Lickliter Robert, Bahrick Lorraine E, Markham Rebecca G
Infant Development Research Center, Department of Psychology, Florida International University, Miami, FL 33199, USA.
Dev Sci. 2006 Nov;9(6):604-15. doi: 10.1111/j.1467-7687.2006.00539.x.
We assessed whether exposure to amodal properties in bimodal stimulation (e.g. rhythm, rate, duration) could educate attention to amodal properties in subsequent unimodal stimulation during prenatal development. Bobwhite quail embryos were exposed to an individual bobwhite maternal call under several experimental and control conditions during the day prior to hatching. Experimental groups received redundant auditory and visual exposure to the temporal features of an individual maternal call followed by unimodal auditory exposure to the same call immediately or after a 2-hr or 4-hr delay. Control groups received (1) the same exposure but in the reverse sequence (unimodal --> redundant bimodal), (2) asynchronous bimodal --> unimodal, (3) only unimodal exposure, or (4) only bimodal exposure. All experimental groups showed a significant preference for the familiar maternal call over a novel maternal call when tested 2 days after hatching, whereas none of the control groups showed a significant preference for the familiar call. These results indicate that intersensory redundancy can direct attention to amodal properties in bimodal stimulation and educate attention to the same amodal properties in subsequent unimodal stimulation where no intersensory redundancy is available.
我们评估了在双模式刺激中接触非模态属性（如节奏、频率、持续时间）是否能在产前发育过程中引导对后续单模式刺激中的非模态属性的注意。在孵化前一天，将白喉鹌鹑胚胎在几种实验和对照条件下暴露于单个白喉鹌鹑母体叫声中。实验组在冗余的听觉和视觉上接触单个母体叫声的时间特征，然后立即或在延迟2小时或4小时后对相同叫声进行单模式听觉接触。对照组接受（1）相同的接触，但顺序相反（单模式→冗余双模式），（2）异步双模式→单模式，（3）仅单模式接触，或（4）仅双模式接触。所有实验组在孵化后2天进行测试时，对熟悉的母体叫声表现出比对新的母体叫声的显著偏好，而对照组均未对熟悉的叫声表现出显著偏好。这些结果表明，跨感觉冗余可以将注意力引导到双模式刺激中的非模态属性，并引导对后续无跨感觉冗余的单模式刺激中的相同非模态属性的注意。
