Microsaccadic inhibition and P300 enhancement in a visual oddball task.

Microsaccadic inhibition and P300 enhancement in a visual oddball task.
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视觉奇怪任务中的微扫视抑制和 P300 增强。

DOI:
10.1111/j.1469-8986.2009.00791.x
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发表时间:
2009
期刊:
影响因子:
3.7
通讯作者:
M. Turatto
M. Turatto
中科院分区:
心理学3区
文献类型:
--
作者:
Matteo Valsecchi;O. Dimigen;R. Kliegl;W. Sommer;M. Turatto

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最近已经证明,视觉怪异的出现会导致微扫视的长期抑制。事件相关电位 (ERP) 中 P300 分量的幅度已被证明对引发刺激的类别(目标与非目标)、其总体概率和先前的刺激序列敏感。在本研究中,我们进一步详细说明了视觉奇怪任务中长时间微扫视抑制的功能基础,表明刺激类别、刺激频率和前面的刺激序列影响微扫视率。此外,通过共同记录 ERP 和眼球运动,我们能够证明,尽管对相同的实验操作非常敏感,但 P300 的幅度和微扫视抑制相互预测的能力很弱。
It has recently been demonstrated that the presentation of visual oddballs induces a prolonged inhibition of microsaccades. The amplitude of the P300 component in event-related potentials (ERPs) has been shown to be sensitive to the category (target vs. nontarget) of the eliciting stimulus, its overall probability, and the preceding stimulus sequence. In the present study we further specify the functional underpinnings of the prolonged microsaccadic inhibition in the visual oddball task, showing that the stimulus category, the frequency of a stimulus, and the preceding stimulus sequence influence microsaccade rate. Furthermore, by co-recording ERPs and eye movements, we were able to demonstrate that, despite being largely sensitive to the same experimental manipulation, the amplitude of P300 and the microsaccadic inhibition predict each other only weakly.
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发表时间: 1994-03-01
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影响因子: --
作者:
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