Successive and/or simultaneous.
Gesture (considered from the point of view of semantics) is close to instantaneous and expresses an image analogically by being spatial and thus involving the order of simultaneity. Speech (or written text) is linear and segmented, distributing across a successive structure the meaning of something, which might be a relatively momentary event. Yet it is also clear that, despite the simultaneity involved in a gestural image, gesture involves a development of successive stages, and this is due to the fact that it involves movement and not just semantics. The same can be said for speech, since at some level speech is itself an embodied gesticulation. [Shaun Gallagher, How the Body Shapes the Mind, Oxford: Clarendon Press, 2005; 125]
