Lewkowicz D J
New York State Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314, USA.
J Exp Psychol Hum Percept Perform. 1996 Oct;22(5):1094-106. doi: 10.1037//0096-1523.22.5.1094.
Using a habituation/test procedure, the author investigated adults' and infants' perception of auditory-visual temporal synchrony. Participants were familiarized with a bouncing green disk and a sound that occurred each time the disk bounced. Then, they were given a series of asynchrony test trials where the sound occurred either before or after the disk bounced. The magnitude of the auditory-visual temporal asynchrony threshold differed markedly in adults and infants. The threshold for the detection of asynchrony created by a sound preceding a visible event was 65 ms in adults and 350 ms in infants and for the detection of asynchrony created by a sound following a visible event was 112 ms in adults and 450 ms in infants. Also, infants did not respond to asynchronies that exceeded intervals that yielded reliable discrimination. Infants' perception of auditory-visual temporal unity is guided by a synchrony and an asynchrony window, both of which become narrower in development.
作者采用习惯化/测试程序，研究了成人和婴儿对视听时间同步性的感知。参与者先熟悉一个弹跳的绿色圆盘以及每次圆盘弹跳时发出的声音。然后，他们接受一系列异步测试试验，声音在圆盘弹跳之前或之后出现。成人和婴儿的视听时间异步阈值存在显著差异。由可见事件之前的声音产生的异步检测阈值，成人是65毫秒，婴儿是350毫秒；由可见事件之后的声音产生的异步检测阈值，成人是112毫秒，婴儿是450毫秒。此外，婴儿对超过能产生可靠辨别的时间间隔的异步情况没有反应。婴儿对视听时间一致性的感知受同步和异步窗口的引导，这两个窗口在发育过程中都会变窄。
