Cooperative Integration and Representation Underlying Bilateral Network of Fly Motion-Sensitive Neurons
Figure 4
Coding properties of a population of LPTCs in a bilateral network.
A: Raster plots showing locations of action potentials of all six spiking LPTCs in time for a single trial with the four different stimuli. Red plots indicate responses of spiking LPTCs in the connected case, and black plots present responses of spiking LPTCs in the disconnected case. B: Principal component analysis (PCA) for population activities shown in A. The firing rate vectors are projected onto a two-dimensional space spanned by the first and second principal components, PC1 and PC2. Colors indicate different stimuli. In the disconnected case, four clusters of the firing rate vectors corresponding to the four different stimuli are respectively separated into the four quadrants, whereas in the connected case, clusters of the firing rate vectors corresponding to the in-phase and out-of-phase stimuli are respectively distributed along the PC1 and PC2 axes. C: Contribution ratio of PC1 and PC2 (bars) and cumulative contribution ratio (dots) in the connected and disconnected cases. (meanSEM, 10 trials).