Donohue Kelly C, Spencer Rebecca M C
Department of Psychology, University of Massachussets, Amherst.
Neuroscience and Behavior Program, University of Massachusetts, Amherst.
J Cogn Educ Psychol. 2011 Jun 1;10(2):167-177. doi: 10.1891/1945-8959.10.2.167.
Two recent studies illustrated that cues present during encoding can enhance recall if re-presented during sleep. This suggests an academic strategy. Such effects have only been demonstrated with spatial learning and cue presentation was isolated to slow wave sleep (SWS). The goal of this study was to examine whether sounds enhance sleep-dependent consolidation of a semantic task if the sounds are re-presented continuously during sleep. Participants encoded a list of word pairs in the evening and recall was probed following an interval with overnight sleep. Participants encoded the pairs with the sound of "the ocean" from a sound machine. The first group slept with this sound; the second group slept with a different sound ("rain"); and the third group slept with no sound. Sleeping with sound had no impact on subsequent recall. Although a null result, this work provides an important test of the implications of context effects on sleep-dependent memory consolidation.
最近的两项研究表明，编码过程中出现的线索如果在睡眠期间再次呈现，能够增强记忆回忆。这提示了一种学术策略。此类效应仅在空间学习中得到证实，且线索呈现仅限于慢波睡眠（SWS）。本研究的目的是检验，如果声音在睡眠期间持续重现，是否会增强语义任务的睡眠依赖性巩固。参与者在晚上对一组单词对进行编码，并在经过一夜睡眠的间隔后进行回忆测试。参与者在一台发声器发出的“海洋”声音下对单词对进行编码。第一组在这种声音下睡眠；第二组在不同声音（“雨”）下睡眠；第三组在无声音的环境下睡眠。伴随声音睡眠对后续回忆没有影响。尽管结果为阴性，但这项研究为情境效应在睡眠依赖性记忆巩固中的影响提供了一项重要测试。
