Schofield Andrew J, Bishop Nicholas J, Allan Jill
School of Psychology, The University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom.
Acta Psychol (Amst). 2006 Mar;121(3):249-74. doi: 10.1016/j.actpsy.2005.06.005. Epub 2005 Aug 11.
Change blindness is the relative inability of normally sighted observers to detect large changes in scenes when the low-level signals associated with those changes are either masked or of extremely low magnitude. Change detection can be inhibited by saccadic eye movements, artificial saccades or blinks, and 'mud splashes'. We now show that change detection is also inhibited by whole image motion in the form of sinusoidal oscillations. The degree of disruption depends upon the frequency of oscillation, which at 3 Hz is equivalent to that produced by artificial blinks. Image motion causes the retinal image to be blurred and this is known to affect object recognition. However, our results are inconsistent with good change detection followed by a delay due to poor recognition of the changing object. Oscillatory motion can induce eye movements that potentially mask or inhibit the low-level signals related to changes in the scene, but we show that eye movements promote rather than inhibit change detection when the image is moving.
变化盲视是指正常视力的观察者在与变化相关的低水平信号被掩盖或强度极低时，相对无法察觉到场景中的大变化。扫视眼动、人工扫视或眨眼以及“泥点飞溅”会抑制变化检测。我们现在表明，正弦振荡形式的全图像运动也会抑制变化检测。干扰程度取决于振荡频率，3赫兹的振荡频率产生的干扰程度与人工眨眼产生的干扰程度相当。图像运动会使视网膜图像变得模糊，已知这会影响物体识别。然而，我们的结果与先进行良好的变化检测，随后由于对变化物体识别不佳而出现延迟的情况不一致。振荡运动可诱发眼动，这可能会掩盖或抑制与场景变化相关的低水平信号，但我们表明，当图像移动时，眼动会促进而非抑制变化检测。
