Attention alters spatial integration in macaque V1 in an eccentricity-dependent manner.
Attention alters spatial integration in macaque V1 in an eccentricity-dependent manner.
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注意力可以选择性地增强神经元反应并排除外部噪声，但是这些效果的神经元计算在神经元水平排除下仍然是未知的。注意力指向神经元的经典接受场中的刺激。田地确实，在代表更多外围位置的细胞中，首选长度和空间求和区域的大小减少了空间整合。外围视觉可以支持对召开的中央凹对象和目标选择的准确分析，以进行外围物体的眼动。
Attention can selectively enhance neuronal responses and exclude external noise, but the neuronal computations underlying these effects remain unknown. At the neuronal level noise exclusion might result in altered spatial integration properties. We tested this proposal by recording neuronal activity and length tuning in macaque V1 when attention was directed towards or away from stimuli presented in the neuron’s classical receptive field. For cells with central-parafoveal receptive fields, attention indeed reduced spatial integration demonstrated by a reduction in preferred length and in the size of the spatial summation area. Conversely, in cells representing more peripheral locations, attention increased spatial integration by increasing the cell’s summation area. This previously unknown dichotomy between central and peripheral vision could support accurate analysis of attended foveal objects and target selection for impending eye-movements to peripheral objects.