在光学刺激的背景下,视觉信息的横向呈现期间,EEG阿尔法节奏的认知性能和半球间不对称性之间的相关性
N A Karatygin1, I I Korobeinikova2, S S Pertsov2
1P. K. Anokhin Research Institute of Normal Physiology, Moscow, Russia. nikol.karatygin@yandex.ru.
Bulletin of experimental biology and medicine
|August 11, 2023
概括
侧面光学刺激可以提高认知任务的性能,特别是对于低α-节律光谱功率 (SPα2) 的个体. 这种方法可以通过改变半球间EEG不对称性来改善大脑功能.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 生物医学工程 生物医学工程
背景情况:
- 认知任务的表现受到大脑活动和半球相互作用的影响.
- 了解外部刺激如何调节认知功能对于开发增强策略至关重要.
- 脑电图 (EEG) 的α节律及其光谱功率 (SPα2) 是大脑状态和半球主导的指标.
研究的目的:
- 为了研究10 Hz的横向光学刺激对认知任务表现的影响.
- 在受刺激的认知任务中检查EEGα节律光谱功率 (SPα2) 的变化.
- 为了确定光学刺激是否可以调节半球间不对称.
主要方法:
- 33名健康的右撇子男性进行了n-back测试,视觉信息呈现给右或左视觉半球.
- 在正常条件下和认知任务期间,在10 Hz的光学刺激被横向应用.
- 计算了EEG的10-13Hzα-节律子范围 (SPα2) 的绝对光谱功率.
主要成果:
- 在向右半球提供信息时,侧面光学刺激在SPα2低的受试者中改善了任务性能.
- 这种改善与对侧 (左) 皮层区域的SPα2增加有关.
- 观察到SPα2左侧主导的显著增加.
结论:
- 侧面光学刺激显示了提高认知任务表现的潜力.
- 这些发现表明,这种刺激可以调节EEGα2-节律的半球间不对称性.
- 这种方法可能通过影响大脑活动模式来提供一种新的认知增强方法.
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