of rules, variables, and dynamic bindings using temporal synchrony. L. Shastri and V. Ajjanagadde (1993). Behavioral and Brain Sciences 16 (3) 417--494. Temporal Synchrony, Dynamic Bindings, and SHRUTI -- a representational but non-classical model of reflexive reasoning. L. Shastri (1996). Behavioral and Brain Sciences 19 (2), 331--337.