothesis has, so far, only been tested with static hand postures, we provide a conceptual replication of Gozli et al.’s result with moving hands, thus also probing the generality of the direction effect. Participants performed temporal or spatial gap discriminations while their right hand was moving below the display. In contrast to Gozli et al. (2012), temporal gap discrimination was superior at intermediate and not near hand proximity. In spatial gap discrimination, a direction effect without hand proximity effect suggests that pragmatic attentional maps overshadowed temporal/spatial processing biases for far/near-hand space.
关键词：Attention; perception and action; two visual system; Visual Perception; movement preparation