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10 Hz flicker improves recognition memory in older people

机译:10 Hz闪烁可改善老年人的识别记忆

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Background 10 Hz electroencephalographic (EEG) alpha rhythms correlate with memory performance. Alpha and memory decline in older people. We wished to test if alpha-like EEG activity contributes to memory formation. Flicker can elicit alpha-like EEG activity. We tested if alpha-frequency flicker enhances memory in older people. Pariticpants aged 67–92 identified short words that followed 1 s of flicker at 9.0 Hz, 9.5 Hz, 10.0 Hz, 10.2 Hz, 10.5 Hz, 11.0 Hz, 11.5 Hz or 500 Hz. A few minutes later, we tested participants' recognition of the words (without flicker). Results Flicker frequencies close to 10 Hz (9.5–11.0 Hz) facilitated the identification of the test words in older participants. The same flicker frequencies increased recognition of the words more than other frequencies (9.0 Hz, 11.5 Hz and 500 Hz), irrespective of age. Conclusion The frequency-specificity of flicker's effects in our participants paralleled the power spectrum of EEG alpha in the general population. This indicates that alpha-like EEG activity may subserve memory processes. Flicker may be able to help memory problems in older people.
机译:背景10 Hz脑电图(EEG)α节律与记忆表现有关。老年人的阿尔法和记忆力下降。我们希望测试类似α的脑电图活动是否有助于记忆形成。闪烁可以引发类似alpha的EEG活动。我们测试了阿尔法频率闪烁是否可以增强老年人的记忆力。 67-92岁的偏爱者识别出短词,这些词在9.0 Hz,9.5 Hz,10.0 Hz,10.2 Hz,10.5 Hz,11.0 Hz,11.5 Hz或500 Hz闪烁1 s之后。几分钟后,我们测试了参与者对单词的识别(无闪烁)。结果闪烁频率接近10 Hz(9.5-11.0 Hz),有助于识别年龄较大的参与者中的测试单词。与年龄无关,相同的闪烁频率比其他频率(9.0 Hz,11.5 Hz和500 Hz)更能增强单词的识别能力。结论在我们的参与者中,闪烁效应的频率特异性与普通人群中EEGα的功率谱平行。这表明类似alpha的EEG活动可能有助于记忆过程。闪烁可能能够帮助老年人解决记忆问题。

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