DeCouto Brady, Robertson Christopher T, Lewis Doug, Mann Derek T Y
Department of Kinesiology, Jacksonville University, Jacksonville, FL, 32211, USA.
Department of Psychology, Jacksonville University, Jacksonville, FL, 32211, USA.
Cogn Process. 2020 Feb;21(1):77-93. doi: 10.1007/s10339-019-00930-1. Epub 2019 Sep 6.
During interceptive motor tasks, experts demonstrate distinct visual search behavior (from novices) that is reflective of information extraction from optimal environmental cues, which subsequently aids anticipatory movements. While some forms of visual training have been employed in sport, over-speed video training is rarely applied to perceptual-cognitive sport contexts. The purpose of the present study was to determine whether over-speed video training can enhance visual information processing and augment visual behavior for a pitch-recognition task. Twelve collegiate softball players were recruited for the study. A between-subjects, repeated measures design was implemented to assess changes in participants' pitch recognition on a video-based occlusion task after one of two training interventions: (A) over-speed video training (n = 6) or (B) regular video training (n = 6). Both training interventions required individuals to view 400 videos of different pitches over the span of 10 days. The over-speed group viewed the videos at gradually increasing video speeds (+ 0.05 × each day). Performance (i.e., identifying pitch type and location), quiet-eye duration (i.e., total QE, QE-early and QE-late) and cortical activation (i.e., alpha wave activity/asymmetry; F3/F4 and P7/P8) were measured during the pitch-recognition tasks. Results showed significant performance improvements across groups, but no differences between groups. Both interventions were associated with a reduction in alpha wave activity for P8, an increase in alpha activity for F3, and a significant increase in QE-late. An increase in QE-late was associated with a decrease in P7/P8 alpha asymmetry and improvements in pitch-type recognition. Consistent with the extant literature, our results support the importance of a later QE offset for successful performance on perceptual tasks, potentially extending to perceputal-motor tasks. Although participants in the over-speed condition did not experience significantly larger improvements in performance than controls, this study highlights the association between QE and brain activity reflective of expertise.
在拦截性运动任务中,专家(与新手相比)表现出独特的视觉搜索行为,这种行为反映了从最佳环境线索中提取信息,进而有助于预期动作。虽然一些形式的视觉训练已应用于体育领域,但超速视频训练很少应用于感知认知类运动情境。本研究的目的是确定超速视频训练是否能增强视觉信息处理能力,并改善投球识别任务中的视觉行为。招募了12名大学垒球运动员参与本研究。采用组间重复测量设计,以评估在两种训练干预之一后,参与者在基于视频的遮挡任务中对投球识别的变化:(A)超速视频训练(n = 6)或(B)常规视频训练(n = 6)。两种训练干预都要求个体在10天内观看400个不同投球的视频。超速组以逐渐增加的视频速度(每天增加0.05倍)观看视频。在投球识别任务期间,测量了表现(即识别投球类型和位置)、静眼持续时间(即总静眼时间、早期静眼时间和晚期静眼时间)和皮层激活(即阿尔法波活动/不对称性;F3/F4和P7/P8)。结果显示两组的表现均有显著改善,但组间无差异。两种干预都与P8的阿尔法波活动减少、F3的阿尔法活动增加以及晚期静眼时间显著增加有关。晚期静眼时间的增加与P7/P8阿尔法不对称性的降低和投球类型识别的改善有关。与现有文献一致,我们的结果支持晚期静眼偏移对于感知任务成功表现的重要性,这可能延伸到感知运动任务。尽管超速组参与者的表现改善幅度没有比对照组显著更大,但本研究强调了静眼与反映专业技能的大脑活动之间的关联。