Chen Yi-Chuan, Yeh Su-Ling
Department of Psychology, National Taiwan University, Taipei, Taiwan.
Exp Brain Res. 2009 Sep;198(2-3):209-19. doi: 10.1007/s00221-009-1831-4. Epub 2009 May 15.
Repetition blindness (RB) is a visual deficit, wherein observers fail to perceive the second occurrence of a repeated item in a rapid serial visual presentation stream. Chen and Yeh (Psychon Bull Rev 15:404-408, 2008) recently observed a reduction of the RB effect when the repeated items were accompanied by two sounds. The current study further manipulated the pitch of the two sounds (same versus different) in order to examine whether this cross-modal facilitation effect is caused by the multisensory enhancement of the visual event by sound, or multisensory Gestalt (perceptual grouping) of a new representation formed by combining the visual and auditory inputs. The results showed robust facilitatory effects of sound on RB regardless of the pitch of the sounds (Experiment 1), despite an effort to further increase the difference in pitch (Experiment 2). Experiment 3 revealed a close link between participants' awareness of pitch and the effect of pitch on the RB effect. We conclude that the facilitatory effect of sound on RB results from multisensory enhancement of the perception of visual events by auditory signals.
重复盲视（RB）是一种视觉缺陷，在快速序列视觉呈现流中，观察者无法感知重复项目的第二次出现。陈和叶（《心理通报与评论》15：404 - 408，2008）最近观察到，当重复项目伴有两种声音时，重复盲视效应会减弱。当前研究进一步操控了这两种声音的音高（相同与不同），以检验这种跨模态促进效应是由声音对视觉事件的多感官增强引起的，还是由视觉和听觉输入组合形成的新表征的多感官格式塔（知觉分组）引起的。结果表明，无论声音的音高如何，声音对重复盲视都有显著的促进作用（实验1），尽管已努力进一步增大音高差异（实验2）。实验3揭示了参与者对音高的意识与音高对重复盲视效应的影响之间存在紧密联系。我们得出结论，声音对重复盲视的促进效应是由听觉信号对视觉事件感知的多感官增强导致的。
