Rozman Ana, Racey Chris, Bosten Jenny M
J Opt Soc Am A Opt Image Sci Vis. 2025 May 1;42(5):B335-B345. doi: 10.1364/JOSAA.545280.
Characterization of postreceptoral chromatic mechanisms is an active challenge in color vision research. Adding to evidence from human psychophysics and primate neurophysiology, human neuroimaging using electroencephalography (EEG) in combination with steady-state visually evoked potentials (SSVEPs) has recently been used to investigate the tuning of cortical color mechanisms. We compare the performance of two SSVEP-based methods for measuring the tuning of cortical color mechanisms: an intermodulation component (IM)-based method and an oddball method. Our results support SSVEPs as an effective tool for investigating the tuning of cortical color mechanisms. The intermodulation method is efficient and provides high signal-to-noise ratios, but the oddball method can also yield clear tuning functions if multiple SSVEP harmonics are analyzed in combination.
感受器后色觉机制的特征描述是色觉研究中的一个活跃挑战。除了来自人类心理物理学和灵长类神经生理学的证据外，最近利用脑电图（EEG）结合稳态视觉诱发电位（SSVEP）的人类神经成像技术已被用于研究皮层色觉机制的调谐。我们比较了两种基于SSVEP测量皮层色觉机制调谐的方法的性能：一种基于互调成分（IM）的方法和一种奇偶数法。我们的结果支持将SSVEP作为研究皮层色觉机制调谐的有效工具。互调方法效率高且具有高信噪比，但如果结合分析多个SSVEP谐波，奇偶数法也能产生清晰的调谐函数。
