Event-Related Synchronization/Desynchronization in Neural Oscillatory Changes Caused by Implicit Biases of Spatial Frequency in Electroencephalography
Event-Related Synchronization/Desynchronization in Neural Oscillatory Changes Caused by Implicit Biases of Spatial Frequency in Electroencephalography
复制标题
脑电图中空间频率隐性偏差引起的神经振荡变化中与事件相关的同步/去同步
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
A. Ishikawa
中科院分区：
文献类型：
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作者：
Kazuo Kato;H. Kadokura;T. Kuroki;A. Ishikawa
空间频率可能会引起人类特有的精神和神经活动，表现出1/f波动。然而，只有空间频率信息的视觉模式不一定会显式地影响任何反应，但可能会隐式地影响。我们采用内隐联想测验（IAT）来回答这个问题，该测验在内隐偏见的研究中得到了广泛的应用。与此同时，我们尝试用脑电图（EEG）来表征与内隐空间频率偏差相关的神经活动。我们使用两种类型的格子图案的刺激，高和低密度，作为目标。高密度和低密度对应于高空间频率和低空间频率。有两个评价类别，与相关的名词和形容词进行了一系列的积极和消极的意义。记录EEG数据，并基于目标之间每个强和弱关联强度比较的θ（4-7 Hz）、α（8-13 Hz）、低β（13-20 Hz）、高β（20-30 Hz）和γ（30-80 Hz）频带的试验间方差分析每个事件的事件相关同步（ERS）或去同步化（ERD）。类别（例如，高空间频率-阳性或低空间频率-阴性）。ERS的特点不同之间的强和弱的关联强度，在中央地区测量在400-500毫秒左右。这种差异表明，空间频率特性影响神经振荡活动与隐式偏差的空间频率。
Spatial frequency may elicit characteristic mental and neural activity in humans, exhibiting a 1/f fluctuation. However, a visual pattern with only spatial frequency information will not necessarily explicitly affect any reaction, but may do so implicitly. We adopted an implicit association test (IAT), which is widely used in the research of implicit biases, to answer that question. At the same time, we attempted to characterize the neural activities associated with implicit spatial frequency biases by using electroencephalography (EEG). We used two types of checkered-pattern stimuli, high and low density, as targets. The high and low densities correspond to high and low spatial frequencies. There were two evaluative categories, with associated nouns and adjectives carrying a range of positive and negative meanings. EEG data were recorded, and the event-related synchronization (ERS) or desynchronization (ERD) for each event was analyzed based on the intertrial variances for the theta (4–7 Hz), alpha (8–13 Hz), low beta (13–20 Hz), high beta (20–30 Hz), and gamma (30–80 Hz) bands for each strong and weak associative strength comparison between targets. The category (e.g., high spatial frequency–positive or low spatial frequency–negative) was then obtained from the reaction times of the IAT for each subject. The ERS characteristics differed between strong and weak associative strengths, measured at the central areas at around 400–500 ms. This difference suggests that spatial frequency characteristics affect neural oscillatory activity associated with implicit biases of spatial frequency.
影响因子：
7.6
作者：
Greenwald, AG;Nosek, BA;Banaji, MR
通讯作者：
Banaji, MR