Revisiting the earliest hyperscanning study: power and functional connectivity in the alpha band may link brains far apart.

IF 2.4 3区 医学 Q3 NEUROSCIENCES
Frontiers in Human Neuroscience Pub Date : 2024-10-08 eCollection Date: 2024-01-01 DOI:10.3389/fnhum.2024.1476944
Tolga Esat Özkurt
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引用次数: 0

Abstract

This brief report revisits the earliest known hyperscanning study published in 1965, which examined simultaneous EEG recordings of identical twins separated by six meters. The original study's findings suggested that eye closure in one twin elicited alpha activity in the other, despite physical separation. Leveraging contemporary signal processing techniques, we reanalyzed the digitized data to validate their findings. Spectral analysis confirmed alpha activity in the twins' EEG signals, aligning with the original observations. Multitapering along with background noise subtraction also revealed the alpha activity in the unrelated subject, which could not be observed by visual inspection alone. Coherence analysis revealed significant alpha band synchrony between a twin and an unrelated subject, differing from the initial study's conclusions. Our findings indicate that even historical data can yield new insights when revisited with contemporary data analysis tools and highlight the potential for future large-scale studies using advanced techniques to explore nonlocal brain interactions.

重温最早的超扫描研究:α波段的功率和功能连接可能会将相距甚远的大脑联系起来。
这份简短的报告重温了 1965 年发表的已知最早的超扫描研究,该研究检查了相隔六米的同卵双胞胎的同步脑电图记录。最初的研究结果表明,尽管物理上分开,双胞胎中的一个闭眼会引起另一个的阿尔法活动。利用现代信号处理技术,我们重新分析了数字化数据,以验证他们的发现。频谱分析证实了双胞胎脑电信号中的α活动,与最初的观察结果一致。多分频和背景噪声减除也揭示了不相关受试者的阿尔法活动,而这种活动仅靠肉眼是无法观察到的。相干性分析表明,双胞胎和非相关受试者之间存在明显的阿尔法波段同步性,这与最初研究的结论不同。我们的研究结果表明,即使是历史数据,在使用现代数据分析工具重新审视时也能产生新的见解,并强调了未来使用先进技术探索非局部大脑相互作用的大规模研究的潜力。
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来源期刊
Frontiers in Human Neuroscience
Frontiers in Human Neuroscience 医学-神经科学
CiteScore
4.70
自引率
6.90%
发文量
830
审稿时长
2-4 weeks
期刊介绍: Frontiers in Human Neuroscience is a first-tier electronic journal devoted to understanding the brain mechanisms supporting cognitive and social behavior in humans, and how these mechanisms might be altered in disease states. The last 25 years have seen an explosive growth in both the methods and the theoretical constructs available to study the human brain. Advances in electrophysiological, neuroimaging, neuropsychological, psychophysical, neuropharmacological and computational approaches have provided key insights into the mechanisms of a broad range of human behaviors in both health and disease. Work in human neuroscience ranges from the cognitive domain, including areas such as memory, attention, language and perception to the social domain, with this last subject addressing topics, such as interpersonal interactions, social discourse and emotional regulation. How these processes unfold during development, mature in adulthood and often decline in aging, and how they are altered in a host of developmental, neurological and psychiatric disorders, has become increasingly amenable to human neuroscience research approaches. Work in human neuroscience has influenced many areas of inquiry ranging from social and cognitive psychology to economics, law and public policy. Accordingly, our journal will provide a forum for human research spanning all areas of human cognitive, social, developmental and translational neuroscience using any research approach.
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