a Department of Psychology , Wayne State University , Detroit , MI , USA.
Laterality. 2014;19(2):129-45. doi: 10.1080/1357650X.2013.778274. Epub 2013 Apr 11.
A considerable literature suggests that the right hemisphere is dominant in vigilance for novel and survival-related stimuli, such as predators, across a wide range of species. In contrast to vigilance for change, change blindness is a failure to detect obvious changes in a visual scene when they are obscured by a disruption in scene presentation. We studied lateralised change detection using a series of scenes with salient changes in either the left or right visual fields. In Study 1 left visual field changes were detected more rapidly than right visual field changes, confirming a right hemisphere advantage for change detection. Increasing stimulus difficulty resulted in greater right visual field detections and left hemisphere detection was more likely when change occurred in the right visual field on a prior trial. In Study 2 an intervening distractor task disrupted the influence of prior trials. Again, faster detection speeds were observed for the left visual field changes with a shift to a right visual field advantage with increasing time-to-detection. This suggests that a right hemisphere role for vigilance, or catching attention, and a left hemisphere role for target evaluation, or maintaining attention, is present at the earliest stage of change detection.
大量文献表明，在跨多种物种的情况下，右半球在对新颖和生存相关刺激（如捕食者）的警觉方面占主导地位。与对变化的警觉相反，变化盲视是指当视觉场景的呈现受到干扰而导致明显变化时，无法检测到这些变化。我们使用一系列在左或右视野中发生显著变化的场景来研究偏侧化的变化检测。在研究 1 中，左视野的变化比右视野的变化更快被检测到，这证实了右半球在变化检测方面的优势。增加刺激难度会导致更多的右视野检测，并且在前一个试验中右视野发生变化时，左半球检测的可能性更大。在研究 2 中，一个干扰性的分心任务会干扰先前试验的影响。同样，对于左视野的变化，检测速度更快，随着检测时间的增加，检测优势会转移到右视野。这表明，在变化检测的最早阶段，右半球负责警觉（即捕捉注意力），而左半球负责目标评估（即维持注意力）。
