Memory-matches evoke human gamma-responses.
Memory-matches evoke human gamma-responses.
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DOI：
10.1186/1471-2202-5-13
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发表时间：
2004-04-13
期刊：
影响因子：
2.4
通讯作者：
Maess B
中科院分区：
文献类型：
--
作者：
Herrmann CS;Lenz D;Junge S;Busch NA;Maess B
伽马频率范围内的人脑活动已被证明与许多认知功能相关，如注意力，感知和记忆访问。更具体地说，当刺激被存储在短期记忆（STM）中或与之匹配时，伽马活动被发现增强。我们测试了这一假设，即伽马活动也引起刺激匹配的长期记忆（LTM）的陈述。记录了13名受试者执行选择反应任务的EEG。视觉刺激要么是具有记忆表示的已知现实世界物体，要么是以前从未见过的新颖配置。所有刺激诱发的早期伽玛反应是最大的枕部电极。与记忆模板相匹配的项目诱发的伽马活动明显更大。因此，我们认为，伽马活动的结果从反馈到感知系统的记忆。这个假设似乎对STM和LTM都是正确的。
Human brain activity in the gamma frequency range has been shown to be a correlate of numerous cognitive functions like attention, perception and memory access. More specifically, gamma activity has been found to be enhanced when stimuli are stored in or match with short-term memory (STM). We tested the hypothesis that gamma activity is also evoked when stimuli match representations in long-term-memory (LTM). EEG was recorded from 13 subjects performing a choice reaction task. Visual stimuli were either known real-world objects with a memory representation or novel configurations never seen before. All stimuli evoked an early gamma response which was maximal over occipital electrodes. This evoked gamma activity was significantly larger for items that matched memory templates. Therefore, we argue that gamma activity results from the feedback from memory into perception systems. This assumption seems to be true for STM as well as LTM.
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影响因子：
3
作者：
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通讯作者：
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