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首页> 外文期刊>Neuron >Orientation preference patterns in mammalian visual cortex: a wire length minimization approach.
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Orientation preference patterns in mammalian visual cortex: a wire length minimization approach.

机译:哺乳动物视觉皮层中的取向偏好模式:线长最小化方法。

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摘要

In the visual cortex of many mammals, orientation preference changes smoothly along the cortical surface, with the exception of singularities such as pinwheels and fractures. The reason for the existence of these singularities has remained elusive, suggesting that they are developmental artifacts. We show that singularities reduce the length of intracortical neuronal connections for some connection rules. Therefore, pinwheels and fractures could be evolutionary adaptations keeping cortical volume to a minimum. Wire length minimization approach suggests that interspecies differences in orientation preference maps reflect differences in intracortical neuronal circuits, thus leading to experimentally testable predictions. We discuss application of our model to direction preference maps.
机译:在许多哺乳动物的视觉皮层中,方向性偏好沿着皮层表面平滑变化,除了诸如风车和骨折之类的奇异之处。这些奇异性存在的原因仍然难以捉摸,表明它们是发育产物。我们表明,对于某些连接规则,奇异点减少了皮质内神经元连接的长度。因此,风车和骨折可能是进化的适应,使皮质的体积最小。线长最小化方法表明,取向偏好图中的种间差异反映了皮层内神经元回路的差异,因此导致了可实验验证的预测。我们讨论了模型在方向偏好图上的应用。

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