Crossmodal Links between Vision and Touch in Spatial Attention: A Computational Modelling Study
Figure 4
Exemplary temporal patterns of neuron responses to a target delivered either on one side or on the other side in condition C (application of the top-down bias input = 10 to the tactile area and to the bimodal neuron in one hemisphere contralateral to the attended side). Panel (a) displays the response of neurons in the attended side to both a tactile target (dashed light green line) and a visual target (continuous dark green line) on that side. On the attended side, network responses to tactile targets are faster than those to visual targets. Panel (b) displays the response of neurons in the unattended side to a visual target on that side. In each panel, the displayed curves are the time response of the unimodal neuron on which the target stimulus is centred, the time response of the bimodal neuron, and the time response of the inhibitory neuron. The blue vertical dashed line denotes the onset time of the target stimulus, maintained throughout the rest of the simulation.
