A functional angle on some after-effects in cortical vision
A functional angle on some after-effects in cortical vision
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DOI：
10.1098/rspb.2000.1198
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发表时间：
2000-09-07
影响因子：
4.7
通讯作者：
Spehar, B
中科院分区：
文献类型：
--
作者：
Clifford, CWG;Wenderoth, P;Spehar, B
人类和其他动物的大脑是如何对感觉信息进行编码的，这个问题对神经科学研究至关重要。视觉错觉为感知编码的机制提供了有价值的见解。自20世纪30年代以来，倾斜后效（TAE）这一错觉就得到了广泛的研究，但对这一效应的完整解释仍然难以捉摸。在这里，我们从视觉皮层适应的功能作用的角度提出了TAE的解释。所提出的模型不仅考虑了TAE的现象学，还考虑了感知倾斜的空间相互作用以及适应对运动方向和颜色感知的影响。我们讨论了该模型对理解适应和周围刺激对皮层神经元反应特性的影响的意义。
The question of how our brains and those of other animals code sensory information is of fundamental importance to neuroscience research. Visual illusions offer valuable insight into the mechanisms of perceptual coding. One such illusion, the tilt after-effect (TAE), has been studied extensively since the 1930s: yet a full explanation of the effect has remained elusive. Here, we put forward an explanation of the TAE in terms of a functional role for adaptation in the visual cortex. The proposed model accounts not only for the phenomenology of the TAE, but also for spatial interactions in perceived tilt and the effects of adaptation on the perception of direction of motion and colour. We discuss the implications of the model for understanding the effects of adaptation and surround stimulation on the response properties of cortical neurons.