Psychophysics of EEG alpha state discrimination
Psychophysics of EEG alpha state discrimination
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DOI：
10.1016/j.concog.2012.06.009
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发表时间：
2012-09-01
影响因子：
2.4
通讯作者：
Frederick, Jon A.
中科院分区：
文献类型：
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作者：
Frederick, Jon A.
自20世纪60年代以来，几乎所有关于神经反馈的研究都集中在训练对EEG结构的自愿控制上。相比之下，EEG状态辨别训练侧重于意识到EEG状态的主观相关性。这项研究首次成功复制了Kamiya（1962）首次报道的EEG α状态辨别。在106名参与者中记录了150秒的基线。在任务期间，低（第70百分位数）触发了提示。参与者通过按键响应指示“高”或“低”，并立即收到反馈。75%的参与者在9次会议中取得了显著的辨别力，具有显著的学习曲线效应。性能与EEG信号的物理特性显著相关，包括幅度、持续时间和绝对与相对幅度。这些结果是一致的概念化的EEG状态歧视作为一种感觉方式，虽然它也是错综复杂的自愿控制这些国家。(C)2012 Elsevier Inc. All rights reserved.
Nearly all research in neurofeedback since the 1960s has focused on training voluntary control over EEG constructs. By contrast, EEG state discrimination training focuses on awareness of subjective correlates of EEG states. This study presents the first successful replication of EEG alpha state discrimination first reported by Kamiya (1962). A 150-s baseline was recorded in 106 participants. During the task, low (70th percentile) triggered a prompt. Participants indicated "high" or "low" with a keypress response and received immediate feedback. Seventy-five percent of participants achieved significant discrimination within nine sessions, with a significant learning curve effect. Performance was significantly related to physical properties of the EEG signal, including magnitude, duration, and absolute vs. relative amplitude. These results are consistent with a conceptualization of EEG state discrimination as a sensory modality, although it is also intricately related to voluntary control of these states. (C) 2012 Elsevier Inc. All rights reserved.