Nowak L G, Munk M H, Girard P, Bullier J
Cerveau et Vision, INSERM Unité 371, Bron/Lyon, France.
Vis Neurosci. 1995 Mar-Apr;12(2):371-84. doi: 10.1017/s095252380000804x.
Latencies to small flashing spots of light were measured in different layers of areas V1 and V2 in anesthetized and paralyzed macaque monkeys. The shortest latencies were found in layers 4C alpha and 4B of area V1. Latencies in layer 4C beta were on average 20 ms longer than those in 4C alpha and 4B. The shortest latencies in area V2 were observed in the infragranular layers and they did not differ significantly from those found in the infragranular layers in V1. Similarly, latencies in the supragranular layers of V2 were not significantly different from those measured in the supragranular layers of V1. These results show that, in area V1, neurons of the magnocellular pathway are activated on average 20 ms earlier than those of the parvocellular pathway. Our data also suggest that much processing begins simultaneously in areas V1 and V2.
在麻醉和麻痹的猕猴的V1区和V2区的不同层中测量了对小闪光点的潜伏期。最短潜伏期出现在V1区的4Cα层和4B层。4Cβ层的潜伏期平均比4Cα层和4B层长20毫秒。V2区的最短潜伏期出现在颗粒下层，与V1区颗粒下层的潜伏期没有显著差异。同样，V2区颗粒上层的潜伏期与V1区颗粒上层测量的潜伏期没有显著差异。这些结果表明，在V1区，大细胞通路的神经元平均比小细胞通路的神经元早20毫秒被激活。我们的数据还表明，许多处理过程在V1区和V2区同时开始。
