Contribution of color signals to ocular following responses.
Contribution of color signals to ocular following responses.
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颜色信号对眼睛跟随反应的贡献。
DOI：
10.1111/ejn.13361
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Miura K.
中科院分区：
文献类型：
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作者：
Matsuura K;Kawano K;Inaba N;Miura K.
眼跟随反应（OFR）是由视觉场景的突然运动在超短时间（< 60 ms）引起的。在这项研究中，我们研究了颜色信号在猴子OFR中的作用。为了制作生理等亮度正弦彩色光栅，我们使用OFR估计生理等亮度点，发现生理等亮度点几乎与光栅的时空频率无关。我们记录了由生理等亮度色光栅的运动引起的OFR，发现由色光栅的运动引起的OFR具有与由亮度光栅的运动引起的OFR不同的时空频率调谐。此外，OFR等亮度彩色光栅有较小的峰值响应，这表明，颜色信号弱贡献OFR相比，亮度信号。还研究了由亮度和颜色信号组成的刺激运动的OFR。我们发现，在低亮度信号下，颜色信号对OFR的贡献很大，无论颜色信号是否与亮度信号沿相同或相反的方向移动。这些结果提供了证据的多通道视觉计算运动反应的基础。我们的结论是，在日常生活中，颜色信息有助于协同亮度信息的眼睛跟踪行为的产生。
Ocular following responses (OFRs) are elicited at ultra‐short latencies (< 60 ms) by sudden movements of the visual scene. In this study, we investigated the roles of color signals in OFRs in monkeys. To make physiologically isoluminant sinusoidal color gratings, we estimated the physiologically isoluminant points using OFRs and found that the physiologically isoluminant points were nearly independent of the spatiotemporal frequency of the gratings. We recorded OFRs induced by the motion of physiologically isoluminant color gratings and found that OFRs elicited by the motion of color gratings had different spatiotemporal frequency tuning from those elicited by the motion of luminance gratings. Additionally, OFRs to isoluminant color gratings had smaller peak responses, suggesting that color signals weakly contribute to OFRs compared with luminance signals. OFRs to the motion of stimuli composed of luminance and color signals were also examined. We found that color signals largely contributed to OFRs under low luminance signals regardless of whether color signals moved in the same or opposite direction to luminance signals. These results provide evidence of the multichannel visual computations underlying motor responses. We conclude that, in everyday situations, color information contributes cooperatively with luminance information to the generation of ocular tracking behaviors.