Frequency Selection for SSVEP-based Binocular Rivalry

Conference Proceedings. 2nd International IEEE EMBS Conference on Neural Engineering, 2005. Pub Date : 2005-03-16 DOI:10.1109/CNE.2005.1419696

Ruiping Wang, Xiaorong Gao, Shangkai Gao

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引用次数: 21

Abstract

Under conditions in which the visual system can not reconcile dissimilar images from the two eyes, perception typically alternates between the two images - a process known as binocular rivalry. Binocular rivalry is a useful experimental paradigm for identifying aspects of neural correlates. Two images flickered at different frequencies as the visual stimulator to left and right eyes respectively so that the response can be recovered from the steady-state visual evoked potential (SSVEP) by time-frequency analysis. SSVEP-based binocular rivalry has potential advantage of registering the alternation in physiological dominance of the two eyes. However, flickering frequency greatly affects its practical applications. This paper presents a method of frequency selection to improve the applicability of SSVEP-based binocular rivalry. Optimal frequency is selected by comparing the stability and the signal-to-noise ratio of SSVEP between different frequencies. The SSVEP-based binocular rivalry with optimal flickering frequency correlates better with the subjects' report of perceptual dominance

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基于ssvep的双目竞争频率选择

在视觉系统无法调和来自两只眼睛的不同图像的情况下，感知通常在两种图像之间交替-这一过程被称为双目竞争。双眼竞争是识别神经相关方面的一个有用的实验范式。以不同频率闪烁的两幅图像分别作为视觉刺激物刺激左右眼，通过时频分析从稳态视觉诱发电位(SSVEP)中恢复响应。基于ssvep的双眼竞争具有记录两眼生理优势交替的潜在优势。然而，闪烁频率对其实际应用影响很大。提出了一种提高基于ssvep的双目竞争的适用性的频率选择方法。通过比较SSVEP在不同频率间的稳定性和信噪比，选择最优频率。基于ssvep的最佳闪烁频率的双眼竞争与被试的知觉优势报告有较好的相关性

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Conference Proceedings. 2nd International IEEE EMBS Conference on Neural Engineering, 2005.

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