Effects of adaptation on the temporal envelope of amplitude-modulated flickering light

Effects of adaptation on the temporal envelope of amplitude-modulated flickering light
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自适应对调幅闪烁光时间包络的影响

DOI:
10.1016/j.visres.2011.04.014
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发表时间:
2011
期刊:
影响因子:
1.8
通讯作者:
Seiji Nakagawa
Seiji Nakagawa
中科院分区:
心理学3区
文献类型:
--
作者:
Yosuke Okamoto;Seiji Nakagawa

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本研究旨在研究调幅 (AM) 闪烁光的时间包络在视觉系统中的处理方式。为此,我们测量了适应对具有高载波频率 (16 Hz) 的 AM 闪烁光的低频 (2 Hz) 包络的影响。结果表明,尽管AM闪烁光在载波频率处具有频率分量,但在与包络相对应的频率处没有频率分量,但由于适应低时间频率,对AM闪烁光的包络的敏感度降低了。这些结果表明,仅由高频(一阶)傅里叶能量组成的低频时间包络是由低频选择性通道编码的。
This study sought to investigate the way in which the temporal envelope of amplitude-modulated (AM) flickering light is processed in the visual system. To this end, we measured the effects of adaptation on a low-frequency (2 Hz) envelope of AM flickering light with a high carrier frequency (16 Hz). The results showed that sensitivity to the envelope of the AM flickering light was reduced by adaptation to the low temporal frequency, although the AM flickering light had a frequency component at the carrier frequency but not at the frequency corresponding to the envelope. These results suggest that the low-frequency temporal envelope, composed exclusively of high-frequency (first order) Fourier energy, is encoded by a low-frequency selective channel.
人类视觉系统中闪烁的两个通道
DOI: --
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