Testing quasi-visual neurons in the monkey's frontal eye field with the triple-step paradigm.

To look successively at sites where several spots of light have appeared in the dark, we cannot simply rely on the image left by these targets on our retina. Our brain has to update target coordinates by taking into account each gaze movement that has taken place. A particular type of brain cell--the quasi-visual (QV) neuron--is assumed to play an important role in this updating by combining target coordinates and eye displacement signals.