The name is absent

among the elementary behaviours, which were previously activated by corresponding signals
in the External Perceptions level representing reflex behaviours, will register the specified
signal in their action component directly at the Actions level.

The actuators establish the interface between BeCA and the motor system. When a
signal is created at the Actions level, the actuators send it to the motor system, executing the
motor action of the signal.

At this first construction stage we assume the existence of a default external behaviour
executed by the motor system, when no stimuli have been perceived, which could be, for
example, “stand by” or “wander”. A diagram of our BPS at the stage of reflex behaviours is
shown in Figure 7.

Figure 7. BeCA at the stage of the modelling of reflex behaviours

3.6. Modelling Reactive Behaviours

“Desiring without measure is a matter of children, not of a man”

—Democritus

Reactive animal behaviours are those behaviours that show a rigid and complete
dependence on external stimuli (Manning, 1979; McFarland, 1981). In Section 3.5 we discussed
and modelled the simplest of this type of behaviour: the reflex response. Other two types of
reactive behaviours are the taxes and fixed-action patterns, which involve more specific and
complex external stimuli and more elaborated response patterns than reflex behaviours.

Taxes or orientation responses consist in the orientation of an animal towards or away
from some external stimulus, such as light, gravity, or chemical signals. A fixed-action pattern

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