NEURAL ARCHITECTURES FOR ADAPTIVE-BEHAVIOR

How do animals use the same peripheral structures to generate differen t behavioral responses? Three different neuronal architectures have be en proposed to mediate this task: dedicated circuitry; distributed cir cuitry; and reorganizing circuitry. This review will critically examin e the evidence for these different architectures in invertebrate circu its, and then examine the evidence for them in more complex vertebrate circuits. The evidence suggests that these different architectures ar e unlikely to be found in pure form in most neural circuits, but are u seful for guiding the experimental analysis circuitry.