Fowler B, Hendriks P, Porlier G
Department of Physical Education, York University, Downsview, Ontario, Canada.
Undersea Biomed Res. 1987 Nov;14(6):469-76.
Two experiments were conducted to examine the effects of 35% nitrous oxide (N2O) on rehearsal strategy while learning a list of words in a free-recall paradigm. In experiment 1, the subjects learned the list while rehearsing the words aloud. Learning was slowed and an analysis of the recorded rehearsal protocols revealed a decrease in the overall rate of rehearsal. In addition, there was a decrease in both the number of words rehearsed together and the proportion of words rehearsed from earlier serial positions in the list. In experiment 2, the subjects were required to follow a different rehearsal protocol which was identical for both N2O and the air-breathing control. They had no difficulty following this protocol, but learning was still slowed. These results demonstrate that rehearsal strategies may be modified by narcosis but can be manipulated experimentally. This is consistent with the hypothesis that strategic variables play an important role in the slowed processing model of inert gas narcosis.
进行了两项实验，以检验35%氧化亚氮（N2O）在自由回忆范式中学习单词列表时对复述策略的影响。在实验1中，受试者在大声复述单词的同时学习列表。学习速度减慢，对记录的复述协议的分析显示复述的总体速率下降。此外，一起复述的单词数量以及从列表中较早序列位置复述的单词比例均有所下降。在实验2中，要求受试者遵循一种不同的复述协议，该协议对N2O组和呼吸空气的对照组都是相同的。他们遵循该协议没有困难，但学习仍然减慢。这些结果表明，复述策略可能会受到麻醉的影响，但可以通过实验进行操控。这与以下假设一致，即策略变量在惰性气体麻醉的处理减慢模型中起重要作用。
