Figure 2. Simplified examples of two remapping mechanisms.

a) An upcoming saccade to a target at 10° with a briefly presented second target at 30°. This will activate some cells with classic receptive fields at 20° even though the secondary target does not land there until after the saccade. b) Shifting field. Each cell in a salience map (shown as LIP here) is connected to all locations on the retina through interneurons. Input from an oculomotor center (FEF here) turns on subsets of the input that correspond to the default location when fixating (saccade of 0°) or the appropriately offset location when a saccade is imminent (10° here). The shifted location to be activated depends on the cell and the saccade. The cell shown with its classical receptive field at 20° will now respond to the input at 30°. c) Activation transfer. Horizontal connections link all cells on a salience map (LIP here). An upcoming saccade will open all connections of the appropriate offset, transferring any activation from cells with pre-saccadic targets to locations where those targets will fall after the saccade. These connections must be learned [30, 31]. Here the secondary target activates the cell with receptive field at 30° and this activity is transferred to the 20° cell through the active interneuron.