Knudsen Eric I
Department of Neurobiology, Stanford University School of Medicine, CA 94305, USA.
Nature. 2002 May 16;417(6886):322-8. doi: 10.1038/417322a.
A bird sings and you turn to look at it a process so automatic it seems simple. But is it? Our ability to localize the source of a sound relies on complex neural computations that translate auditory localization cues into representations of space. In barn owls, the visual system is important in teaching the auditory system how to translate cues. This example of instructed plasticity is highly quantifiable and demonstrates mechanisms and principles of learning that may be used widely throughout the central nervous system.
鸟儿歌唱,你会转头去看它——这一过程如此自然而然,看似简单。但真的如此吗?我们定位声音来源的能力依赖于复杂的神经计算,这些计算将听觉定位线索转化为空间表征。在仓鸮中,视觉系统在教导听觉系统如何转化线索方面起着重要作用。这种指导性可塑性的例子具有高度可量化性,并展示了可能在整个中枢神经系统中广泛应用的学习机制和原理。