File:Brain-circuits-underlying-visual-stability-across-eye-movements--converging-evidence-for-a-neuro-Movie1.ogv

English: Simulation results of the model dynamics in a predictive remapping experiment as illustrated in Figure 3. The top left panel shows the visual setup. The cross represents the center of gaze, the dot represents the stimulus position. The simulation shows a 20° saccade from the position of 10° toward the constantly shown stimulus at −10°. The top right panel shows the retinal input signal in the model layer Xr (on. both axes) After the stimulus latency of 50 ms, neurons in this layer start to respond to the stimulus. At time index 0 the eyes start to move (see top left panel). After the stimulus latency of 50 ms, Xr shows the gaze shift-induced movement of the stimulus response. The bottom left and bottom right panels represent the two simulated LIP populations XbPC and XbCD, respectively. The retinal input from Xr enters both maps on the vertical axis. In XbPC (bottom left panel) the visual activity is modulated by the proprioceptive eye position signal which enters the map on the horizontal axis. Thus, before saccade the response in XbPC peaks at the pre-saccadic eye position of 10°. Peri-saccadically, the activity in this map is suppressed. Post-saccadically around 110 ms after saccade onset, suppression ends in XbPC and the activity updates to represent the post-saccadic eye position of −10°. In XbCD (bottom right panel) the visual activity is modulated by the corollary discharge signal, which enters the map on the horizontal axis at the future eye position (here −10°). In contrast to XbPC, cells in XbCD respond to visual input even in the absence of the CD signal. The green circle indicate the cells which, according the classical formulation of predictive remapping, should show a predictive remapping response to the stimulus. Before saccade onset, the visual response in XbCD starts to show the effects of the rising CD signal. A remapping response is triggered by the CD signal which is centered at −10° and interacts with the input from the intermediate cells that enters XbCD diagonally along the dashed line. Thus, both signals together provide an additional input to the cells located within the green circle, exactly at the intersection of the diagonal dashed line with the center of the CD signal at −10°, just prior to saccade onset. This is the classical predictive remapping response.