Fattori P, Galletti C, Battaglini P P
Cattedra di Fisiologia generale della Facoltà di Farmacia, Università di Bologna.
Boll Soc Ital Biol Sper. 1992 Nov;68(11):663-70.
Neurons of the visual system are known to have receptive fields organized in retinotopic coordinates. We wanted to test whether visual neurons existed whose receptive fields were organized in spatial coordinates. Extracellular recordings from single cells were carried out in one area of the posterior parietal cortex (area V6) of a behaving macaque monkey. Among a great majority of retinotopically organized visual cells, neurons whose visual receptive field did not shift with gaze were also found. These cells responded to the visual stimulation of the same spatial position independently of the animal's direction of gaze, that is, their receptive field was anchored to an absolute spatial location. We suggest that these neurons directly encode visual space and are involved in programming visually-guided motor actions in space.
视觉系统的神经元已知具有以视网膜拓扑坐标组织的感受野。我们想测试是否存在其感受野以空间坐标组织的视觉神经元。在一只行为猕猴的后顶叶皮质的一个区域（V6区）进行了单细胞的细胞外记录。在绝大多数以视网膜拓扑方式组织的视觉细胞中，也发现了其视觉感受野不随注视移动的神经元。这些细胞独立于动物的注视方向对相同空间位置的视觉刺激做出反应，也就是说，它们的感受野锚定在一个绝对空间位置上。我们认为这些神经元直接编码视觉空间，并参与对空间中视觉引导的运动动作进行编程。
