Objective . Orientation selectivity is one of the significant characteristics of neurons in the primary visual cortex (V1). Some neurons in extrastriate visual cortical areas also exhibit certain orientation selectivity. But it is still not well understood that how the orientation selectivity generates. Most previous studies about the orientation selectivity are based on the spike firing rate. However, the spikes are prone to be biased by the detection and sorting algorithms. Then, in this paper, the local field potential (LFP) is adopted to investigate the mechanism of orientation selectivity. Approach. We used the quadratic phase coupling (QPC), which was calculated by wavelet bicoherence, to describe the characteristics of orientation selectivity available in V1 and V4. The raw wideband neural signals were recorded by two chronically implanted multi-electrode arrays, which were placed in V1 and V4 respectively in two macaques performing a selective visual attent...

中文翻译：

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通过二次相位耦合表征猕猴在V1和V4中的方向选择性。

目标。方向选择性是初级视皮层（V1）中神经元的重要特征之一。在外视皮层区域中的一些神经元也表现出一定的方向选择性。但是仍然没有很好地理解取向选择性是如何产生的。以前有关方向选择性的大多数研究都基于尖峰发射速率。但是，尖峰易于被检测和分类算法所偏见。然后，本文采用局域电势（LFP）来研究取向选择性的机理。方法。我们使用通过小波双相干计算的二次相位耦合（QPC）来描述V1和V4中可用的方向选择性特征。