Satou et al. assume there is `switch-like' behavior in toad tounge snapping and predator avoidance.⇒
According to Satou et al., the optic tectum is where the decision to snap the tongue (at insects).⇒
The timing of correct pro-saccades has a bi-modal distribution. One class of pro-saccades happens very fast (express saccades), the others take a little longer.
Express saccades are thought of as reflex behavior. The reflex behind them is referred to as the 'visual grasp reflex'.
They are believed to be the result of a direct translation of a visual stimulus into a motor command.⇒
In anti-saccade conditions, the `visual grasp reflex' must be suppressed.⇒
One family of models for saccades and anti-saccades are the `accumulator models'.
These models pose that activation of saccade and saccade suppression neurons race each other. The one first to reach a threshold wins.⇒