Probing the Uncanny Valley with the Eye Size Aftereffect
Probing the Uncanny Valley with the Eye Size Aftereffect
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DOI：
10.1162/pres.18.5.321
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发表时间：
2009-10
期刊：
影响因子：
--
通讯作者：
J. Seyama;R. S. Nagayama
中科院分区：
文献类型：
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作者：
J. Seyama;R. S. Nagayama
具有异常视觉特征的自然人脸会产生不舒服的印象，但人造人脸（例如，机器人面部）不一定这样做。这是一个被称为恐怖谷的现象的例子。我们假设，这种现象表明，自然和人造面孔是由不同的知觉机制，或他们是由共同的机制不同的加工。我们测试了这些假设，使用面部后效，长时间观察适应脸与放大的眼睛引起的偏见，低估眼睛大小的测试脸。结果表明，对自然刺激的适应引起了对自然刺激和人工测试刺激的后效。这表明这两种类型的面孔参与了共同的感知机制。对人工刺激的适应也引起了对自然测试刺激的后效。然而，与自然刺激（60 s）相比，人工刺激需要更长的适应期（120 s）来诱导后效，这表明人类视觉系统对人造面部的处理可能是低效的。恐怖谷可以反映人工面部被处理自然面部和人工面部所共有的感知机制低效地处理。
Natural human faces with abnormal visual features produce uncomfortable impressions, but artificial faces (e.g., robotic faces) do not necessarily do so. This is an example of the phenomenon called the uncanny valley. We hypothesized that this phenomenon indicates that natural and artificial faces are processed by different perceptual mechanisms, or they are processed differently by common mechanisms. We tested these hypotheses using a facial aftereffect where prolonged observation of adaptation faces with enlarged eyes induced a bias to underestimate the eye size of test faces. The results showed that adaptation to natural stimuli induced the aftereffect for both natural and artificial test stimuli. This suggests that the two types of faces engage common perceptual mechanisms. Adaptation to artificial stimuli also induced the aftereffect for natural test stimuli. However, artificial stimuli required a longer adaptation period (120 s) for the aftereffect to be induced compared to natural stimuli (60 s), suggesting that the processing of artificial faces by the human visual system may be inefficient. The uncanny valley may reflect that artificial faces are processed inefficiently by perceptual mechanisms that are common for processing natural and artificial faces.