Age-related differences in the temporal dynamics of spectral power during memory encoding
Age-related differences in the temporal dynamics of spectral power during memory encoding
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DOI：
10.1371/journal.pone.0227274
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发表时间：
2020-01-16
期刊：
影响因子：
3.7
通讯作者：
Kahana, Michael J.
中科院分区：
文献类型：
--
作者：
Healey, M. Karl;Kahana, Michael J.
我们研究了年轻人（18-30岁）和老年人（60岁以上）在学习单词列表以供日后回忆时获得的脑电图记录中的振荡功率。在整个研究期间，权力以一种高度一致的方式从一个词到另一个词。在14 Hz以上，这些神经梯度几乎没有年龄差异。但是低于14 Hz的梯度可靠地区分了年龄组。记忆力最好的老年人表现出与年轻人神经活动模式的最大偏离。这些结果表明，在整个编码期间神经活动动态的年龄差异反映了认知处理的变化，可能会弥补与年龄相关的下降。
We examined oscillatory power in electroencephalographic recordings obtained while younger (18-30 years) and older (60+ years) adults studied lists of words for later recall. Power changed in a highly consistent way from word-to-word across the study period. Above 14 Hz, there were virtually no age differences in these neural gradients. But gradients below 14 Hz reliably discriminated between age groups. Older adults with the best memory performance showed the largest departures from the younger adult pattern of neural activity. These results suggest that age differences in the dynamics of neural activity across an encoding period reflect changes in cognitive processing that may compensate for age-related decline.