The capacity of neural ensemble discrimination of different stimulus intensities measured by discriminant analysis. The discrimination capacity of total neurons recorded was significantly better than that of neurons recorded in either pathway alone. No difference was found between the medial and lateral pathways. (A) The temporal distribution of discrimination ratio from 1.0 s before to 1.0 s after stimulation. The "leave-one-out" method was used to calculate the discrimination ratio (see Methods). (B) Statistical comparison of the discrimination performance among the whole network, in the medial pathway only, and in the lateral pathway only. ***p < 0.001. All: all the neurons. Lateral: neurons in the lateral pathway. Medial: neurons in the medial pathway. Data are presented as means ± SEM.